REPORT ON THE GASTEROPODA. 475 



the suture, and the whole details of sculpture are different ; but the specimens of Turritella declivis 

 in the British Museum from the China Sea are in very bad condition. It has some resemblance 

 to Turritella monilifera, Adams and Reeve, " China Sea," but is a thinner shell, not so fine toward 

 the apex, and the upper whorls want the angulation of that species. Turritella congelata, Adams 

 and Reeve, China Sea, is a species with which I was very anxious to compare this, the general 

 form (though not the sculpture) appearing very similar, but that species is not in the British Museum. 

 Having after diligent search failed to find it there, I wrote to Mr B. A. Smith on the subject, and 

 he confirmed my conviction of its absence. 



14. Turritella runcinata, Watson (PI. XXX. fig. 3). 



Turritella runcinata, Watson, Prelim. Report, pt. 6, Journ. Linn. Soc. Lond., vol. xv. p. 218. 



Station 162. April 2, 1874. Lat. 39° 10' 30" S., long. 146° 37' E. Off East Mon- 

 cceur Island, Bass Strait. 38 to 40 fathoms. Sand and shells. 



Shell. — Broadly conical, a little rounded at the basal angle and on the base, thinnish, 

 translucent, and speckled, with a distinct suture and a deep labial sinus. Sculpture: 

 Longitudinals — the surface is closely covered with very fine and strongly curved lines of 

 growth, which on the base are stronger and radiate very straight, but interruptedly, out 

 from the centre. Spirals — there are on each whorl two strongish, but rounded and some- 

 what ill-defined, carinations : of these, the lower and stronger lies about one-fifth of the 

 whorl's height above the suture ; the upper and less definite lies a little more than half- 

 way between the lower carina and the superior suture ; between these two carinas, but 

 nearer the upper one, lies a thread with almost enough of prominence to form a third 

 carina, and this one sometimes supersedes the upper carina altogether. Besides these, the 

 whole surface is sharply fretted with fine, rounded, unequal, irregular, interrupted, spiral 

 threads, of which a considerable number are stronger than the rest, especially those toward 

 the base of the whorls are so. The microscopic spiral frettings, which are distinct from 

 these and very much more minute, are present, but want sharpness. The upper whorls 

 are smooth and polished. Colour yellowish, more or less tinged and speckled with brown 

 and white. The white is strongest toward the top of the whorls and is in suffused patches ; 

 the brown, which also occurs in suffused patches, is prettily dotted in minute specks on 

 the spiral threads. The colour pales on the upper whorls, but the apex is yellow. Spire 

 very perfectly conical, though the contour-lines are interrupted by the projection of the 

 inferior carina and by the impression of the suture. Jpex very fine and small, but rounded, 

 the extreme tip being a little depressed on one side and the first whorl towards its end 

 projecting a very little beyond the second. Whorls 1 5, almost fiat, with a constriction 

 between the two carinas, narrowed gradually upwards, but more quickly into the inferior 

 suture, roundly angulated at the basal edge, with a fiattish base which is but feebly 

 conical. The last four or five whorls are higher proportionally than the earlier, which are 

 of very slow and gradual increase ; the first two are markedly smaller than those which 



