90 BULLETIN OF THE 



Drillia pagodula n. b. 



Plate XIII. Fig. 6. 



Shell resembling D. fucata, but much more slender, the fasciole less im- 

 pressed, the spiral sculpture of fine engraved lines and the aperture smaller 

 and much more narrow. Nucleus glassy, rounded, two-whorled ; shell with 

 eight or nine strongly ribbed whorls; spiral sculpture, sometimes obsolete 

 near the suture, of extremely fine, wavy, close-set, incised lines; transverse 

 sculpture of (on the penultimate whorl 9 to 11) nearly straight stout ribs ex- 

 tending from the suture over the periphery and lost on the base ; fasciole not 

 well marked; suture distinct, somewhat appressed, undulated by passing over 

 the ribs; surface more or less lustrous; color white, spirally banded with rich 

 yellow brown, sometimes on the periphery, sometimes on the base, etc., but 

 the fasciole is usually white and the ribs are apt to show white, wholly or in 

 part on the yellow, when present. Aperture short, narrow, with hardly any 

 canal; notch large and deeper than wide; outer lip thin, not internally lirate; 

 throat white; inner lip a little callous; pillar short, simple; canal very short, 

 not differentiated from the aperture ; varix stout and prominent. Max. Ion. of 

 shell, 18.0; of last whorl, 9.0; of aperture, 6.3; max. lat. of shell, 5.8 mm. 



Habitat. West of Florida, in 50 fms. ; off Havana, Sigsbee, in 119-175 fms. ; 

 Station 177, in 118 fms., sand, off Dominica, temperature 65°. ; Stations 273, 

 282, and 290, near Barbados, in 73 to 154 fms., coral and sand, temperature 

 56° to 71° F. 



This species may be pure white, banded with yellow brown or spotted be- 

 tween the ribs with pink or brown. 



A young shell, similar to the above but stouter, with the tip white, the 

 whorls whitish and the summits of the five ribs brownish, was dredged by the 

 Fish Commission in 49 fms., off Cape Hatteras, N. C. The ribs are continuous 

 from base to summit and the cross-section of the shell forms an exact pentagon 

 with rounded angles. The ribs are not continuous, except accidentally, in 

 those previously described; but this may perhaps be an extreme variety (for 

 which the name ■pentagonalis may be used) of D. pagodula. The indications 

 are that it is the young of a distinct species. Ldn. of shell, 7.0 ; of last whorl 

 (there are four beside the nucleus), 5.0 ; max. lat. of shell, 3.0 mm. There are 

 two similar specimens. The Manyilia pentagonalis (Gray) Reeve is a smaller 

 and much more slender shell. 



Drillia coccinata Reeve. 

 Pleurotoma coccinata Reeve, P. Z. S., 1845, p. 118 ; Conch. Icon. sp. 299, Dec, 1845. 



Habitat. Station 128, off Santa Cruz, in 180 fms. ; Station 272, in 76 fms., 

 Barbados. Living, in 16 fms., Samana Bay, Santo Domingo, Couthouy. 



The shell varies from white to brown or rose-pink, and may be stout or 

 slender, with 8 or 10 ribs on the last whorl. The fasciole is always well 

 excavated and smooth. 



