66 



Zoological Society. 



the former erect, the latter pendent ; wings rather long ; tail large, 

 and forked when closed ; feet large and strong ; tarsi bare of feathers ; 

 hind-toe and nail longer than the middle toe and nail. 

 Types, Trochilus Guerinii and T. Lindenii. 



3. On Fastigiella, a new genus of Shells of the Lamarckian 

 Family Canalifera. By Lovell Reeve, Esq. 



The shell which I am about to describe, from the collection of 

 Hugh Cuming, Esq., is of an entirely new form, differing generically 

 as well as specifically from any of the class to which it belongs. It 

 is of an elongated turreted growth, and may be said to partake in 

 almost equal proportions of the characters of two genera somewhat 

 removed from each other in the system, Turritella and Cerithium. 

 As in Turritella, the shell is of a solid spirally-ribbed structure, with- 

 out any indication of varices, a condition not to be found in Cerithium; 

 whilst it possesses a character which excludes it from the family 

 Turbinacea, in having a short umbilicated twisted canal, different 

 from that of Cerithium, for the passage of an elevated fold of the 

 mantle. At the base the shell is not much unlike some species of 

 Buccinum, hut it is remarkable for its elongated Turritella- like growth. 

 It is, moreover, to all appearance the production of a carnivorous 

 gasteropod, and more strictly referable to the Canaliferous tribe than 

 the Cerithia, which, according to Deshayes, are vegetable-feeders, and 

 partake in many instances of the freshwater habits of the Melanicd. 



Unfortunately Mr. Cuming is not in possession of any information 

 respecting the shell, either as touching the animal or its place of 

 habitation, and it only remains to add the following description, with 

 the hope that the attention of conchologists will be directed to a form 

 which appears new and of much interest. 



Class GASTEROPODA. 

 Order PECTINIBRANCHIATA. 

 Family CANALIFERA. 

 Genus Fastigiella. 

 Testa elongato-turrita, basi contracta etumbilicata, 

 apertur^i, parvii, canaliculata, canali brevissimo, 

 subcontorto. 



Fastigiella carinata. Fast, testa lanceolatd, 

 anfrnctibus rotundatis, carinis tribus, earum in- 

 terstitiis nitide cxcavatis, spiraliter cinyulatis ; 

 extus intusque alba. 



Hab. 



Lonj 



l|in. 



lat. f in. 



On the characters of this species it may be re- 

 marked that there are ten forcibly developed keels 

 to a whorl, all of which are concealed from the ob- 

 server by the superposition of one whorl upon an- 

 other excepting three, these being the most distant 

 from each other. 



