90 Messrs. J. C. Melvill and 3. H. Ponsonby on 



7. Bxdiminus Layardi, sp. n. (PI. V. fig. 11.) 



B. testa impcrforata, solidiiiscula, Lnevi, ovato-pyramidali, apice 

 obtuso ; anfractibus octo, subvcntricosis, et ad suturas compressis, 

 flammis brunneis hie illic longitudiiialiter dcpictis ; apertura 

 oblonga, faucc pallida ; peristomate subespanso, solidiusculo, ad 

 marginem columcllarem late reflexo. 



Long. 12, lat. 6 mill. 



Hah Kobis {E. L. Layard), 



This seems to us to differ from B. BurchelU (Gray) in the 

 smaller size, want of umbilication, greater reflexion of colu- 

 mella, less ventricose whorls, and more vivid painting. Mr. 

 Layard remarks that one of his three specimens shows a rather 

 solid epiphragm in situ, which would seem to indicate cestiva- 

 tion at one period of the year. 



8. Bidiminus quisqualis, sp. n. (PI. V. fig. 10.) 



B. testa ovato-oblonga, obtecte umbilicata, candide nitente, pellu- 



cida, spira; suturis subimpressis, apice obtuso ; anfractibus sox, 

 ventricosulis ; apertura parva, oblouga, labro simplici, pauUo ad 

 basin marginis columcllaris reflexo. 

 Long. 7-25, lat. 3- 50 mill. 



Hah. Mocjambie [E. L. Layard). 



A small white, subpellucid, little species, with somewhat 

 of the aspect of a Stenogyra. 



9. BuUminus lamoensiSj sp. n. (PI. V. fig. 12.) 



B. testa oblongo-turrita, obtecte umbilicata, cornea, subopaca, apice 

 obtuso ; anfractibus octo longitudiualiter coufertim crasse obliqui- 

 striatis ; apertura fere oblonga, labro simplici. 



Long. 12, lat. 4-50 mill. 



Hah. Lamo, E. Africa {E. L. Layard). 

 Very like a Stenogyra, being a simply formed, somewhat 

 plain, turreted shell. 



10. Stenogyra Chapmani, sp. n. (PI. VI. fig. 3.) 



S. testa gracillima, tenui, Candida, aciculari, elougato-turrita : an- 

 fractibus novem, ad suturas gradatulis, binis ad apieem effusis, 

 longitudinaliter oblique striatis, ultimo oblongo, recto, columella 

 truncata ; apertura oblongo-ovata ; peristomate simplici, tenui. 



Long. 9-50, lat. 2-25 mill. 



Hah. Ovampo-land, collected by the late Mr. Chapman 

 [E. L. Layard). 



