﻿28 G. and H. Nevill— 0;? New Ifarlne Mollusca. [No. 1, 



Teochus [Monilea] Masoni, n. sp., PI. I. Fig. 1. 



Shell in form resembling M. callifera^ Lam. but more depressed ; whorls 

 six, closely and acutely spirally keeled, alternate keels larger, very closely, 

 obliquely decussated, both on the ridges and in the interstices, whereas in M. 

 callifera the ridges only are decussated ; flesh-coloured or white, above radiately 

 striped at wide intervals with reddish-brown, partially continued on the 

 base, throughout irregularly and closely mottled with brown ; base closely 

 ribbed, ribs scabrously decussated, a broad and raised callosity round the 

 open umbilicus, this callous rib being very closely and regularly convexly 

 striated ; columellar margin very thick and callous, much contorted, interior 

 of the aperture barely striated, nacre very thick and brilliant. 



Alt. 11 Mil,, Diam. 16 Mil. 



Andamans. (Coll. Eev. J. Warneford,Dr. Stoliczka, and Indian Museum). 



SCUTTJS [?] ABNORMIS, n. sp., PI. I. Fig. 12. 



Shell colourless, thin, oblong, slightly arched ; apex nearly central, broad 

 anteriorly and squarely truncated, posteriorly abruptly and peculiarly 

 compressed, forming in the centre, from the apex to the margin, a deeply 

 excavated trough, with a corresponding raised, acute projection in the inte- 

 rior ; concentrically and continuously striated, striae anteriorly abruptly 

 angled. This remarkable shell is unlike that of any mollusc hitherto describ- 

 ed, and should probably form the type of a new genus ; unfortunately 

 neither Dr. Stoliczka nor ourselves have as yet been successful in obtaining 

 it alive, it therefore seems best to class it temporarily as a species of Scutus, 

 although it differs from all the known species of that genus in being 

 posteriorly, not anteriorly, acuminated and compressed j the internal, acute 

 ridge is also peculiar. 



Long. 31 Mil., Diam. 19 Mil. 



Penang (Dr. Stoliczka). Chandpur, Bay of Bengal. 



LiMOPSIS COMPRESSA, n. sp., PI. I. Fig. 17. 



Shell resembling L. Japonica^ A. Ad. but more compressed and the 

 umbones more prominent, it is much less inasquilateral than L. cancellata, 

 Rv. ; the interior is of a distinct green hue, irregularly and somewhat in- 

 distinctly longitudinally striated ; there are about fourteen teeth, slightly 

 and irregularly tinged with chesnut-brown, on each side of the hinge j ex- 

 ternally it is sculptured with rather crowded longitudinal striae, scabrously 

 decussated and with the alternate strise larger ; umbones prominent and 

 acute ; epidermis very long, thick, and silky. 



Long. 20 Mil, Diam. 20 Mil., Alt. 5 Mil. 



Andamans. Dredged alive at 8-13 fths. (J. Wood-Mason). 



[Coll. H. Adams, Esq., Dr. Stoliczka, Rev, J. Warneford, Indian 

 Museum.] 



