mssoiDa!. 105 



var. minor. 

 6 Algiers ; coll. P. Joly, Esq. 



26. Rissoa inconspicua. 



Rissoa inconspicua. Alder, Ann. Mag. XIU, ISM, Northimherland. 

 4 Algiers ; coll. P. Joly, Esq. 



27. Rissoa angulata. 



Rissoa angulata, Mchwald, Nat. Skiz. Lithauen. 1S30 ; sect. Mohren- 

 sternia. 



1 Gaya [fossil] ; ex c. Herr Schwartz von Mohrenstern. 



28. Rissoa splendida. 



Rissoa splendida, EicTiivald, Nat. Hist. 1, 1S30, p. 219, Black Sea. 

 4 Theodosia, Black Sea ; ex c. C. F. Ancey, Esq. 



29. Rissoa (?) globulus. 



Rissoa globulus, Holler, Ind. Moll. Qroenl. 2842. 

 1 Greenland j ex " LimiDea." 

 Looks to me moi'e like a form of brackish- water Hydrobiince. 



Genus ALVANIA, Rlsso. 



Hist. Eur. Merid. IV, 1826, p. 140, type A. cimex, Lin. \_as Alv. europaa, 

 Bisso'], type restr. Or ay, P. Z. S. 1847 [_as A. calathi sous']; sect. ^= Man- 

 zonia, Brusina, Ckieregh. Conch. 1870, type Turho zetlandicus, Mtq. 

 [= Turhoella, Leach, ms.. Gray, P. Z. 8. 1847] ; sect. = Plagiostyla P. 

 Fischer, Fonds de la Mer, et Act. Soc. Lin. Bord. XXIX, 1869 type 

 Missoa lactea, Mich. 



1. Alvania adelse. 



Rissoa adelfe, d'Orbigny. 



2 Steinabrunn [fossil] ; coll. Herr Schwartz von Mohrenstern. 



