296 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 



occasional finer intercalary threads ; these are crossed hy (on the last whorl about 

 thirteen) rather stout, rounded ribs, strongest at the shoulder, obsolete beyond the 

 periphery, and not reaching the suture behind them ; aperture rather long, outer 

 lip simple, smooth, not reflected or lirate ; pillar rather straight, with three strong 

 plaits ; canal shallow, wide, pointed, making no perceptible fasciole ; umbilicus 

 uone; body with a thin wash of callus. Height of shell, 43; of last whorl, 33; 

 of aperture, 25 ; width of last whorl, 21 mm. 



U. S. S. " Albatross," station 3354, in 322 fathoms, green mud, Gulf of 

 Panama, bottom temperature 54°.l F. U. S. N. Mus. 122,995. 



This species has much the look of a gigantic Admete, but without the arched 

 piUar. Most of the specimens were eroded, and the species has a genuine abyssal 

 aspect. 



Cancellaria (Merica?) microsoma Dall, n. sp. 



Plate 11, figure 10. 



Shell small, thin, covered with a pale brownish periostracum, with about five 

 tabulate whorls beside the (lost) nucleus; suture distinct, not channelled; whorl 

 in front of it flattened, beyond the keel at the shoulder moderately rounded ; axial 

 sculpture of lines of growth which are at intervals so prominent as to suggest 

 faint ribs ; spiral sculpture comprising a marked keel at the shoulder, minutely 

 undulate by the axial riblets, and followed by a wide interval ; about eight less 

 prominent spiral threads, separated by successively narrower intervals with micro- 

 scopic intercalary threads, covering the whole base ; aperture ovate, outer lip thin, 

 simple, sharp ; body smootli ; pillar straight, short, thin, with two plaits, the anterior 

 of which forms the edge of the columella; anterior part of aperture with a distinct, 

 but not deep, rounded notch. Lon. of shell, 3.5 ; of last whorl, 2.5 ; of aperture, 

 1.7; max. diam. 1.8 mm. 



U. S. S. "Albatross," station 3418, off Acapulco, Mexico, in 660 fathoms, 

 sand, bottom temperature 39° F. U. S. N. ]\Ius. 122,997. 



This small species might be referred to Admete were it not for the absence of 

 the concave arcuation of the pillar which is characteristic of that genus, aud the 

 presence of a small umbilical chink. 



Cancellaria (Admete ?) californica Dall, n. sp. 



Plate 4, figure 4. 



Shell thin, turrited, with five whorls beside the nucleus, white, with a pale, 

 olivaceous periostracum ; nucleus blunt, turgid, of about a whorl and a half, smooth 

 but not polished; subsequent whorls with a prominent angular shoulder, above 

 which the whorl is tal)ulate, the angulation becoming obsolete in the last whorl of 

 the adult shell ; in the early whorls the space between the angle and the suture be- 

 hind it is nearly smooth and flat, later it has faint spiral threads and becomes more 



