

MOLLUSCA. 55 



again below this by about seventeen others, having the furrows 

 between them sculptured like those of the spire. The aperture is 

 narrow, brownish within, about half as long as the shell. The 

 columella is four-plaited, and the outer lip crenulated at the edges. 

 Length 37 millim., diam. L3. 



I tub. Port Curtis, Queensland (Coppinger) ; island of Ticao, 

 Philippines (Cuming). 



The above description has been drawn up from two specimens 

 differing in certain particulars from the type, one from each of the 

 above localities. In the British Museum there are two examples 

 of the typical form from Kurrachee and Bombay, presented by 

 W. T. Blanford, Esq., by whom they were collected. The variety 

 differs in having the spire ungradated, a feature giving the outline a 

 very different form, and in having some of the upper lirse upon the 

 last and preceding whorls double; both forms have that immediately 

 beneath the suture more or less tripartite on the last volution, but 

 in the variety this peculiarity extends to the penultimate whorl. 



42. Mitra peasei. 



Dohrn. Proc. Soc. Zool 1800, p. 366; Sowerby, Tlies. Conch, iv. 

 pi. 357. fig. 76. 



Hah. Port Molle {Coppinger) ; Australia (Dohrn). 



The figure in Air. Sowerby's work of this species represents the 

 spire too suddenly tapering, the aperture too wide, and the plaits 

 on the columella should be less equal in size and five in number 

 instead of four. The specimen from Port Molle is not absolutely 

 identical with the type described by Dohrn : it is rather shorter, 

 yellowish, with a white zone at the upper part of the whorls, and 

 another round the middle of the body-whorl. But the principal 

 difference lies in the greater coai'seness of the spiral ridges : of 

 these the upper volutions have three, the penultimate four, and the 

 last about twenty-four ; the uppermost beneath the suture is a 

 duplex one, and those upon the body-whorl become gradually finer 

 towards the anterior end. The five plaits on the columella gradually 

 diminish in size until the lowermost is almost obsolete, indeed in 

 one specimen in the Cumingian collection it is entirely wanting. 

 The grooves between the ridges are crenulated by elevated lines of 

 growth, which in the specimen from Port Molle are particularly 

 strongly developed. 



43. Mitra (Turricula) corrugata. 



Mitra corrugata, Lamarck ; Reeve, Conch. Icon. figs. 57 a, b ; Kiener, 

 Coq. Viv. pi. 22. fitr. 67 ; Sowerby, T/ies. Conch, vol. iv. pi. 354. 

 figs. 41, 42. 



Bab. Port Molle. on the beach. 



A specimen from the above locality, of immature growth, is peculiar 

 in wanting the fourth small lowermost fold on the columella usually 

 met with in this species, in other respects according very closely 

 with the form depicted by Reeve's figure 57 6. 



