Manchester Memoirs, Vol. xlii. (1898), No. 4. 19 



with acuminate spire, somewhat shining, very pale straw 

 colour or whitish grey, whorls eight, the first three being 

 smooth, the rest regularly spirally line-furrowed, the sutures 

 are impressed, and the sutural plaits are shown by a 

 double row of thickened spiral costulae, there is no sign of 

 decussation or granulosity, the aperture is ovate, outer lip 

 slightly effuse, thin, canal short, columellar slightly 

 excavate. The operculum, which is present in both 

 specimens examined, is horny brown, ovate, with serrated 

 margin, and apical nucleus. (Karachi is at the mouth of 

 the R. Indus, hence the trivial name.) 



MUREX (Ocinebra) flexirostris, sp. nov. 



(PI. I, f II.) 



M. testa fusiformi, utrimque acuminata, brunnea, asper- 

 rima, spira turrita, anfractibus septern, apicalibus duobus 

 Icevibus, cceteris vix varicosis, squamosis, longitudinaliter 

 crassicostatisy angulatis, spiraliter liris squamiferis accinctis, 

 anfractu ultimo adbasim attenuato, canali longa, Jlexirostri, 

 apertura rotundo-ovata, labro fimbriato, dorsaliter, juxta 

 labrum, varicifero, columella et interiore pallide violacea. 



Long. 8, lat. 4 mm. 



Hab. Muscat, 10 fathoms, coral sand. 



A distinct little Ocinebra, being, in the most perfect 

 of the specimens, which is selected for the type, of a brown 

 colour, acuminate both posteriorly and anteriorly, rough 

 with small scales on the lirae which cross the thickened, 

 obliquely-angled ribs spirally, the last whorl attenuate 

 towards the base with a long (2-50 mm.) beak, bent back- 

 wards, the aperture is roundish, columella and interior 

 of the mouth pale violet, outer lip fimbriate, and with one 

 large varix just behind it. The shell is otherwise singu- 

 larly free from varices. 



A smaller example, which has not attained its full 



