154 PROCEEDINGS OF THE ACADEMY OF [April, 



fascicle. Between sutures there is a strongly undulating presutural 

 spiral followed by several very small spiral striae on the anal fasciole, 

 which is not excavated or concave, and three strong cords, a fourth 

 barel}^ appearing above the suture. Between these cords some very 

 fine and weak spiral striation is visible. On the last whorl there 

 are 17 spiral cords in addition to the presutural cord. There is a 

 strong varix a short distance behind the lip. Anal sinus deep and 

 rounded. 



Length 25.5, of last whorl 14, diam. 9.7 mm. 



Type No. 3296, A. N. S. P. Seventeen other examples are No. 

 3295. 



Some specimens are more slender, the most lengthened being 26.5 

 mm. long, 8.3 wide. 



It appears to stand close to D. severina Dall, but that species has 

 a wdder, "distinctly excavated" anal fasciole, and a relatively 

 longer last whorl. 



Brillia callistura n. sp. 



The spire is straightly turrited, sculptured with regular, acute, 

 slightly protractive axial ribs, of which there are 18 on the penult 

 whorl. The ribs terminate abruptly above, leaving a narrow, deeply 

 concave anal fasciole which is bounded above by a spiral cord a little 

 distance below the suture. In the posterior fasciole and between 

 the axial ribs there are close, fine spiral threads, and weakly marked 

 growih-lines, more obliquely protractive than the ribs. On the 

 last whorl the ribs gradually diminish downward, and are wanting 

 on the narrow anterior end, and the lower half has rather coarse 

 spirals. A rather strong varix stands close behind the lip. There 

 are about 9 acute lirse within the outer lip. 



Leng-th 22, diam. 8, length of aperture 9 mm.; 8 whorls remaining 

 in the tj^De, which has lost the apical whorls. 



Type is No. 2907, A. N. S. P. One specimen. 



This species is closely related to D. jamaicensis Guppy (D. ebenina 

 Dall), from which it differs by having the anal fasciole evenly and 

 distinctly striated spirally, with no trace of the close, arcuate growth- 

 ridges, which predominate in jamaicensis. The anal sinus is not 

 nearl}' so deep and not contracted in front. The throat is lirate. 

 The spire has straight outlines. Finally, it attains a somewhat 

 larger size. 



Drillia ischnatracta n. sp. 



The shell is fusiform, the two apical whorls smooth, following 



