86 lussoiD^. 



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

 cimen. 



50. Bissoina hungerfordiana. 



Eissoina hungerfordiann, Nevill, Weinkanff, Cunch.-Cah. II, ISSl, pi. 15 A, 

 fly. 9, Hong-Kong ; lung. 5\, diain.2 mil. 



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



51. Rissoina, n. sp. 



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



52. Rissoina, u. sp. 



4 Kesb [Persian Gulf] j coll. W. T. Blanford, Esq. 



53. Rissoina erythrgea. 



Rissoina erytliraea, Thilippi, Zeits. Mai. 1851, p. 93, Aden, long. 3 3, dinm. 

 1-2 mil. ; fide iichwnrtz, from Red Sea, Steward's I., Sandwich I, ami Mauri- 

 tius ; fide Mm. Godef. Cat. V = B. cerilhiiformis, Dkr. 



60 Nicobars, Mauritius [4i, \\], Andamans [3i, l-J], Annesli-y Bay, 

 RoweiaL, and Ceylon ; coll. W. T. Blanford, G. Nevill, J. Wood- 

 Mason, and J. B. Baxter, Esqrs. 

 3 Upolu ; ex c. Mus. Godeff roy. 



54. Rissoina blanfordiana. 



Rissoina blanfordiana, O. Nevill, J. A. S. B. Sept. ISSl, pi. VI, fig. 16, Zonlla ; 

 long. 9\,diam.3\ m. ;=^R, Jivkelii, Weinkauff, Conch.-Cab. II, Dec. ISSl, 

 Mai<saua. 



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

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



Bissoina jicJielii is the more perfect and adult form of the 

 somewhat " depauperate" specimen from which I described IL 

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



55. Rissoina clathrata. 



Rissoina clatbrata, A. Adams, P. Zool. 8.1S51, Bohol ; fide ScJuvartz, long. 12, 

 diam. 4.5 mil., alsofom Australia; Sues fidd AicAndreiv. 



