68 



longs to the same group as N. trivittata, Say. On some speci- 

 mens a fine thread intervenes between the broader rings. 



BucciNmi (Pollia) farinosum. Testa parva, solida, ovato- 

 rhomboidea, lutescens rufo cincta, spiraliter granulato-filosa, lon- 

 gitudinaliter undato-plicata, plicis ad 8 acutis demum numerosis 

 et prope Iabrum acutum in varicem terminantibus : spira brcvis, 

 conica,anfr. 6 convexis, ultimo antrorsum acuminato,sub-reflexo : 

 apertura angusta, lunata, labro intus 6 plicate ; columella rugoso- 

 granulosa, callosa ; fauce albo. Long. § ; lat. -fjj poll. 



Hab. Sandwich Islands, Kauai. 



This little muriciform species is quite pretty ; and appears to 

 belong to the group of which B. undosum is the type. 



Nassa musiva. Testa solida, ovato-conica, polita, albido et 

 olivaceo marmorata, coloribus in maculis quadratis tessellatim 

 dispositis: spira conica, anfr. 6-7 convexis, bene discretis, ul- 

 timo £ long, testae, prope Iabrum pallidiori, longitudinaliter plicato 

 et lineolis olivaceis cincto: apertura \ long, testcc, ovalis, postice 

 canaliculata ; columella valde arcuata, oblique sulcata; labro 

 intus sulcato, sulcis fuscatis. Long. | ; lat. ^ poll. Hab. Cape 

 de Verds. 



This is one of the most beautiful species of the genus, and is 

 well characterized by its polished surface, and its clouding of 

 white and olive, made up of little quadrate spots, arranged in 

 encircling scries resembling mosaic. It may be B. pictum, 

 Dunker. 



Nassa lurida. Testa solida, conico-ovata, laevis, livido- 

 cinerea albido-variegata : spira conica, acuta, turrita, anfr. 7-8 

 convexiusculis, superne tabulatis et ad angulum crenato-nodosis, 

 apicalibus plicatis, ultimo antice sulcis 3-4 cincto et pone Iabrum 

 plicato ; sutura. canaliculata : apertura £ long, testa;, ovalis, pos- 

 tice emarginata ; columella postice lamellifera, antice dentifera ; 

 labro acuto, albo, extus incrassato, intus sulcato; canali siphonali 

 profundo. Long. ^ ; lat. f poll. Hab. Samoa Islands, Tu- 

 tuilla. 



Resembles JV. musiva in surface and color, but the spire is 

 more elevated, and there is merely a mottling of colors without 

 any definite arrangement. 



