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 extinctoriwm, - 
rugosa, imbricata & auriculata having been used by different 
authors to denote very different species. 
343. CRUCIBULUM IMBEICATUM, Sow. 1G 24f, 
Calyptrea imbricata, Sow. Gen. f. 5.—Desh. in Lam. An. s. 
Vert. vol. vu. p. 636, no. 33.—C. (Dyspotea) imbricata, Whe. 
in Zeit. f. Mal. 1847, p. 185, no. 36.—C. (Calypeopsis) :imbri- 
cata, B. M. Cat. D’ Orb. Moll. p. 47, no. 409. 
Jun. = Calyptrea imbricata, Brod. Proc. Zool. Soc. 1834, 
p. 36:—Zrans. Zool. Soe. vol.i. p. 193, no. 7, pl. 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, pl. 8, f. 4.* , 
=Calyptrea (Calypeopsis) rugosa, Less. Voy. Coq. no. 158 :—~ 
Guer. Mag. Zool. 1839, pl. 2.—(Non. Desh. in Lam. An. s. 
Vert. vol. vu. p. 637, no. 34:=C. lignaria, Brod.) 
Var ?=Crucibulum Pimbricatum, var. Broderipii, Proc. Zool. 
Soc. June 1855.— =Calyptrea (Calypeopsis) rugosa, pars, 
B. M. Cat. D Orb. Moll. p. 47, no. 408. 
=Calyptrea auriculata, P. P. C. Cat. Prov. (non Chemn.) 
+ “Calyptrea extinctorium?” Sow. Gen.+ f. 3.—(Non Lam. 
An. s. Vert. vol. vil. p. 622, no. 1.)—Crucibulum extinctorum, 
H. &§ A. Ad. Gen. i. 366. 
=Calyptrea rugosa, Val. Voy. Ven. pl. 14, f. 1, (male.)—Rve. 
Conch. Syst. pl. 144, f. 1.—(Non Desh. loc. cit.) 
=Calyptrea (Dyspoteea) dentata, Mhe. in Zeit. f. Mal. 1847, 
p. 185, no. 35.—C. B. Ad. Pan. Shells, p. 221, no. 334. 
Jun. P= Calyptrea auricularis, Desh. in Lam. An. s. Vert. 
vol. vii. p. 639, no. 40: — Hue. Meéth. Vers, vol. i. p. 176, 
no. 18.—(Non Patella auriculata, Chemn.) 
Comp. Calyptrea ??imbricata, var. Cumingii, Proc. Zool. Soc. 
June, 1856.—=C. rugosa, pars, D’ Orb. loc. cit. (aon Desh.) 
* Although this name wargpnbiehed first in time, yet as no description is 
given, and as the species cannot be recognized in the miserable figure, (as 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. 
_ Tt Of this shell no outside viewis 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, 
