MAZATLAN UNIVALVES 287 



Distmj^tdslied by its complete cup, attaclied at its vertex, 

 and generally more or less along one side. Great confusion 

 attends the synonymy of the species, the names extinctorium, 

 rugosa, imbricata & auricidata having been used by different 

 authors to denote very different species. 



343. Cetjcibulum imbeicattjm, Sotv. 



Calyptrsea imbricata, Soio. Gen. f. 5. — Desk, in Lam. An. s. 



Vert. vol. vLi. p. 636, no. 33. — C. (Dyspotfea) imbricata, Mke. 



in Zeit.f. Mai. 18i7, p. 185, no. 36.— C. (Calypeopsis) .imbri- 

 cata, B. M. Cat. BOrh. Moll. p. 47, no. 409. 

 Jun. = Calyptraea imbricata, Brod. Proc. Zool. Soc. 1834, 



p. 36 -.—Trans. Zool. Soc. vol. i. p. 193, no. 7, pi. 27, f. 7.— 



a B. Ad. Fan. Shells, p. 222, no. 336. 

 = Crucibulum scutellatum, Gray, in Mus. Cuming. = Patella 



scutellata, \_Gray in] TFbocZ, (B. M. ms.) Ind. Test. Sit/ppl. 



1828, p. 26, pi. 8, f. 4.* 

 = CaljT)trffia (Calypeopsis) rugosa, ie**. Voy. Cog. no. 158 : — 



Guer. Mag. Zool. 1839, pi. 2. — (Non. Desk, in Lam. An. s. 



Vert. vol. vii. p. 637, no. 34 : = C. lignaria, Brod.) 

 Var ? = Crucibulum Pimbricatum, var. Broderipii, Froc. Zool. 



Soc. June 1855. — =Calypti'8ea (Calypeopsis) rugosa, pars, 



B. M. Cat. D'Orb. Moll. p. 47, no. 408. 

 = Calyptrsea auriculata, F. P. C. Cat. Prov. (non Chemn.) 

 + "Calyptraea extinctorium?" Sojv. Gen.f f. 3. — (Non Lam. 



An. s. Vert. vol. vii. p. 622, no. 1.) — Crucibiilum extinctomm, 



ff.^'A. Ad. Gen. i. 366. 

 = Calyptraea rugosa, Val. Voy. Ven. pi. 14, f. 1, (male.) — Bve. 



Conch. Syst. pi. 144, f. l.-(Non Desh. loc. cit.) 

 = Calyptraea (Dyspotaea) dentata, Mke. in Zeit.f. Mai. 1847, 



p. 185, no. 35.— C. B. Ad. Pan. Shells, p. 221, no. 334. 

 Jun. ?= Calyptra;a auricularis, Desh. in Lam. A71. s. Vert. 



vol. vii. p. 639, no. 10 : — Enc. Meth. Vers, vol. ii. p. 176, 



no. 18. — (Non Patella auriculata, Chemn.) 

 Comp. Calyi^traa ?? imbricata, var. Cumingii, Proc. Zool. Soc. 



June, 1856. — =C. rugosa, pars, L>'Orb. loc. cit. (non Desh.) 



* Although thi3 name was ptiblUhed first in time, yet as no description is 

 given, and as the species cannot be recognized in the miserable figure, (aa appears 

 from its having been overlooked by both Sow. & Brod.,) it does not appear entitled 

 to priority. For the same reason the P. Peziza is laid aside, which may be the C. 

 spinosa. Sow. 



t Of this shell no outside view is given ; but as the inside exactly corresponds 

 with the C . imbricatum, vihile it is given as a distinct species, it is fair to concludo 

 th at it is intended for the uon-pitted variety of that form. 



