174 COSTELLARTA. 



T. FUSCONIGRA, Garrett. 



An unfigured species, dark, brownish black, with a superior 



white spiral line. Length, 18 mill. 



Viti Isles. 



Three dead specimens found. I am not acquainted with it ; 

 appears to be closely allied to the preceding species. 



T. SEMIFASCIATA, Lam. PI. 51, figs. 472, 473. 



Yellowish white or ash-gray on the upper part of the whorls, 

 darker ash or orange on the lower part, encircled by two or three 

 narrow chestnut lines. Length, *75-l'25 inches. 



Red Sea, Philippines, Polynesia. 



T. SEMISCULPTA, Ad. and Reeve. PL 51, fig. 474. 



Ash color tinged with pink, with a light, narrow revolving 



band on the periphery. Length, -9 inch. 



Sooloo Isles, Japan. 



\y T. MUCRONATA, Swainson. PL 51, figs. 475-479; PL 52, figs. 



480-482. 



Whitish or yellowish, stained, spotted or irregularly banded 

 with light chestnut. Length, 1-1*25 inch. 



Bed Sea; Polynesia; in sand, inside the reefs, shallow water. 



Mr. Garrett says the animal is a rich brown, irregularly dotted 

 with yellow on the back, the creeping disk cinereous, the siphon 

 dusky with yellowish spots. 



The shell varies considerably in proportions and in the develop- 

 ment of the spinose tubercles; a smoother form is T. concentrica, 

 Reeve, (fig. 476). I add as synonyms T. fusiformis, Reeve, not 

 Kiener (fig. 477) ; T. obtusispinosa, Sowb. (fig. 478) ; T. ecliinata, 

 A. Ad. (fig. 479) ; T. nodilirata, A. Ad. (fig. 480) ; T. fusiformis, 

 Chemm. (fig. 481 ] ; a narrow variety, which, through T. Dohrni, 

 A. Ad. (fig. 482), approaches T. fusiformis, Kiener. 



T.-VERRUCOSA, Reeve. PL 52, fig. 483. 



Yellowish white, spotted or banded with pale brown. 



Length, 1 inch. 



Philippine*. 



Closely allied to the preceding species, of which it may prove 

 to be a variety. 



