NO. 228S. NEW M0LLU8KS OF THE FAMILY TURRITIDAE—DALL. 25 

 CRASSISPIRA BACCHIA, new speciea. 



Plate 6, fig. 1. 



Shell solid, biconic, acute, slate gray with whitish projections; 

 nucleus (eroded) of two brownish whorls, apparently smooth, and 

 nine subsequent whorls; suture distinct, appressed, bordered by a 

 small thread behind and a strong white cord in front betAveen it 

 and the fascicle which is constricted narrow and minutely spirally 

 striated; other spiral sculpture of (on the spire two) peripheral 

 whitish cords, the anterior stronger and swollen where it passes over the 

 ribs ; on the last whorl in front of the periphery are seven similar but 

 smaller cords with wider, minutely striated interspaces sometimes 

 carrying an intercalary thread; on the canal are about half a dozen 

 close-set threads; axial sculi^ture of (on the last whorl 10) short 

 rounded ribs prominent only on the periphery and extending from the 

 fasciole to the canal, with subequal interspaces; there is also a promi- 

 nent rounded varix behind the outer lip ; outer lip sharpedged, smooth 

 internally ; anal sulcus conspicuous, rounded, short, with a strong sub- 

 sutural callus; inner lip erased, dark purple as well as the throat; 

 pillar straight, short, canal hardly differentiated from the aperture. 

 Height of shell, 14.5; of last whorl, 7.5; diameter, 5.5 mm. Cat. No. 

 212372, U.S.N.M. 



Range. — Station 2824, off La Paz, Lower California, in 8 fathoms, 

 sandy bottom. U. S. Bureau of Fisheries. 



It is quite likely that the color of this species varies and may be 

 darker or lighter. 



CKASSISPIRA TEPOCANA, new species. 



Plate 6, fig. 5. 



Shell solid, livid purple under a very dark olive periostracum. of 

 about six whorls exclusive of the (lost) nucleus; suture strongly 

 appressed behind a constricted anal fasciole; spiral sculpture of (on 

 the penultimate whorl about nine) strong flattish threads, equal all 

 over the surface and without intercalary striae; having narrower in- 

 terspaces on the spire and equal or wider ones on the last whorl; 

 axial sculpture of (on the last whorl about 10) sharp edged narrow 

 nearly straight ribs reaching nearly to the canal from the fasciole, 

 with much wider interspaces; aperture narrow, dark purple; anal 

 sulcus rounded, short, with a strong subsutural callus ; outer lip thin, 

 slightly arcuate, smooth within, having a feeble varix behind it; inner 

 lip with a thick layer of enamel, having a raised edge anteriorly; 

 canal short hardly differentiated from the aperture; siphonal sulcus 

 deep, forming an evident fasciole. Height of shell, 19; of last 

 whorl, 12 ; diameter, 8 mm. Cat. No. 224415, U.S.N.M. 



