366 MESSRS. MELVILL A.ND STANDEN ON [June 18, 



EissoA (Manzonia) peteonella, sp. n. (Plate XXII. fig. 9.) 

 Bi, testa minutissima, jjagodceformi, solidula, alba ; anfractibus 

 5-6, quorum apicalis crassus, alho-vitreus, raamillatus, cceteris 

 crassicostatis, apud suturas niultum impressis, costis nodulosis, 

 prominuUs, albis, interstitiis planatis ; apertura circularly 

 peristomate inerassato, continuo. 

 Long. 2, lat. 1 mm. 

 Hah. Karachi. 



A very minute, elegant, white pagoda-shaped species, with 

 angled nodulous ribs, sutures much impressed, peristome thickened, 

 continuous, mouth circular. "We have provisionally located it in 

 the subgenus or section Manzonia Brus., of which the European 

 B. costata Ads. is the type. 



EissoA (Onoba) delicata Phil. 

 P.G. Bushire. 



I. Karachi; also reported from Bombay {Bev. S. D. Fair- 

 hank), not collected by Abercrombie. 



E.ISSOA (Onoba) egeegta a. Ad. 



P.G. Kishm Island. 5 fathoms, mud. 



Very beautiful, the whorls delicately longitudinally multi- 

 plicate. 



EissoA (Alvania) alveata, sp. n. (Plate XXII. fig. 10.) 

 E. testa ovato-ohlonga, solida, alho-calcarea • anfractibus quinque, 

 apicalibus duobus Icevibus, subpellucidis, inclusis, cceteris tribus 

 angidatim, proynimdis, apud suturas imj)ressis, spiraliter 

 fortiter hi- in tdtimis quinquecostatis, undique alveolatis et 

 decussatis, interstitiis quadratis, profundis ; apertura rotunda ; 

 labro crasso, alho, extus crenulato ; columella incrassata, peris- 

 tomate continuo. 

 Long. 3, lat. 1*25 mm. 



Rah. Angrias Bank, "W.S.W, of Bombay {Capt. Tindall). 

 Also recorded from Quilon, further south, on the Malabar Coast. 



A stout, incrassate Alvania, the upper two (or sometimes three) 

 whorls simple and smoothish, the remainder ruggedly angled, 

 uniformly cancellate, the interstices being deep and square ; outer 

 lip very thickened. Of the same character as the W. Indian 

 A. didyma Watson, or the Australian A. austrcdis Sowb. 



EissoA (Alyania) inteefossa Nevill. 

 I. Indian Coast (O. NevilT). 



EissoA (Alvania) mahimensis Melv. 



I. Bombay (Abercronihie). 



In Gr. Nevill's ' Hand-hst of the Mollusca of the Indian 

 Museum, Calcutta," p. 112, an Alvania sp. is marked with a var. 

 h. rohusta Nevill, from Bombay, an unique instance, perhaps, of 

 the name of a variety being gazetted before that of its type-form. 



The nearest ally of this species is E. interfossa Nevill. 



