In form it approaches nearest to _Conus vitulinus_ of Bruguiere, having the spire not quite depressed, each volution being slightly raised above the last, gradually to the apex; the upper margin of the body whorl is convex: each volution of the spire has a broad and deep groove nearest the upper edge, which thus becomes elevated, while the convexity of the lower part of the whorl forms a channel round the suture, which separates it from the next; this formation of the spire is very remarkable, and unlike what I have seen in any other Cone. Another distinguishing character is, that the whole shell is crossed by very faint, broad, and almost imperceptible punctured lines, very near each other; in some parts discernible with the naked eye, in others almost obliterated by the longitudinal lines of growth: the granulations towards the base are very sharp and nearly white, and the base itself crossed with rough, thick-set, elevated striae. No doubt the colour of this species will be found to vary, when more specimens are discovered. The only one I have ever seen, came with some other very rare shells from Amboyna, and is in my own collection. If the descriptions of _C. canaliculatus_ (Malacanus Brug.) be correct, (for it is a shell I have not seen), it must be quite distinct. * * * * * Pl. 115 [Illustration] PLATYRHYNCHUS cancromus. fem. _Short-tailed Flatbill._ * * * * * GENERIC CHARACTER. _Platyrhinchos_, Temminck. _Sw. Zool. Ill._ (div. I.) Vol. i. pl. 13. _Rostrum tenue, breve, valde depressum, frontis latitudinem superans, mandibulae superioris abrupte aduncae, et ad apicem emarginatae, marginibus dilatatis, et inferioris margines superplicantibus. Nares medii, basi membrana pennis minutis instructa obtecta, apertura parva, rotunda, terminali, tantum non nuda. Rictus ampli, ad mandibulae superioris basin vibrissis rigidis armati. Pedes sedentes, graciles, digitis lateralibus imparibus, digito exteriore ad medii digiti articulum primum annexo, halluce valido._ Bill thin, short, very much depressed, broader than the front of the head; the upper mandible abruptly hooked and notched at the tip; the margins dilated, and folding over those of the under mandible; nostrils central, the base covered with a membrane having minute feathers, the aperture small, round, terminal, and nearly naked; mouth large, armed above with stiff bristles; feet sitting, slender; lateral toes unequal, exterior united to the middle as far as the first joint; hinder claw strongest. * * * * * SPECIFIC CHARACTER. _P. (fem.) supra olivaceo-fuscus, infra pallide fulvus; jugulo albo; genis pennisque spuriis nigris; striga ante et pone oculum, maculoque auriculari albentibus._