liXOTIC CONCIiOl.OUY. 35 



Slu'll couvox, pale, with nunicrous obtuso entire loiigitufiinal ribs, diverging from tlie ele- 

 vated and conspicnous spire on the under surface : perforations numerous, roundish and slightly 

 elevated. The interior side of this species is veiy elegant, being sometimes marked by fine lines 

 crossing the sulcations of tlio ribs, owing to some specimens having additional striaj, which in 

 others are obsolete or wanting. Inhabits New Zealand. 



H. CRENATA. 



Testa parvii, ovatA, striis transversis, rugisque nodosis sparsis, scabra ; spira mediocri : 

 foramiuibus remotis, levatis, vi.x rotimdis : labio e.xteriore intus crenato. 



Shell small, oval, with transverse sulcated strife, and scattered nodulous wrinkles ; spire 

 moderate ; perforations remote, elevated nearly round : interior margin of the outer lip crenated. 

 Some specimens are quite devoid of the nodules, in others the striae are very strong, while in 

 some they assume the appearance of distant unequal wrinkles diverging from the spire. The 

 perforations, however, are always destitute of the broad parallel groove (usual in this genus) 

 which is generally between the perforations and the outer lip. 



CASSIS RINGENS, (CASSIDEA). 



Testa pallida, transverse costata, costis sulco liueatis ; labio exteriore dentibus transversis, 

 interiore, dentibus erga basin validis, armato ; dentium serie profunde divisa, 

 margine simplici. 



Wood's Cat. Sup. Bucc. no. 1. 



Shell pale, transversely ribbed, the rib with an impressed line ; outer lip with transverse 

 teeth, inner lip with two sets of strong teeth near the base, di^-ided by a deep notch : the margin 

 simple. Large. The connecting link between Dolium and Cassis uniting the form and ribbed 

 exterior of the fonner to the strongly toothed aperture of the latter. 



C. CORRUGATA. 



Testa pallida, Hneis transversis, fiiscis, interruptis, rugis longitudinalibus, brevibus, nume- 

 rosis, fasciisque 2 nodulosis arnata ; labio interiore dentibus obsoletis, internis 

 armato et ad basim plicato. 



Shell pale, with transverse interrupted brown lines and two bands of small nodules : inner 

 lip obsoletely toothed within and plaited at the base. From the Gallipagos. 



HARPA CRENATA. 



Testa longitudinaliter plerumqiie 12 costata; labii exterioris margine denticulis crenatis 

 armato. 



Shell with about twelve longitudinal ribs : margin of the outer lip with crenated teeth. 

 The mouth is never tinged with the deep blackish chesnut of the common Harp, and the colours 



