GASTEROPODA. 327 



P. Trevellyana, Turt. As the last. 

 P. Farrani, Thompson. 



Of this shell, handsome both in form and colour, two specimens were 

 obtained by Dr. Farran on the Irish coast, he thinks at Portmarnock. 

 Galway, Mr. Barlee. 



P. brachystoma, Philippi. 



This species was found in Bantry Bay in the summer of 1844 and 1845 

 by Mr. Barlee. 



P. JJlideana, Thompson. 



Round the Irish coasts, but rare. 



P. Icevigata, Philippi. 



Mr. Alder -m-ites to me as follows, in Oct., 1846 : — " I have two specimens 

 of what I take to be Pleur. Icecigata, Phil., from Dr. Farran, who got them 

 in Connemara. This shell I have had undetermined in my cabinet for 

 some time, as Mr. Clark gave me worn specimens several years ago. 



P. teres, Forb. 

 One dead specimen was dredged from about 14 fathoms in Birterbuy 

 Bay, County of Galway, in the summer of 184o, by Mr. Barlee. 



Genus Trichotropis. 

 T. horealis, Brod. and Sow. 

 A specimen was found among a quantity of old and worn bivalve shells, 

 dredged from 25 to 35 fathoms, outside the entrance of Belfast Bay, in 

 July, 1848, and sent to me by Mr. Hyndman. Mr. Barlee obtained the 

 species in the summer of this year on the coast of Galway. 



Genus Triton. 

 T. erinaceus, Penn. 



Of general occuiTence. 

 T. elcgans, Thompson. 



Shell turreted, somewhat ventricose, about 8 volutions, numerous pro- 

 minent ribs, crossed by fine raised spiral striae. 



Colour greenish white, with two double spiral lines of yellow, one series 

 above the top of apei'ture, the other rather below it. 



This species is more handsomely formed, sculjrtured, and coloured than 

 Triton erinaceus ; its canal is much shorter. 



I have seen only a single specimen, which was found alive at Portmar- 

 nock, on the Dublin coast, by Dr. Farran. 



A. pes-pelecam\ Linn. 

 Of general occurrence. 



C. FMrojxea, INIont. 

 Gencrallv distributed. 



Genus APORRHAls. 



Family ]nvolut.=e. 

 Genus Cypr^a. 



