368 MESSRS. MELVILL AND STAIfDEK ON [June 18, 



between the ribs, the outer lip being extremely incrassate, may 

 serve to distinguish this species. It has only occurred in small 

 quantity. 



EissoiNA (Eissolina) plicatula Gould. 

 P.G-. Kishm I. (W. T. Blanford). 

 I. Bombay. Old record. 



EissoiNA (Eissolina) plicaxa Ad. 



Var. heriheloti Aud. 



Var. scalarina A. Ad. 

 P.G. Kharg (W. 2\ Blanford). Kishm I. (var. hertheloti : 

 W. T. B.). 

 I. Karachi. Common. 



EissoiKA (EissoLiisrA) PSEUDo-scALARis, sp. n. (Plate XXII. 

 fig. 13.) 



E. testa minuta, fusiformi^ solida, nitida, Icevi, albida ; anfractibus 

 octo, quorum apicales 3| attenuati, apice ipso brunneo, omnibus 

 vitreis, cceteris albo-calcareis, longitudinaliter paueioostatis, costis 

 lamellarum instar, ultimo in anfractu circa undecim, prope ante 

 basim evanidis, basi sub lente minutissime spiraliter striata; 

 apertura rotunda ; peristomate scalariformi incrassato continuo, 

 sub lente striatulo ; columella obliqua. 

 Long. 3, lat. 1 mm. 



Hab. Gulf of Oman, lat. 24° 25' N., long. 57° 59' E. 37 

 fathoms. 



A very minute scalaroid species, solid, shining, with regular 

 straight lamelliform ribs ; the protoconch extends to three and a 

 half whorls, is vitreous and smooth, and very atteniiate ; aperture 

 round; the very delicately striate peristome thickened, continuous. 

 Allied, but not very nearly, to P. gradata d'Orb., a West Indian 

 species. 



EissousTA (Eissolina) eissoi Aud. 

 I. Karachi. 



EissoiNA (Eissolina) suBruNicuLATA G. Nevill. 

 P.G. Kishm I. (TF. T. Blanford). 

 M.C. Gwadur {W. T. Blanford). 



EissoiNA (Phosinella) olatheata Ad. 



P.G. Lin jah Anchorage, 5 fathoms. Kishm I. {W. T. Blan- 

 ford). 



M.C. Gvvadur(lF. r. 5.). 



I. Karachi. Bombay (Abercrombie). 



EissoiNA (Phosinella) pascba.lis, sp. n. (Plate XXII. fig. 12.) 



E. testa oblonga, delicata, Candida, paullum. entente ; anfractibus 



probabiliter 7-8, apicalibus ....?, cceteris gradatulis, ad suturas 



impressis, omnino arctissime et pidcherrime sub lente cancellatis, 



