Manchester Memoirs, Vol xlii. (1898), No, 4. 17 



coster is ventricosiilis, apud siituras astrictis, longitudinaliter 

 costatiSy penultimo et ultimo ad octo costis, rotundatis, 

 incrassatis, spiraliter undiqiie arete costulatis, interstitiis 

 spiraliter granidoso-liratis, ultimo reetirostrato, canali longa, 

 apertura ovata, labro vix incrassato, intus spiraliter plicato, 

 columella septemplicata. 



Long. 34, lat. 10*50 mm. spec. maj. 



Hab. Muscat, Arabia, 15 fathoms mud and sand. 



A small species, but one that has attained its full 

 growth, being a \.yi^\Q'd\Fustis in form,attenuately lanceolate, 

 nine-whorled, two of them are apical, smooth, brown, the 

 rest constricted at the sutures, ventricose, longitudinally 

 thickly ribbed, ribs about eight on the two last whorls, 

 these ribs are spirally crossed by revolving riblets, or raised 

 lines, the interstices being granuloso-lirate, the colour is 

 cinnamon brown, slightly darker on the ribs, the mouth is 

 ovate, canal straight, prolonged, lip within plicately striate, 

 the columella is seven plaited, these plaits are the con- 

 tinuation of the spiral riblets. 



Two species, similar, but one slightly smaller than the 

 other, say long. 32, lat. 9*50. Also three or four, in young 

 condition, have been subsequently (1898) procured from 

 the same locality. 



BULLIA CEROPLASTA, Sp. nov. 

 (PI. 2, f 13.) 



B. testa parvay fusiformi, tenui, cerea, paiillum nitente, 

 Icevissima, anfractibus septem, quorum duobus apicalibus, 

 perlcevibus, mammillatis, cceteris longitudinaliter costulatis, 

 costis rectis, ultimo afifractu cceteros longitudine excequante, 

 costis infra medium evanidis, ad basim spiraliter multi-sul- 

 catis, sulculis profundis, basi subtruncata^ apertura ovata, 

 labro paullum effiiso, parum incrassato. 



Long. 12, lat. 4*50 mm. 



Hab. Mekran Coast. 



