On Neogene Echinoids from (he Island of Anguilla. 587 



Fry lias pointed oiif, the sacral diapopliyses (which in Pelo- 

 halidte are supposedly "strongly dilalcMr^) may be iiurdly 

 dilated at all — tor example, in Batrachopsis it is not more 

 developed than in IJeleioporus of the Cystignathida3, and 

 certainly less so than in any of" the Bufonid genera. The 

 urostyle may be ankylosed with the sacrum, monocondylous 

 or dicomiyluus as in the Bufonids. In fact, there is not a 

 character in which the range of variation given for Pelobatidue 

 will not cover Bufonidce also. It is impossible to draw u 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 tbem, and which is now so amp'y 

 filled by CopliopJiryne and Opltryophryne. 



BiBLIOGHAPlIY. 



Anderson. Proc. Zool. Soc. 1871, p. 204. 

 Blyth. Jouni. As. Soc. I5engal, 1854, xxiii. p. 300. 

 BouLENGER. Ami. & i\Iag. Nat. Hist. 1887, ser. 5, xx. p. 4U5 ; ibid. 

 ]888, ser. 6, i. p. 188 ; ibid. 1903, ser. 7, xii. p. 180. 



. Faun. Brit. Ind. 1890, p. 508. 



. Rec. Ind. Mas. 1019, xvi. p. 479. 



Fry. Proc. Koy. Soc. (Queensland. 1915, xxvii. p. 74. 

 Gadow. Cambrid}i:e Nat. Hist. 1909, vol. viii. p. 107. 

 GfTNTHER. Ann. Mus. Zool. St. Peters^b. 189(), i. p. 208. 

 Theobald. Cut. Kept. As. Soc. Bengal, 1854, xxiii. p. 3(X). 



LXX. — NouveJles Observations sur queJijues Echinides 

 neogenes de Vile d' Anguilla. Par JuLES Lambekt (Troye,s). 



[Plate IX.] 



Grace aux bienveiilantes communications de Messrs. Gregory 

 et Bather, j'ai pu donuer en 1915 une note sur las " Echinides 

 neogbnes des Antilles anglaises," con.^erv^s dans les collec- 

 tions (lu British Museum (Mem. Soc. Acad.de I'Aube, t. Ixxix. 

 pp. 17-o3, pi. iii.). Mr. Bather a bien voulu me com- 

 muniquer les nouveaux materiaux, qui me permettent d'ajouter 

 quelques observations sur les esptjces niiocones de I'ile 

 d'Anguilla, et par voie de consequence de completer la liste 

 des Echinides n^ogbnes des Antilles. Je lui adresse tous 

 nies remerciements pour les facilites ainsi accordees u nies 

 <jtudes et pour I'accueil fait h. mon modeste travail par sa 

 haute competence. 



38* 



