Report on the zoological collections made in the Indo-Pacific Ocean ...

64 COLLECTIONS FROM MELANESIA.C. pupa, and C. petrosum, may be recognized in all its forms by theoblique varix on the back of the body-whorl, a feature not found inC. morns and C.patiens ( = 7-iif/osum). The typical form and thevariety G. variegatum are pupit'orm, having the sjiire acutely conicaltowards the apex and the last whorl scarcely broader than thepreceding one. The granulations appear to be never in more thanthree rows on the upper whorls, but on the penultimate a fourth isfrequently, but not always, observable adjoining the lower suture.The bodj'-whorl has normally seven principal series of granules ;bub in many instances the minor or intermediate series attain aslarge a size as the principal ones, when the number of rows may benine to a dozen or even more. The variations in colour are considerable: normal specimens are whitish varied with black, brown, andwhite tubercles.The var. variegatuyn is irregularly blotched with light or darkbrown, and some specimens are almost entirely of a uniform darkbrown (Couch. Icon. fig. 41 a). Another has a light brown band immediatelybeneath the suture and a second broader one at the baseof the body-whorl, as in C. p?