Taxonomic remarks.-This species was listed by d'Orbigny in 1826, with no illustration or description; it is validated by the author's reference to the non-Linneian work of Soldani (1791). No holotype was designated by d'Orbigny, and no lectotype has been selected prior to this paper. The specimens available as syntypes theoretically include all those so labelled or otherwise identified by d'Orbigny during or prior to 1826, as well as the specimens of Soldani which were referred to by d'Orbigny (Soldani, 1791, pI. 123, figs. H, I, 0, and P), which specimens must have been included by d'Orbigny in his concept of the species at the time of the first publication (R. V. Melville, verb.). This species was designated as the type species of the genus Globigerina d'Orbigny 1826 by Parker, Jones and Brady (1865, p. 36) . G. bulloides was sub- sequently referred to the genus Pylodexia by Ehren- berg (1872), p. 276), but that genus was subsequent to Globigerina, being erected by Ehrenberg in 1858, and has not yet been validated (Cushman's designa- tion in 1927 of the species Pylodexia? tetratrias Ehren- berg 1858 as type species of Pylodexia being invali- dated by Art. 30, para. II, subpara. e (y) of the Inter- national Rules of Taxonomy). The species name G. bulloides has been used extensively by zoologists and palaeontologists, and opinions as to its application have varied almost equally widely; it is consequently impossible to attempt a full synonymy here, Although d'Orbigny (1826) published no illustration of the species, he issued to private subscribers two models in plaster; according to Heron-Allen (1917, pp. 14-15), the models numbered 1 to 25 were issued in 1823, and the remainder were issued in further instalments during that year. Model No. 17 was referred by d'Orbigny (1826) to a young individual of Globigerina bulloides, and Model No. 76 (in the fourth instalment) to an adult of that species. Only the latter is closely comparable with either the lectotype -of the species here designated, or to any of the illustrations given by Soldani (1791), and referred to by d'Orbigny. Of the Soldani figures quoted by d'Orbigny, pI. 123, fig. I may be of a broken test, fig. H is bilocular and not conspecific, and fig. P is unrecognisable; only that specimen represented by fig. 0 is recognisably the same species as that modelled by d'Orbigny and now present in his collection. As the models were not available to the general public except on private and limited subscription they have no status in taxonomy, but should be used to understand d'Orbigny's concept of the species. We have attempted to do this in our selection of lectotype. Cuvier (1834, 1837) published two drawings of G. bulloides (dorsal and side views only) which are so like d'Orbigny's model no. 76 that there can be little doubt that they were actually copied from this model. D'Orbigny's first illustrations of G. bulloides (1839) showed two recent specimens, and the first (op. cit., pI. 2, figs. 1,2 and 3) showed the three standard views of a specimen, from the recent seas near the Canaries, which is probably conspecific with our lectotype (the other specimen (pI. 2, fig. 28) is not specifically determinable). Unfortunately, Ellis and Messina (1940 et seq.) omitted the umbilical view of the first specimen, i. e., pl. 2, fig. 2.

D'Orbigny (1826) stated that he obtained his specimens of G. bulloides from the Adriatic Sea, close to Rimini. Two tubes of specimens, remounted from d'Orbigny's material by Terquem at an unknown date, and bearing the inscription G. bulloides, in Terquem's handwriting, are extant in the Museum Nat. de I'Hist. Naturelle. One of these two tubes bears the original d'Orbigny label on the back of its mount but with no mention of locality of origin: the tube is now empty, and is marked "Type isolé"". The single specimen which this tube apparently contained has obviously been removed, presumably by Dr. A. R. Loeblich during his visit to Europe in 1953 and 1954. The handwriting of the words ""Type isolé"" seems to correspond to that on other slides whIch are known to have been marked by Dr. Loeblich. Unfortunately, the present workers in Paris (MM. Marie, Sornay and Lys) were unable to thow any light on the whereabouts of this specimen, and following a diligent search by ali concerned, it must now be considered lost. We have written to Dr. Loeblich regarding this matter, but have received no reply. Since Dr. Loeblich has not yet published any information on this specimen, and as this species is of great importance in the understanding of the genus Globigerina and supra-generic taxa based upon it, we have isolated as lectotype (here figured, pI. 1, fig. 1) a further syntypic specimen from the second tube. The tube of origin of the lectotype was labelled ""Subappenin, Rimini"" on the obverse of the mount, and the number 12309 on the reverse.

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