Chaster — On the Mollusca ohtained hij the E.I. A. Cruises. 15 



able, take place after adult age is reached. The condition is 

 met with in Galeodma carinata, Da Costa (= Rissoa striatula 

 Montagu) ; Alvcmia ccmcellata, Da Costa ; A. reticulata, Mon- 

 tagu, and its var. calatlius ; A. punctura, Montagu ; A. alyssi- 

 cola, Forhes, Rissoa parva, Da Costa ; and R. inconspicua, 

 Alder. The variety distorta, Marshall of Onola striata , Adams 

 belongs to the same category. 



Var. DivEESA, Jeffreys. 

 Log 28. 



A. CAJTCEL1A.TA, Da Costa, sp. {Turlo). 



Station VIII. Logs 11, 30, 33, 34. 



Maitzonia costata, J. Adams, sp. {Turlo). 



Station VIII. Logs 35, 40, [50], 62, E. The name Flem- 

 ingia, proposed by Jeffreys in 1884 for the Rissoa %etlandica 

 group, being pre-occupied by De Koninck in 1881, we must 

 adopt the name Man%onia, Brusina, 1890. 



M. zetlandica, Montagu, sp. {Turlo). 

 Logs 9, 33. 



CiKGTJLA SEMisTEiATA, Montagu, sp. {Turlo). 



stations VI., VIII. Logs 28, 35, [40], 62, E. 



C. OBTUSA, Cantraine, sp. {Rissoa) = Rissoa soluta, auct. non. Philippi. 

 Depth, 0-110 fathoms. The shell which the Marquis of 

 Monterosato identifies as Philippi' s Rissoa soluta agrees far 

 more closely with the original description and figure than does 

 our shell. It belongs to the Setia group, being quite smooth 

 and glossy, instead of being spirally striated as is the species 

 found in our seas. 



CiNGrLLA TEiEASciATA, J. Adams, sp. {Turlo) = Rissoa cingillus, auct. 

 Logs 33, 35, [39], A, B. 



Setia etjlgida, J. Adams, sp. {Helix). 



Logs 25, 64, E. 

 Cekatia PEOxnrA, Alder, sp. {Rissoa). 



Logs 12, 25, 28, 30, 40, 42; depth, 5-808 fathoms. The 

 radula of this species is so remarkable as to render it worthy of 

 generic distinction on that ground alone. 

 Htala viteea, Montagu, sp. {Turlo). 



Stations VI., VIL Logs 3, 9, 11, 12, 21, 25, 26, 28, [33], 

 42, 55, 63, A ; depth, 5-808 fathoms. 



