

TURBINELLID^E. 



very probably this species, but has never been figured, and 

 remains unidentified. 



D. RETUSA, Lam. PL 18, figs. 365-367. 



Marbled with chestnut and white, or blush-pink, sometimes 

 obscurely banded with spots around the suture and on the 



periphery. Length, 1 inch. 



Liberia. 



D. Tryoni, Crosse (fig. 367), is described from a remarkably 

 thickened specimen, with a copious callous deposit on the colu- 

 mella, but it does not afford an}' varietal characters. 



D. JAPONICA, A. Adams. PL 18, fig. 368. 



Light fulvous, ornamented with brown longitudinal flames and 

 spots variegated with white, especially around the suture. 



Length, 1 inch. 



Japan. 



The pertinence of this species, as well as of those which 

 follow, to the group, is somewhat doubtful, as they have the 

 form of Nassa, including its pyramidal spire. 



D. PYRAMIDALIS, A. Adams. PL 18, fig. 369. 



Yellowish brown, apex violet-tinged. Length, -85 inch. 



Port KUznlteth, So. Africa Marrat. 



D. RINQENS, A. Adams. PL 18, fig. 370. 



Brownish orange. Length, -7 inch. 



Habitat uuk/ioir/i. 



A singular species which unites the sculpture of Nassa with 

 the mouth of Desmoidea the latter even exaggerated in its 

 characters. 



Family TURBINP:LLIDJB. 



This group includes a feAv ponderous tropical species, allied 

 in the characters of the mouth, and in general form and orna- 

 mentation to the Peristerniinee (see vol. iii, p. 79), on the one 

 hand, whilst in size they approach the Volutidae. The plications 

 on the middle of the pillar arc rather distant, narrow, high, and 

 transverse, whilst in Fasciolariinae they are situated lower, are 

 not so prominent, and oblique in direction. The epidermis is 

 frequently persistent. 



