RISSOIDE, 105. 
var. minor. 
6 Algiers; coll, P. Joly, Esq. 
26. Rissoa inconspicua. 
Rissoa inconspicua, Alder, Ann. Mag. XIII, 1844, Northumberland. 
4 Algiers; coll. P. Joly, Esq. 
27. Rissoa angulata. 
Rissoa angulata, Hichwald, Nat. Skiz. Lithauen. 1830; sect. Mohren- 
sternia. 
1 Gaya [fossil] ; ex c. Herr Schwartz von Mohrenstern. 
28. Rissoa splendida. 
Rissoz splendida, Hichwald, Nat. Hist. I, 1830, p. 219, Black Sea. 
4, Theodosia, Black Sea; ex c. C. F. Ancey, Esq. 
1 
29, Rissoa (?) globulus. 
Rissoa globulus, Méller, Ind. Moll. Groenl, 1842. 
1 Greenland; ex “ Linnea.” 
Looks to me more like a form of brackish-water Hydrobiina, 
Genus ALVANTIA, Risso. 
Hist. Hur. Mérid. IV, 1826, p. 140, type A. cimex, Lin. [as Alv. europea, 
Risso), type restr. Gray, P. Z. 8. 1847 (as A. calathiscus]; sect. = Man- 
zonia, Brusina, Chieregh. Conch. 1870, type Turbo zetlandicus, Mtg. 
[= Turboella, Leach, ms., Gray, P. Z. 8.1847]; sect. = Plagiostyla, P. 
Fischer, Fonds de la Mer, et Act. Soc. Lin. Bord. XXIX, 1869, type 
Rissoa lactea, Mich. 
1. Alvania adele. 
Rissoa adele, d’ Orbigny. 
2 Steinabrunn (fossil) ; coll, Herr Schwartz von Mohrenstern, 
