174 GENOTIA. 
uniform dark chestnut-color, is nevertheless so close in form 
and sculpturing that I think it belongs here ; the Japanese shells 
with light-colored keel referred to fusca by Mr. E. A. Smith are 
certainly identical with P.gemmata. P. amabilis, Jickeli (fig. 54), 
from the Red Sea has a sharper carina than,the typical gemmata, 
and may possibly rank as a variety. 
P. ARMILLATA, Reeve. PI. 4, fig. 55. 
Shell pyramidally ovate, somewhat fusiform, whorls keeled, the 
middle keel transversely beaded ; sinus large and deep ; yellowish 
white, brown-banded above the keel. L. 19, diam. 8 mill. 
Philippines (Cuming), Australia (Brazier). 
A stouter, shorter species than P. gemmata, with the tubercles 
transverse instead of longitudinal. 
Unfigured and Unidentified Species of Pleurotoma. 
(The subgeneric group not ascertained.) 
P. GRACILLIMA, Carpenter. Bay of Panama. 
Described from a single specimen, °83 in. long, in the Cuming 
collection. Weinkauff has subsequently used the same specific 
name (p. 165). 
P. caAnpIDA, Jonas. H. and A. Adams’ Genera, i, 88. 
P. Sancri-JoAnnis, HE. A. Smith. Japan. 
P. Ne“iia, BE. A. Smith. Mauritius. 
P. Crytonica, KE. A. Smith. | Ceylon. 
P. ALBoFASCIATA, E. A. Smith. Sandwich Islands. 
P. MULTISERIATA, EK. A. Smith. Ceylon, Persian Gulf, 
China Sea. 
P. antipopuM, E. A. Smith. New Zealand. 
Genus GENOTIA, H. and A. Adams. 
G. Mitrarormis, Wood. PI. 7, figs. 1, 2, 2a. 
. Periphery noduled, above it the shoulder is sloping, slightly 
concave, with revolving lines, lightly marked ; below the periphery 
-decussated by close revolving and somewhat curved growth- 
lines ; yellowish or orange-brown. LL. 42, diam. 13 mill. 
W. Africa. 
= 
