MAZATLAN UNIVALVES 335 
haud magnorum sub suturam haud impressam : serie granulo- 
rum parvorum ad peripheriam, in spird super suturam viz 
monstrante ; alterd minorum in basi; spird in medio anfrac- 
tuum sublevi ; labro obscure bigonato ; canals anteriore longo, 
recto, declivi, vix recurvato. 
=C. umbonatum, Sow. in Mus. Cum. 
Comp. Cerithium musica, Val. Rec. Obs. p. 277, (Acapulco.) 
This shell, named C. famelicum by Mr. Cuming as from 
C. B. Adams, does not agree with the description given by the 
Professor; still less with that of C. uncinatum, to which Sov. 
unites the species. It more nearly resembles the W. Indian 
C. litteratum Brug. (Lam. An. s. Vert. ix. 303) but is much 
more slender. It is characterized by the entire absence of the 
stout tubercles in the middle of the whirls, by a smaller row at 
the top, a still smaller at the bottom, and a yet smaller round 
the base. The labrum has two obscure angles between the 
canals. The glossy aspect of the shell is very characteristic 
and beautiful. The young shell is like the adult, but with 
obsolete rib’ instead of tubercles. Long. °98, Long. spir. °67, 
lat. °38, div. 25°. 
Hab.—?Taboga, rare, C. -B. Adams.—Mazatlan ; 1 fresh sp. ; 
L’pool Col.—S. W. Mexico, do. P. P. C. 
Tablet 1587 contains the specimen. 
383. CERITHIUM PUNCINATUM, G'mel. 
Murex uncinatus, Gmel. p. 3542, no. 57.—Dillw. Deser. Cat. 
vol. u. p. 751, no. 146.— Wood, Ind. Test. pl. 27, f. 150. 
Murex, no. 198, Schroet. Hinl. vol. 1. p. 611. 
Strombus muricatus et marmoratus, Schroet. Flusch. p. 379, 
pls, 15. . 
Cerithium uncinatum Desh. in Lam. An. s. Vert. vol. ix. p. 315, 
no. 49.— Sow. Thes. Conch. pl. 180, f. 79. 
?=Cerithium famelicum, C. B. Ad. (pars) loc. cit. 
This species suits with tolerable precision the very accurate 
description of Desh., and in the main that of C. B. Ad. The 
locality however of C. uncmatum is unknown, and it may be a 
distinct though similar Caribbean species. In that case the 
name C.famelicum may be retained for this shell and C. me- 
dioleve for the Mexican. This is characterized by the row of 
very stout tubercles ascending the spire in the middle of each 
whirl ; with two smaller, closer rows, one just below the suture, 
