NO. 2 NEW TURRITID MOLLUSKS BARTSCH 7 



remaining and measures : Length, 16.6 mm ; diameter, 6.9 mm. The 

 nucleus was described from one of two specimens, U.S.N.M. no. 

 430038, obtained at the same station. This specimen has 9 whorls 

 and measures: Length, 11.4 mm; diameter, 4.7 mm. Another lot, 

 U.S.N.M. no. 429205, contains seven specimens from station 104 

 taken in 80 to 120 fathoms between latitude i8°3o'4o" N., longitude 

 66°i3'2o" W. and latitude i8°3o'io" N., longitude 66°i3'5o" W. 



In the collection of the United States National Museum is also an 

 undescribed species belonging here, which was labeled Drlllia thru 

 Dall, variety, from the west coast of Florida. 



FUSISYRINX, n. gen. 



Type species. — Fitsisyriiix feniuwrci, new sj^ecies. 



Shell rather fusus-like in appearance with the aperture almost equal 

 to the rest of the shell and a strong, deeply cut sinus at the summit 

 of the whorls. The columella is slender and but slightly twisted. The 

 nuclear whorls ? . Postnuclear whorls with a few strong knoblike 

 ribs, which extend from the anterior limit of the sutural sinus to the 

 periphery. In addition to this there are strong lines of growth which 

 pass over the ribs and intercostal spaces. The spiral sculpture con- 

 sists of fine spiral threads in the sinus at the summit, succeeded an- 

 teriorly to the sinus by stronger spiral threads, between which finer 

 spiral threads are present. This sculpture is also present on the slender 

 columella, where the finer spiral threads are less numerous. Aper- 

 ture very long, the anterior channel very slender and long, the posterior 

 broad and deeply incised. The outer lip is slender at the edge, and 

 the inner lip appears as a smooth callus and as if the shelly substance 

 carrying the outer sculpture had been here resorbed. This also holds 

 good on the parietal wall of the aperture. 



FUSISYRINX FENIMOREI, n. sp. 



Plate 2, figs. 4, 5 



Shell very large, of fusus-like shape, milk-white, covered with a 

 very thin translucent periostracum. Nuclear whorls decollated. Post- 

 nuclear whorls strongly rounded, marked by almost knoblike axial 

 ribs, which extend from the anterior limit of the posterior sinus to 

 the periphery. These ribs are almost as wide as the spaces that sepa- 

 rate them. In addition to this the whorls are marked by sigmoid 

 axial lines of growth. Of these ribs, 10 occur upon all but the pen- 

 ultimate and the last whorl, each of which has 12. The spiral sculj)- 



