1880.] MR. K. A. S.VIIIH O.N NEW SHELLS. 483 



his notice; he informs me, too, that, as far as his knowledge of 

 this species extends, it exhibits but comparatively slight variation 

 in point of size. Secondly, the form is not quite the same, the back 

 being higher and more humped. But tbe chief differences are met 

 with at the base. This part is certainly flatter than in any individual of 

 C. thersites I have been able to compare, of a rich orange-red colour, 

 which also extends up about one third of the sides of the shell. Oa 

 the contrary, C. thersites is white upon both sides of the aperture, 

 blotched and stained with black-brown towards the circumference of 

 the base. The teeth on the outer lip are white, and almost always 

 faintly streaked with brown above, the streak becoming broader and 

 more intense in colour towards the margin ; they are also rather 

 more numerous, and not bent over so deeply as in the present 

 species, consequently the labrum is not so thick. Another distinc- 

 tive feature consists in the body-whorl within the aperture being 

 pure white; in C. thersites, judging from the series of specimens 

 I have examined, it is invariably partially uncoated with callus, and 

 of a brown mottled appearance. The aperture of G. thersites at 

 the posterior end curves very much to the left ; in the present 

 form the curvature is very slight. Finally, the geographical distri- 

 bution of C. thersites, according to Mr. Angas (P. Z. S. 186.5, 

 p. 170), "is very limited, the above-named locahty (Salt Creek, 

 Yorke's Peninsula, S. Australia) being the only place where it has 

 hitherto been met with." On the contrary, the shell here described 

 is North-Australian according to the statement of ]\Ir. Jamrach, from 

 whom it was purchased for the Museum. Presuming this to be 

 correct, the probability of its specific distinctness becomes almost a 

 certainty. 



Turbo (Pomatjlax?) taylorianus. (Plate XLVIII. fig. 9.) 

 Testa turbinato-conica, infra plana, imperforata, purpureo-rosea, 

 striffis obscurioribus perobliquis indisti/icte notata, ad basin 

 albida. Sj^ira breviter conica, marginibus rectiuscuUs , Anfractus 

 circiter 8, declives, superne levissime concavi, inferne convexius- 

 culi, ad suturam carina rugosa siibsquamosa ornati, liris nume- 

 rosis granulorum subteqnalium parvorum cincti. Anfr. ultimus 

 infra medium acute carinatus, supra carinam leviter excavatus, 

 infra earn planus. Basis albida, zona externa purpureo-rosea 

 cincta, seriebus concentricis granulorum ornata, in regione umbi- 

 licali callo albo leevi fiavo-marginato induta. Columella albo- 

 callosa, arcuata. 

 Alt. 40 mill., diam. max. 49. 



Hab. ? (From Mr. Lombe Taylor's collection.) 



This species is remarkable on account of its flattened base and the 

 contrast of colour of the upper and lower surfaces. The granular 

 series are about eleven in number on the penultimate whorl, rather 

 more numerous upon the upper part of the last, upon the base of 

 which they number about sixteen, whereof four or five nearest the 

 circumference are of the same colour as the upper part of the shell, 

 the rest being nearly white. The entire upper surface between the 

 Proc. Zool. Soc.— 1880, No. XXXII. 32 



