10 TJULTJA. 



T. RUGATA, Reeve/ PI. 5, fig. 5(>. 



Whitish or light brown. Length, 1*1 inches. 



Habitat unknown. 



The pertinence of this species to the genus is very doubtful. 

 I have not seen a specimen of it. 



T. MODESTA, Powis. PI. 5, fig. 57. 



Yellowish, longitudinally strigate or maculate or nearly 

 covered with chestnut-brown, with a white central band. 



Length, '8-1 inch. 



Panama. 



Quite as closely related to Etilhria as to the type of this 

 genus. 



T. SULCATA, Kiener. . PI. 5, fig. 58. 



Yellowish white, under a rufous epidermis. Length, 15 mill. 



Habitat unknown. 

 T. EURYTOIDES, Carpenter. 



White, with a revolving series of brown maculations on the 

 periphery; sometimes the base is brown, or the whole surface 

 brown spotted ; with about twenty longitudinal riblets, becom- 

 ing evanescent towards the aperture ; aperture subquadrate, lip 

 scarcely thickened, striate finely within, colnmella abruptly 



truncate. Length, *3 inch. 



Cape St. Lucan, Lower California. 



Has not been figured hitherto, and the specimen before me 

 (an author's type) is not in good condition for illustration. 

 Very probably the species is not a Truncaria,&t all; its size 

 indicates close relationship with Columbella. 



T. TRIFASOTATA, A. Ad. This name is given in the " Genera of 

 Recent Mollnsca," but I have not found a description of it. 



Genus BULLIA, (Jniy. 



Animal without eyes ; tentacles long and slender. Foot enor- 

 mousty expanded, and bifid behind in the typical species. Then- 

 is no operculum. 



Bullia (restricted sense) has a raised band of enamel round tlie 

 sutures of the. whorls as in Ancillaria. The animal has the 

 faculty, according to M. Quoy, of absorbing, through the pores of 

 its foot, a great quantity of water, which it ejects when disturbed. 



