174 GENOTJA. 



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 (Cum ing), 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. CANDIDA, Jonas. H. and A. Adams' Genera, i, 88. 

 P. SANCTI-JOANNJS, E. A. Smith. Japan. 



P. NELLIE, E. A. Smith. Mauritius. 



P. CEYLONICA, E. A. Smith. Ceylon. 



P. ALBOFASCIATA, E. A. Smith. Sandwich Islands. 



P. MULTISERIATA, E. A. Smith. Ceylon, Persian Gulf, 



China Sea. 

 P. ANTIPODUM, E. A. Smith. New Zealand. 



Genus GENOTIA, H. and A. Adams.. 

 G. MITR^EFORMIS, Wood. PI. 7, figs. 1, 2, 2 a. 



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. L. 42, diam. 13 mill. 



W. Africa. 



