62 BULLETIN OF THE 



A rather large, subcyliiidrical, coarsc-lookiiig slicll, without specially pro- 

 nounced characters, yet sceiiiiiigly nut to be affiliated with any of the species 

 described and fiyured with whicli I have been able to compare it. 



P. (Drillia) subsida n. s. 



Shell stout, solid, fusiform, waxy white, with nine whorls ; nucleus brown, 

 smooth, hrst three (nucleai') whorls sculptured with neat flexuous ribs trans- 

 versely disposed ; next four whorls transversely with only the rather strong 

 and distinct rounded lines of growth which cover pretty much all the rest of 

 the shell except the tops of the longitudinal rildets ; tlie longitudinal sculpture 

 a keel just in advance of the suture upon which the posterior edge of the for- 

 mer is appressed, then a few faint revolving striae on tlie bi'oad notch-band, 

 then two more keels, or sharp squarish riblets (on the last whorl ten or twelve), 

 the first marked with numerous knobby waves extending forward in the inter- 

 space toward the second keel rather than outwardly, and sometimes meeting 

 and slightly waving the second keel ; these waves make their ajjpearance on 

 al)out the fifth whorl, and are evanescent on the last whcjrl ; there are about 

 three in a millimeter and a half; aperture narrow, slightly callous ; canal short, 

 nearly straight ; pillar covered with thin, translucent white callus ; outer lip 

 not thickened, but might become so in an older shell. Lon. of sheH, 13.0; 

 of last whorl, 8.0 ; of aperture, 6.0. Max. lat. 5.0 mm. Defl. about 42°. 



Station 43, 339 fathoms. 



A solid, stout, clear-cut species, allied to Drillia Kcnnicottii Dall, of Alaska, 

 but shorter and more spindle-shaped. 



P. (Drillia) nucleata n. s. 



Shtdl polished, waxy white, seven or eight whorled ; nucleus disproportion- 

 ately large, smooth at first, shining, very obtuse, white ; second whorl with 

 about fifteen rather sharp transverse ridges parallel with the axis, and not flex- 

 uous ; these pass gradually into slightly oblique, rounded riblets, which be- 

 gin in front of the notch-band with a slight shoulder, then continue across the 

 whorl, and are somewhat attenuated by the time they reach th(? suture ; of 

 these tliere are about fifteen on the last whorl, less distinct anteriorly ; the 

 lines of growth are tolerably prominent, and especially so on the last whoil. 

 Of revolving sculpture there is little or none; a few microscopic revolving striae 

 are perceptible in some places, especially on the surfiice of the rather broad 

 notch-band ; the suture is appressed ; the shouldering of the riblets gives the 

 upper whorls a rather inflated appearance ; the aperture is short and wide ; 

 the notch deep, with its edges turned up and a little twisted ; the canal short, 

 wide, slightly reflected, showing on the pillar a distinct fasciole ; pillar 

 straight, with a distinct callus upon it and also upon the body-whorl ; outer 

 lip thin-edged, produced and rounded. Lon. of shell, 13.5 ; of last whorl, 9.5 ; 

 of aperture, 5.0. Max. lat. 5.0 ; lat. of aperture, 2.0 mm. Defl. about 29°. 



