REPOET ON THE GASTEROPODA. 275 



threads ; from the angulation to the snout there are several well-marked threads parted by 

 shallow broader furrows ; toward the point of the snout is a twisted scar. The whole 

 surface is scored by fine, almost microscopic lines. Colour porcellanous white under the 

 thin dirtyish yellow epidermis. Spire rather short and broad, conical, scalar. Apex 

 blunt, round, a little bent in at the tip. Whorls 5^, rounded, slightly angulated near the 

 top, with a slight shoulder above the angle, of rather regular increase ; the last has a 

 somewhat produced base and a very small snout. Sut ure impressed. Mouth rather large, 

 semicircular. Outer Up regularly rounded and open ; seamed within by the spirals of the 

 surface. Inner Up well defined, narrow, having a talc-like iridescence, 1 very straight on 

 the pillar, on the front of which the glaze turns sharply over to the inner side, and leaves 

 there a very slight chink in front : at the point of the pillar the edge is twisted and is 

 bluntly prominent, and above this are one or two faint folds. H. 0'45 in. B. 0'27. 

 Penultimate whorl, height 0*1. Mouth, height 0-22, breadth 0'16. 



In form this species resembles Admete mridula, Fabr. = couthouyi, Jay, of the British Museum ; 

 but that species has not the talc-like inner lip, is not so well shouldered, nor is the shoulder defined 

 by a spiral thread, and the spirals in general are much stronger; the body-whorl is larger, more 

 tumid, and more contracted on the base. Dr Kobelt very kindly copied out and sent me the 

 diagnoses of two species of Cancellaria from the Straits of Magellan, with which he thought I might 

 wish to compare this of the Challenger. These are Cancellaria {Admcte) australis, Philippi, and 

 Cancellaria {Admete) Schythci, Phil. I have not, I think, seen either of these ; but they both seem 

 to be very much more strongly ribbed and spiralled than the present or following species. One of 

 the specimens from Kerguelen contains the animal ; but I failed to extract it, and only ascertained 

 that there was no operculum. In this specimen the folds on the pillar-lip are more distinct than on 

 the Heard Island specimen. 



There is an Admete from Station 149c, Balfour Bay, Royal Sound, Kerguelen, 60 fathoms, which 

 is too much broken for identification, but which is probably this species. 



5. Cancellaria (Admete) carinala, Watson (PI. XVIII. fig. 9). 



Cancellaria {Admete) carinata, "Watson, Prelim. Report, pt. 12, Journ. Linn. Soc. Lond., vol. xvi. 



p. 327. 



Station 149d. January 20, 1874. Lat. 49° 28' S., long. 70° 13' E. Eoyal Sound, 

 Kerguelen. 28 fathoms. Volcanic mud. 



Shell. — Broadly ovate, carinate, spiralled, with a very short, blunt, scalar spire. 

 Sculpture : Longitudinals — there are only fine, sharp, unequal puckerings on the lines of 

 growth. Spirals — a sharp flanged keel lies about the middle of the whorls ; above this is 

 the horizontal, slightly concave shoulder, on which are no spirals ; below the keel the 

 whole surface is scored with fine prominent rounded unequal threads, parted by broader 

 intervals ; those on the snout are feeble. Colour white. Spire very short and depressed, 

 1 From this feature I have derived the name of the species. 



