NEW SPECIES OF SHELLS. 



399 



sejuncti, lineis 3 vix conspicuis fusco alboque articulatis (in anfi*. post- 

 penult, evanidis) spiraliter notati ; anfractus ultimus spirara subaequans, 

 rotunde convexus, zona supra griseo-fulva, media et infra fusca ; columella 

 fere recta, tenuicula, intus griseo-lilacea, extus nigra ; apertura semiovalis, 

 intus lilacea ; peristoma simplex, hand reflexum, vix incrassatum, nigro 

 limbatum, margine columellari callo nigro late interne suffuso induto. 



Long. 70, maj. diam. 30 millira. ; apert. long. 28, maj. lat. 16 millim. 



Hob. Santiago de Cou, Peru. 



This species, of which I have only seen a single specimen, is 

 similar in form to 0. Bensoni, but it has no spiral sculpture and 

 the colouring consists principally of light brown zones with a 

 few longitudinal streaks of brown and black ; the articulated 

 painting is very slight, and is only to be seen on the upper 

 whorls. 



Pecttjnculus crebeelieattjs, sp. nov. (PI. XXY. fig. 20.) 



Testa transverse ovata, crassa, subsequilateralis, albida, fusco hie illic 

 sparsim maculata et fasciata, costis circ. 30, parum elevatis, et liris 

 numerosissimis angustissimis radiata, striis concentricis cancellata, minu- 

 tissime granulata ; umbones prominentes ; area ligamenti recta angustius- 

 cula, mediocriter longa ; latere antico rotunde arcuato, postico angulato ; 

 margo dorsalis posticus declivis ; cardine arcuato, dentibus numerosis 

 divergentibus instructo, pagina interne alba, postice fusco tincta. 



Long. 35, umbonis marg. 31 milUm. 



Hal. Moreton Bay, Australia. 



Eesembling Pectunculus angulatus in form, but quite differently 

 sculptured. It is densely radiately ridged throughout and 

 sculptured with minute transverse striae, which give a rough 

 granular character to the surface. The epidermis remaining on 

 the margin of the shell is velvety. 



Crassatella japonica, sp. nov. (PI. XXV. fig. 19.) 



Testa ovato-trigona, crassa, insequilateralis, fulva, fusco radiata, con- 

 centrice irregulariter striata ; umbones acuti, approximati ; area dorsalis 

 utrinque mediocriter excavata ; latere antico rotunde arcuato, postico bi- 

 angulato ; margo dorsalis posticus recto-declivis ; pagina interna carnea, 

 impressiones musculares fulvo imbutae. 



Long. 32, umbonis marg. 27 millim. 



Hah. Japan. 



A very distinct species, though presenting no very prominent 

 characters. The style of radiation is common to many of the 

 Crassatellce, but the rough irregular striation in place of the 

 ordinary concentric grooves is peculiar. 



