86 RISSOIDiE. 



The figured type seems to me that of a not quite adalt spe- 

 cimen. 



50. Rissoina hunger f or di ana. 



Eissoina hungerfordiaiia, Nevill, WeinJcauff, Conch.- Cab. II, 1881, pL 15 A, 

 Jig. 9, Song-Kong ; long. 5\, diam. 2 mil. 



1 Hong-Kong [type] ; coll. R. Hungerford, Esq. 



51. Rissoina, n. sp. 



1 Gwadar ; coll. W. T. Blanford, Esq. 



52. Rissoina, n. sp. 



4 Kesh [Persian Gulf] -, coll. W. T. Blanford, Esq. 



53. Rissoina erythrsea. 



Rissoina erythrsea, PMlippi, Zeits. Mai. 1851, p. 93, Aden, long. 33, diam. 

 1-2 mil. ; fide iSchwurtz, fi om lied Sea, Steward's I., Sandioivh I. and Mauri- 

 tius ; fide Mus. Godef. Cat. V= JB. cerilhiiformia, Dkr. 



60 Nicobars, Mauritius [4i \\\ Andamans [3i, 1^], Annesley Bay, 

 Roweiah, and Ceylon ; coll. W. T. Blanford, G. Nevill, J. Woud- 

 Mason, and J. B. Baxter, Ksqrs. 

 3 Upolu; ex c. Mus. Godeffroy. 



54. Rissoina blanfordiana. 



Rissoina blanfordiana, O. Nevill, J. A. 8. B. Sept. 1881, pi. VI, fig. 16, Zoulla ; 

 h'Tig. 91, diam. 3^ m. ;=^R. Jickelii, Weinkaiiff^ ConcJi.-Cab. II, Dec. 1881, 

 3Iassaua. 



1 Zoulla, Red Sea [type M. blanfordiana] ; coll. W. T. Blanford, Esq. 

 1 Massaua [typical E. jickelii] ; ex c. Dr. H. C. Weinkauff. 



Bissolnajid-elii is the more perfect and adult form of the 

 somewhat " depauperate" specimen from which I described li. 

 llavfordlana. Pearl-like nodules on the points of intersection. 



55. Rissoina clathrata. 



Bissoina clathrata, A. Adams, F. Zuol. iS.18dl, Bohol ; fide Sclnoarlz, lony. 12, 

 diam. 4 5 mil., also from Australia ; Suez fide JIcAndreiv. 



