496 GASTROPODA. [Pectinibranchia. 



1. Mangilia cophinodes, Suter, 1908. Plate 21, fig. 20. 

 Mangilia cophinodes, Suter, P. Mai. S., viii, 1908, 188, pi. 7, f. 22. 



Shell small, elongate-oval, white, with traces of a brown spiral 

 band, axially costate and spirally lirate. Sculpture consisting of 

 narrow rounded axial costas, about 18 on the last whorl, getting 

 obsolete on the base ; they are slightly oblique and curved, the inter- 

 stices of the same width as the riblets ; crossed by spiral cords with 

 linear interspaces, 6 on the spire-whorls, about 18 on the body-whorl, 

 the spirals on the beak much finer ; points of intersection very slightly 

 nodulous. Colour whitish, with a trace of a brown spiral band below 

 the periphery. Spire conical, slightly higher than the aperture ; 

 outlines almost straight. Protoconch conic, of 2 smooth whorls, the 

 nucleus broadly rounded. Whorls 6, regularly increasing, mode- 

 rately convex, base contracted. Suture well impressed. Aperture 

 subrhomboidal, roundly angled above, with a short oblique broad 

 canal below, its base very slightly notched. Outer lip lightly convex, 

 somewhat strengthened on the outside by the last axial rib, smooth 

 inside, with a broad and shallow sinus below the suture. Columella 

 vertical, excavated towards the parietal wall, slightly convex below, 

 bent towards the margin of the canal. Inner lip thin and narrow, 

 smooth. 



Diameter, 3-1 mm. ; height, 7 mm. 



Animal unknown. 



Type in my collection. 



Hob. Near the Snares, in 50 fathoms (Captain Bollons). 



Remark. A near ally of this species is the Pliocene M. Hamiltoni, 

 Hutt., which has more prominent smooth axial ribs ; they number 

 only 12 to 15 on a whorl, and the spirals are mostly inconspicuous, 

 and not passing over the ribs, which extend over the whole of the 

 base. 



2. Mangilia devia, Suter, 1908. Plate 21, fig. 21. 



Mangilia devia, Suter, P. Mai. S., viii, 1908, 187, pi. 7, f. 20. 



Shell small, fusiform, turriculate, with distant nodulous axial 

 ribs, continuous over the whorls, spirally distantly lirate, whitish, 

 with indications of 2 brown spiral bands. Sculpture : The proto- 

 conch has a sharp carina on the nucleus, 2 on the succeeding half- 

 volution, and this is continued on the next three spire-whorls, the 

 upper spiral on the angle of the shoulder, the second midway be- 

 tween angle and suture ; on the following whorl a third spiral appears 

 just above the angle of the shoulder, and on the penultimate whorl 

 an additional fine spiral above it, thus giving these lower whorls a 

 more convex outline, the shoulder becoming inconspicuous on the 

 body-whorl, which has 5 additional spirals in front of the aperture. 

 The axial sculpture consists of rather distant, slightly oblique, broad 

 and distant ribs, about 10 on the last whorl, strongly nodulous at the 



