474 

 2. Haniinea ditbia n. sp. PI. XXXII, fig. 8, 9. 



Stat. 37. Sailus ketjil, Paternoster-islands. 27 M. and less. Coral and coralsand. 5 Spec. 



Shell ovate, roundedly-truncated above, more contracted below, thin, pellucid, white. 

 Sculpture consisting of rather strong, radiating striae and a few conspicuous, impressed, spiral 

 striae, at the upper and basal part of body-whorl, the median part of that whorl being covered 

 with very fine, close-set spirals, only visible under a strong lens. Spire concave, but scarcely 

 umbilicated, quite or nearly concealed by the enamellous point of junction of the peristome, 

 the border of the spiral excavation is rounded, the space within that border is opaquely-white, 

 by an internal layer of enamel, visible at the peristome. Aperture elongate, with raised, 

 rounded upper margin, somewhat contorted at its insertion; outer margin thin (broken), moder- 

 ately curved, more so above and below, narrow, compressed, gutter-like at the base. Columellar 

 side of body-whorl convex, with a thin layer of enamel; columella concave, forming a strongly 

 contorted fold at its lower part, ending below in the basal gutter, reflected over the umbilical 

 region, which is bordered by a blunt rim of the same opaquely-white colour as the spire. 



Alt. from vertex to base of apert. ii^/o, lat. 7; apert. alt. 12Y2, lat. 3Y3 Mill. 



Alt. from vertex to base of apert. 10Y2, lat. 6^8 ', apert. alt. iiYsi 1^^- 3 Mill. 



This species has much puzzled me ; at last I asked the 'opinion of Mr. Smith, who 

 thought it might be a Haniinea ; as however the base of aperture was quite different, I was 

 by no means certain. The preservation of the specimens was rather bad, nevertheless I got 

 a defective radula and 3 gizzard-plates. I found many rows of teeth, the laterals (i) have a 

 subquadrate base and a simple, long cusp; as median tooth (M) I may consider a triangularly 

 rounded object, but I see no cusp. The gizzard plates are brownish, with a median keel, they 

 are many-articulated, having the appearance of a contracted, many-valved chiton ; length of 

 gizzard-plates about i, breadth about ^j, Mill. These plates and the laterals are in accordance 

 with what is known of Haniinea^ and so I have left the species in that genus, though with 

 some doubt, as the simple shape, of what I consider to be the median tooth, is more that of 

 Atys, as figured by Bergh in Semper's "Reisen im Archipel der Philippinen". The measurements 

 of latitude of shell are not quite trustworthy, as the peristome is more or less broken, especially 

 in the largest specimen. 



Fam. Hydatinidae. 

 Hydatina Schumacher. 



I. Hydatina sp. 



Stat. 193. Sanana-bay, East coast of Sula Besi. 22 M. Mud. i Spec. 



The shell of the only specimen has been destroyed by formol, and cannot be identified ; its 

 epidermis reminds that of H. physis Lin., but the brown spiral Hues are so much more crowded, 

 that it seems to be quite different; however the specimen is too much shrunken for description. 



