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

MOLLrSCA. 65again below this by about seventeen others, having the furrowsbetween them sculptured like those of the spire. The aperture isnarrow, brownish within, about half as long as the shell. Thecolumella is four-plaited, and the outer lip crenulated at the edges.Length 37 millim., diam. 13.Hah. Port Curtis, Queensland {Coppinger) ; island of Ticao,Philippines {Cuming).The above description has been drawn up from two specimensdiffering in certain particulars from the type, one from each of theabove localities. In the British Museum thei'e are two examplesof the typical form from Kurrachee and Bombay, presented byW. T. Blanford, Esq., by whom they were collected. The varietydiffers in having the spire ungradated, a feature giving the outline avery different form, and in having some of the upper liraa upon thelast and preceding whorls double ; both forms have that immediatelybeneath the suture more or less tripartite on the last volution, butin the variety this peculiarity extends to the penultimate whorl.42. Mitrai peasei.Dohrn, Proc. Soc. Zool. 1800, p. 366; Soxcerby, Thes. Conch, iv.pi. 357. fig. 76.Hah. Port MoUe {Coppinger) ; Australia (Dohrn).The figure in Mr. Sowerby's work of this species represents thespire too suddenly tapering, the aperture too wide, and the plaitson the columella should be less equal in size and five in numberinstead of four. The specimen from Port MoUe is not absolutelyidentical with the type described by Dohrn ; it is rather shorter,yellowish, with a white zone at the upper part of the whorls, andanother round the middle of the body-whorl. But the principaldifference lies in the greater coarseness of the spiral ridges : ofthese the upper volutions have three, the penultimate four, and thelast about twenty-four ;the uppermost beneath the suture is aduplex one, and those upon the body-whorl become gradually finertowards the anterior end. The five plaits on the columella graduallydiminish in size until the lowermost is almost obsolete, indeed inone specimen in the Cumingian collection it is entirely wanting.The grooves between the ridges are crenulated by elevated lines ofgrowth, which in the specimen from Port Molle are particularlystrongly developed.43. Mitra (Turricula) corrugata.Mitra corrugata, Lamarck ; Reeve, Conch. Icon. figs. 57 a, b ;Kiener,Coq. Viv. Yil 22. tig. 67; Sowerby, Tlies. Conch, vol. iv. pi. 354.figs. 41, 42.Hah. Port !Molle, on the beach.A specimen from the above locality, of immature growth, is peculiarin wanting the fourth small lowermost fold on the columella* usuallymet with in this species, in other respects according very closelywith the form depicted by Reeve's figure 57 h.