Mr. A. H. Cooke on Vulsella. 65 



12. Vulsella Ungua-felis, Reeve (Coiicli. Icon, ut sup. pi. ii. 

 figs. 13 a, 13 h). 



Hah. ? [Reeve)., Suez [MacAndreio). 



Onlj another name for a form of spongiarum, Lam. 

 The type is in the Brit. Mus., and is, save for the sculpture 

 being cleaner and the shell in better preservation, undistin- 

 guishable from crenulata, Reeve. 



13. Vulsella corollata,^eeve (Conch. Icon, lit sup. pi. ii. 

 %. 14). 



Hah. Zanzibar (Reeve), Suez {Mac Andrew) . 



This is the V. t-ugosa of Lamarck, and it is extraordinary- 

 how Reeve, with l)elessert's figure before him, could have 

 redescribed it. Delessert's description of rugosa (" comme 

 treillissee par des rugosites longitudinales croisees par des 

 stries d'accroissement arqudes") might serve for a translation of 

 Reeve's description of his corollata (" concentrically densely 

 laminated, laminas crenulately scaled "). V. phasianoptera^ 

 Reeve, is merely a slightly attenuated form of the same 

 species. 



14. Vulsella spongiarum, Lamarck (Anim, sans Vert. ed. 2, 

 vol. vii. p. 268). 



Hah. Indian Ocean? {Lam.), Suez {Reeve, Issel, Mac- 

 Andrew). 



Not the V. sponglarum of Reeve. Lamarck's description 

 is as follows : — " V. testa oblonga, recta, hasi suhattenuata, 

 intus aro-enteo-violacescente : rugis transversis concentricis : 

 longitudinalibus obsoletis." Reeve, however, on what autho- 

 rity I am puzzled to imagine, describes Lamarck's species 

 thus : — " Vul. testa oblonga, arcuata, ad hasin latiuscula, 

 umbonibus divergentibus, radiatim minutissime crenulento- 

 squamata ; fuscescente," — that is to say describing the shell 

 as curved, while Lamarck expressly said it was straight, and 

 as being somewhat broad at the base, while Lamarck takes 

 the trouble to remark that the base is somewhat attenuated. 

 Besides this Reeve throws in the diverging uraboes, of which 

 Lamarck says not a word ; and one would gather from Reeve's 

 description that the striking feature about the stria? was that 

 they were radiating, whereas Lamarck goes out of his way to 

 say that the longitudinal wrinkles are obsolete, while it is the 

 concentric ones that claim attention ! 



My idea of Lamarck's spongiarum is the left-hand shell of 

 the pair figured by Reeve as 13 b. This is the form com- 

 monly found, as indeed Reeve there represents it, imbedded in 

 the sponge, whence its name. 



Ann. (t; Mag. N. Hist. Ser. 5. Vol. xvii. 5 



