64 



THE NAUTILUS. 



much smaller umbilicus tlian the Bermudian species, which is more 

 depressed than Z.^itida, with a more open and perspective umbilicus. 

 This shell is abundant a,t the place mentioned, where it is asso- 

 ciated with numerous other land shells, most of them native species. 

 We have been unable to find any foreign species to which this may 

 be referred. It seems to be indigenous. The generic reference ha& 

 been verified by examination of the dentition, which has teeth of the 

 type usual in Zonitoides. There are 6 lateral and about 17 marginal 

 teeth (fig. \d). The jaw is smooth, with a low median projection 

 (fig. Ic). We found no dart in the two dried specimens examined^ 

 but this may have been due to their condition. 



Fig. 1. Zonitoides bermudensis. 

 Kaliella turbinata (Gulick). 



Euconulus turhinatus Gulick, Proe. A. N. S. Phila., 1904, p. 

 420, pi. 36, figs. 8, 9, 10. 



This species is abundant at Church Cave. An examination of the 

 radula shows it to be a typical Kaliella. It resembles the Indian 

 K. fastigiata (Hutton), but is distinct from that and all other known 

 Indian species, according to Lieut. -Col. Godwin Austen, who kindly 

 compared specimens with his great series of oriental species. 



K. turbinata was described from sub-fossil examples from the 

 lime-rock quarries. It is therefore not a recent importation; yet 

 the presence of this oriental genus in Bermuda can hardly be 

 accounted for except by the supposition of introduction with plants 

 during the period of human occupation. 



