EEPORT ON THE GASTEROPODA. 605 



though small umbilical furrow behind it. H. 0'12 in. B. 0-064. Mouth, height 0-047, 

 breadth 0'037. 



This form somewhat recalls Barlccia rubra (Mont.), but is slimmer in form, more glossy, the 

 apex is somewhat larger and blunter, the whorls are less convex, and the suture here is not at all 

 impressed ; the inner lip is better defined on the body than in Barlccia rubra, and there is a small 

 umbilical furrow. 



33. Rissoa (Cingula) scopulorum, 1 n. sp. (PI. XLV. fig. 4). 

 July 1875. Reefs off Honolulu, Sandwich Islands. 40 fathoms. 



Shell. — Small, fine-pointed, conical, thin, long, narrow, smooth, glossy, rufous brown, 

 with a short flatfish base, convex outlined spire, many compressed whorls, a slightly 

 impressed suture, and a small short pear-shaped to rounded mouth. Sculpture : Longi- 

 tudinals — there are a few very obsolete lines of growth. Spirals — there are excessively 

 faint microscopical scratches, and there is a very slight carination at the periphery, which 

 occurs at the base of each whorl ; on the first two whorls there are two sharp distinct 

 spiral scratches. Colour is a slightly rufous transparent brown or glossy horn colour. 

 Spire high and narrow, with somewhat convex outlines. Apex small, narrowing very 

 regularly to the extreme tip. Whorls 9 in all, short, small, with a slight tendency to 

 project angularly at the bottom ; the last has a short, straightly conical to rounded base. 

 Suture slight, openly impressed, oblique. Mouth small, shortly oval, bluntly pointed 

 above. Outer lip thin, regularly curved, descending and inflected above, slightly patulous 

 on the base. Inner lip very thin across the body, concave from the insertion of the outer 

 lip to the point of the pillar, on which the edge is patulous, with a very minute chink 

 behind it. H. 0"071 in. B. 0-029. Mouth, height 0-022, breadth 0-015. 



This species varies somewhat in the proportion of length to breadth. I have hesitated very 

 much where to put it. In some of its features it resembles Stilbe of Gwyn Jeffreys, but that is a 

 genus only newly published, and of its relations and limits I know nothing. 



34. Rissoa (Cingula) alveariurn, n. sp. (PI. XLVI. fig. 1). 



Station 24. March 25, 1873. Lat. 18° 38' 30" N., long. 65° 5' 30" W. North of 

 Culebra Island, West Indies. 390 fathoms. Pteropod ooze. 



Shell. — Very small, strongish, hive-shaped, convexly conical, slightly umbilicate, 

 white, with a very blunt rounded tip, barely convex whorls, a linear suture, a flatly conical 



1 With a reference to the place of its findmg. ] 



