146 Dr. J. C. Melvill on Marine Mollusca 



Sti/loptiigma clymene * } sp. n. (PI. IV. fig. 15.) 



S. testa parva, tenui, alba, perlcevi, elongata, supra brevicaudata ; 

 anfractibus ad 9, quorum apicales duo laterali-beterostrophi, 

 CDDteris ad suturas impressis, pernitidis, ultimo 3 longitudinis 

 totius sequante ; apertura parva, ovato-rotuuda, labro recto, colu- 

 mella fortiter uniplicata. 



Long. 5, lat. 1-25 mm. 



Hab. Persian Gulf, Mussandam, 55 fathoms. 



A somewhat stouter species than the allied S. cometes, 

 Melv., which is more caudate, and subpellucid. I think it is 

 light to place it in the same genus ; by some it might be 

 included in S>/rnoht. 



Cingulina secernenda, sp. n. (PI. IV. fig. 17.) 



C. testa minuta, attenuata, oblonga, alba ; anfractibus ad 9, quorum 

 tres apicales, heterostrophi, lseves, lacteo-vitrei, cseteris undique 

 uniformiter arete spiraliter carinati et tornati, carinulis rotun- 

 datis, interstitialiter sub lente alveolatis, superuis duabus, aute- 

 et peuultimo tribus, ultimo septem carinulis prseditis ; apertura 

 oblongo-ovata, peristomate paullulum incrassato, albo, columella 

 omnino simplice. 



Long. '3-50, lat. 1 mm. 



Hab. Karachi. 



Very like, superficially, to Oscilla indica, Melv., but 

 wanting the columellar plait. 



An Oscilla occurred, likewise, on the telegraph-cable in the 

 Gulf of Oman, at 43 fathoms, resembling this species, but 

 more elongate than 0. indica, with the same character of 

 tornate whoil ornamented with spiral carinse, columella 

 strongly once-plicated ; long. 4"75 mm. This we have placed 

 with our 0. faceta t, as probably exemplifying the adult 

 state of that species. The mouth, however, is smaller and 

 rounder, and there are other slight differences ; but nothing- 

 can be decided till more specimens are obtained. 



* Clymene, a Nereid, daughter of Oceanus and Tethys, and mother of 

 Phaeton. 



t Journ. of Malac. vol. xi. 1904, p. 82, pi. viii. fig. 10. 



