168 BULLETIN OF THE 



This extremely neat little species is closely approached by F. tenuiliratus 

 Dunker, of unknown habitat, which may prove to be a mere variety or abnormal 

 form of our species. 



Fusus distans Lamarck var. closter Philippi. 



I can fully corroborate the remarks of Mr. Tryon in regard to this variety. 

 It is absolutely indistinguishable from specimens from the Philippine Islands 

 known to be varieties of F. distans. F. Dupetit-thouarsi of Kiener runs through 

 a parallel series of variations. 



Fusus halistreptus n. s. 



Plate XXXV. Fig. 7. 



Shell pure white, of about ten whorls. Nucleus decollate in the specimen ; 

 early whorls with 10-12 faint rounded transverse ribs which become nearly 

 obsolete on the later whorls; lines of growth elevated, sharp, fluted and retic- 

 ulated by the spiral sculpture, giving the surface a rasplike character; they 

 are also gathered into a frilled band just in front of the suture, which they cut 

 obliquely ; spiral sculpture of numerous fine threads, and on each whorl three 

 to five stronger ones, more prominent and sharp-edged on the ribs; aperture 

 email, surrounded with an elevated border; outer lip delicately lirate within, 

 inner lip perfectly smooth, a distinct notch in the callus on the body at the 

 posterior commissure of the aperture ; canal long, slender, subcylindrical. 

 Max. Ion. of shell, 80.0 ; of last whorl, 51.0 ; of aperture, 15.0 ; of canal in 

 front of the aperture, 28.0; max. lat. of shell, 20.0 mm. 



Habitat. U. S. Fish Commission Station 2655, living, in 338 fms., Little 

 Bahama Bank, bottom sandy, temperature 47°. 5 F, 



This species recalls F. Schrarami Crosse, being about the same size and other- 

 wise similar, but it is more drawn out, the whorls are rounded and full, and 

 they are not angulated by the prominent peripheral thread which replaces the 

 carina of F. Schrammi. The gathered oblique lamellae at the suture are also 

 peculiar. 



The soft parts are white except tbe eyes, which are remarkably large and 

 black, and some of the internal organs. The tentacles are very short and 

 small. The operculum and other features seem to resemble those of F. colas 

 as figured by H. & A. Adams. 



Fusus benthalis n. s. 



Plate XV. Figr. 10. 



Shell small, yellowish white, eight-whorled. Nucleus milk-white, polished, 

 two-whorled, smooth. Spiral sculpture of (on the last whorl about 12) rather 

 strong rounded threads, of which three appear on the upper whorls about equal 

 and equidistant, riding over and becoming a little swollen upon the transverse 



