TURBONILLA. 333 



T. FESTIVA, Folin. PL 76, fig. 30. 



Whitish, suhdiaphanous, with a few, very distant longitudinal 

 costa?, extending to the base, the very much wider interspaces 

 spirally striate ; whorls 7, suture profound. Length, 2'5 mill. 



Panama. 

 T. TENUICULA, Gould. PL 76, fig. 3 i. 



Rather solid, shining, wax-} r ellow, a little dusky below the 

 suture; whorls 10, flat, slightly shouldered above, with about 

 20 straight, longitudinal ribs, the summits of which are cut by 

 numerous fine revolving striae, deeper in the interstices, which 

 extend over the base of the shell, the ribs terminating about the 

 periphery ; revolving striae showing through the aperture. 



Length, 7'5 mill. 



Southern California. 

 T. SUBCUSPIDATA, Carp. PI. 76, fig. 33. 



Differs from the preceding in being more distantly ribbed, 

 with broader interspaces, closer and deeper spiral sculpture, the 

 tops of the ribs elegantly muricated with projecting, curved 

 lines between ; the suture more deeply impressed. 



Length, 6 mill. 



S. Diego, Gal. 



Perhaps only a variety of the preceding species. 



T. TORQUATA, Gould. PL 76, fig. 34, 32. 



Solid, white ; whorls 8, a little convex, with about 16 oblique, 

 flexuous longitudinal ribs, not extending to the base, periphery 

 subangulate, no spiral sculpture, base smooth. Length, 5 mill. 



Sta. Barbara, Gal. 



T. Vancouver ensis, Baird, is a synonj'm. 



Yar. STYLINA, Carp. (fig. 32), is a narrower form than the type ; 

 T. gracillima, Gabb, is a synonym of it ; T. Gabbiana, 

 Cooper, another. 



Unfigured Species. 



T. LORDI, E. A. Smith. Vancouver's Island. 



T. VIRGO, T. CREBRIFILATA, T. CCELATA, T. AURANTIA, T. CHOCO- 



LATA, T. TRIDENTATA, all of Carpenter. California. 



T. TENU1LIRATA, T. MURICATA, T. G1BBOSA, T. PROLONGATA, T. 



C.B.ADAMSI, T. GRACILLIMA, T. FLAVESCENS, T. TEREBRALIS, 

 T. TJNIFASCIATA, Carpenter. Mazatlan. 



