13 



musculari bene impressa : incisura hand profunda, intus vix in 

 canalem producta. Long, T 6 , lat. 2 %, alt. T 3 (J poll. Hab. Feejee 

 Islands. 



Allied to E. australis, Quoy, but is much smaller and less 

 deeply checkered. 



Emarginula cinerea. Testa cinerea, E. osseo similis, sed 

 tenuior, altior, magis disposite et delicate clathrata : cicatrice 

 musculari inconspicua : incisura minime profunda, in canalem 

 interiorem valde insignem producta. Long, f , lat. f, alt. 3 poll. 

 Hab. 



Similar to the preceding, but far less solid, and much more 

 regularly and delicately cross-barred ; and if the size of the 

 notch, the development of its canal, and the depth of the muscu- 

 lar impression, are important characters, they are certainly distinct 

 species. 



Fissurella cratitia. Testa solida, elevata, ovalis, albida ; 

 radiis fuscis ad 16 picta, lineis elevatis radiantibus et concentricis 

 sub-equalibus profunde imbricato-cancellata : apice sub-centrali, 

 intus alba ; margine inequaliter crenulato : foramen apicalis sub- 

 rotunda. Long. 2, lat. If, alt. ^ poll. Hab. Puget Sound. 



It has the general aspect of F. maxima, but is sculptured like 

 F. GrcBca. 



Fissurella verna. Testa solida, striata, ovalis, symmetrica, 

 depresso-conica, cinereo-viridescens, atro-purpureo radiata, costis 

 ad 20-30 sub-elevatis, planis, interstitiis adequantibus ; vertice 

 subcentrali, purpureo : fissura parva, ovalis ; margine crenato : 

 intus alliacea, fissurse limbo radiatim striato, purpureo marginato. 

 Long. If, lat. 1^, alt. £ poll. Hab. Port Praya, St. Jago Island, 

 Cape de Verds. 



Much like F. obtusa, Sowb., but more elongated, and with 

 its ribs, more numerous rays and faintly scolloped margin, as well 

 as its distant locality, it may be regarded as a different species. 

 Some specimens are not rayed, and others are entirely dark 

 purple. 



Fissurella occidens. Testa ovata, conica, valde elevata, 

 radiatim multistriata, fasciis atro-purpureis ad 15 et fasciis rosa- 

 ceis alternantibus radiata, apice subcentrali : apertura ovata : 

 facies interna nivea, margine latiusculo viridulo fusco tessel- 



