CALLIOSTOMA-EUTEOCHUS. 405 



Var. PERSPECTIVUM (Koch) Philippi. PI. 66, figs. 35, 36. 



Form straightly conical, broader than J iijnbiuum; whorls flat above, 

 not prominent at sutures or concave, the spiral riblets or stria fewer, 

 and all beaded. Color light brown, clouded with darker, often 

 marked with white on the peri[jhery ; umbilicus with a larger per- 

 foration, and bounded by a distinctly beaded rib. 



Alt. 20, diam 17] mill. 



Florida; Georgia; E. Coast Hoiiduras (Simpson). 



Trochus tampaensis Conrad, Proc. Acad. Nat. Sci. Philada. iii, p. 

 26, t. 2, fig. 35, Feb., 1846. — Trochus perspectivus Koch, Philippi, 

 Abbild. u. Beschreib. i (pt. 2), Trochus, 1. 1, f. 5, Feb., 1843.— Phil., 

 Conchyl. Cab., p. 108, t. 17, fig. 9. — Calliostoma jujubinum var. 

 tampaensis Conr., Dall., Bull. M. C. Z. xviii, p. 369,^ — Eutrochus 

 alternaius SowB., P. Z. S. 1873, p. 719, t. 59, f. 5. 



I regret that the name of this variety must be changed from that 

 commonly known in American collections, but I have no choice, as 

 the Koch-Philippi name clearly has priority, and the identity of 

 the species with our tampaensis cannot be doubted. Eutrochus 

 alternaius Sowb. {\A. 40, fig. 21), seems to be identical. Sowerby's 

 remarks on the distribution of Eutrochus are amusing. 



Tyi)ically distinct in the straightly conical form, but said by Dall 

 to blend with jujubinum. In the un)bilicus perspectivum resembles 

 C. juvanicum. 



Var. Rawsoni Dall. Shell smaller, whorls excavated above, 

 umbilicus smaller, pillar thin, and tooth weak or alxsent; color dark 

 red or very dark brown and red, with lunate white cloudings ; cone 

 of shell more acute, nucleus white, minute, globular. (Dall.) 



This seems to be merely the normal young stage of typical 

 jujubintim. 



C. PULCHELLUM Philippi. PL 66, figs. 32. 33. 



Shell conic, perforate, rosy- whitish, painted with blackish-purple 

 flames ; whorls plane, prominent at base, margined, sculptured by 

 elevated transverse lines ; columella straight, base truncate. (Phil.) 



The form is completely conical ; the 6-7 whorls are nearly even, a 

 little concave above, slightly margined below, with about 5 elevated 

 transverse lines, between which there are occasional weaker ones. 

 The last whorl is pretty sharply angular ; base slightly convex, with 

 about 8 concentric elevated lines. Umbilicus narrow, perforating 

 only the last w'horl. Aperture nearly rhombic, columella vertical, 



