MAZATLAN UNIVALVES 287 



Distinguished by its complete cup, attached at its vertex, 

 and generally more or less along one side. Great confusion 

 attends the synonymy of the species, the names extinctorium, 

 rugosa, imbricata & auriculata having been used by different 

 authors to denote very different species. 



_J. 343. CBUCIBTJLUM IMBEICATUM, Sow. 



CalyptraBa imbricata, Sow. Gen. f. 5. Desk, in Lam. An. s. 



Vert. vol. vii. p. 636, no. 33. C. (Dyspotsea) imbricata, Mke. 



in Zeit.f. Mai. 1847, p. 185, no. 36. C. (Calypeopsis) .imbri- 

 cata, B. M. Cat. I)' Orb. Moll. p. 47, no. 409. 

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



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



C. B. Ad. Pan. Shells, p, 222, no. 336. 

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



scutellata, [Gray in] Wood, (B. M. ms.) Ind. Test. Suppl. 



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

 = Calyptrsea (Calypeopsis) rugosa, Less. Voy. Coy. 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, Proc. ZooL 



Soc. June 1855. = Calyptrsea (Calypeopsis) rugosa, pars, 



B. M. Cat. DOrb. Moll. p. 47, no. 408. 

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

 + "Calyptrsea extinctorium?" Sow. Gen.\ f. 3. (Non Lam. 



An. s. Vert. vol. vii. p. 622, no. 1.) Crucibulum extinctorum, 



H. $ A. Ad. Gen. i. 366. 

 = Calyptrsea rugosa, Vol. Voy. Ven. pi. 14, f. 1, (male.) Rve. 



Conch. St/st. pi. 144, f. 1. (Non Desk. loc. cit.) 

 = Calyptrsea (Dyspotsea) dentata, Mke. in Zeit. f. Mai. 1847, 



p. 185, no. 35. (7. B. Ad. Pan. Shells, p. 221, no. 334. 

 Jun. P= Calyptrsea auricularis, Desk, in Lam. An. s. Vert. 



vol. vii. p. 639, no. 40: Enc. Metk.Vers, vol. ii. p. 176, 



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

 Comp. Calyptrsea ?P imbricata, var. Cumingii, Proc. Zool. Soc. 



June, 1856. =C. rugosa, pars, DOrb. loc. cit. (non Desh.) 



* Although this name was published first in time, yet as no description is 

 given, and as the species cannot be recognized in the miserable figure, (as appear* 

 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, while it is given as a distinct species, it is fair to conclude 

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



