PISANIA. 145 



T. iNERMis, Sowb. PL 58, fig. 410. 



White, with a broad chestnut band, and longitudinal flames of 



the same color ; white within. Length, 1*(> inches. 



Singapore ? 

 Tlie two specimens were obtained from a dealer at Singapore, 

 so that the locality it inhabits is very doubtful. See remarks 

 under T. armigera. 



Genus PISANIA, Bivona. 



Between typical specimens of this genus and of Euthria " there 

 is a distinction with a difference," and therefore it may be profit- 

 able to retain both groups ; but there are species in which the 

 characters become so merged that their generic classification is 

 merely arbitrary. 



P. pusio, Linn. PL 71, figs. 188, 189. 



Chocolate or purplish, with revolving series of red-brown 

 arroW-headed markings, bluish within, columella and edge of lip 

 fawn-color ; usually a white central band on body. 



Length, 1*5-2 inches. 



West Indies ; Central America. 



Reeve's locality, California, is an error. 

 P. IGNEA, GmeL PL 71, figs. 190-194. 



Yellowish, spotted and flamed with reddish chestnut, and occa- 

 sionally with white. Length, 1-25-1-75 inches. 



Bed Sea ; Singapore ; Philippines ; Viti Islands. 



The spots in this species are square instead of arrow-like as in 

 P. pusio : they are frequently confluent into longitudinal flames 

 and being interrupted on the periphery, cause it to appear as 

 tliougli light banded. 



Var. Tritonoides, Reeve, PL 71, fig. 193. 



Shell more ventricose, heavier, mottled with white on the 

 periphery and below the sutures. 



Philippines ; Gape of Good Hope (Gould). 



I think Gould's Euthria lacertina (fig. 194) is a synonym. 



Var. FLAMMULATA, Hombr. et Jacq. (not Quoy). PL 11, fig. 192. 



Shell smaller, uniform yellowish brown with a lighter central 

 band. 



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