On Neogene Echinoids from the Island of Anguilla. 587 
Fry has pointed out, the sacral diapophyses (which in Pelo- 
batide are supposedly “strongly dilated”?) may be hardly 
dilated at all—for example, in Batrachopsis it is not more 
developed than in Heleioporus of the Cystignathide, and 
certainly less so than in any of the Bufonid genera. The 
urostyle may be ankylosed with the sacrum, monocondylous 
or dicondylous as in the Bufonids. In fact, there is not a 
character in which the range of variation given for Pelobatidze 
will not cover Bufonide also. It is impossible to draw a line 
between the two, now that the generic relationships and 
sequences are made clear and that there is no longer the gap 
which formerly separated them, and which is now so amply 
filled by Cophophryne and Ophryophryne. 
BIBLIOGRAPHY. 
AnpErRsoN. Proc. Zool. Soc. 1871, p. 204. 
Buiyrz. Journ. As. Soc. Bengal, 1854, xxiii. p. 300. 
Bovutencer. Ann. & Mag. Nat. Hist. 1887, ser. 5, xx. p. 405; ibid. 
1888, ser. 6, i. p. 188; ibid. 1903, ser. 7, xii. p. 186. 
—. Faun. Brit. Ind. 1890, p. 508. 
—. Ree. Ind. Mus. 1919, xvi. p. 479. 
Fry. Proc. Roy. Soc. Queensland, 1915, xxvii. p. 74. 
Gapow. Cambridge Nat. Hist. 1909, vol. viii. p. 167. 
GintTHerR. Ann. Mus. Zool. St. Pétersh. 1896, i. p. 208. 
THEOBALD. Cat. Rept. As. Soc. Bengal, 1854, xxiii. p. 300. 
LX X.—Nouwvelles Observations sur quelques Echinides 
néogenes de Vile d’ Anguilla. Par JuLes Lambert (Troyes). 
[Plate IX. ] 
GRACE aux bienveillantes communications de Messrs. Gregory 
et Bather, j’ai pu donner en 1915 une note sur Jes “ Echinides 
néogénes des Antilles anglaises,” conservés dans les collec- 
tions du British Museum (Mem. Soc. Acad. de |’ Aube, t. xxix. 
pp. 17-33, pl. 1i.). Mr. Bather a bien voulu me com- 
muniquer les nouveaux matériaux, qui me permettent d’ajouter 
quelques observations sur les espéces miocenes de Tile 
d’Anguilla, et par voie de conséquence de compléter la liste 
des Echinides néogénes des Antilles. Je lui adresse tous 
mes remerciements pour les facilités ainsi accordées & mes 
études et pour Paccueil fait & mon modeste travail par sa 
haute compétence. 
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