GEOGRAPHICAL DISTRIBUTION. 
Moll 49 
A damsiella ; no new species ; Fischer & Crosse. Helix verrilli , n. sp. ; 
Ancey, (7) p. 63. 
Central America. Pyrgulopsis 1 4 new species ; Ancey, (1) pp. 194-201. 
27 . Caribbean Region. 
Antilles. Colobostylus 4 n. g., for 25 species of Cyclostomatidce ; Crosse 
& Fischer (3). 
Dominica. 34 species, 1 perhaps new ; Smith (3). 
Haiti . 12 new species; Maltzan (1). 
VII.— NEARCTIC ZONE. 
28 . Atlanto- American Region. 
North America. List of Cyclostomatidce ; Kobelt, (6) pp. 336-338. 
Hyalina sterlcii , n. sp ; Dale (4). 
Indian Territory. List of species (1 new) ; Simpson (9). 
Colorado. Physa elliplica ; Cockerell, T. D. A. (10). See also id. 
<4, 12). 
• Nebraska. Succinea lincata , Binney ; Simpson (2). 
loioa. Margaritana hildrethiana in large numbers ; SillMEK. 
Minnesota. 32 species; Grant. 89 species from Winona county ; 
. Holzinger. 
Michigan . Planorbis multivalvis, Case, and P. truncatus , Miles, redis- 
covered ; Walker. 
Illinois. 14 Strepomatidce , Hincrley(2). 96 species, none new ; Marsh. 
Missouri , Ozark Region. TJnio ozarkensis , U. brevicidus ; Call (1). 
Ohio. 11 Pupae ; Sterki (2). 
New York. Notes on Unio spp., Bythhua tentacidata, CarycMum 
exiguum , &c. ; Beauchamp (2). 
' Philadelphia . Notes on a few species; Ford (2, 3). 
Florida. Carychium exiguum, Say, new to U.S. A.; Simpson (3). . Unio , 
11 new species; Wright, B. H. (2). Unionidce catalogued ; id. (1). 
Bermuda. Descriptions of 4 snails ; Pilsiiby (4). 
29 . Californian Region. 
Western States. Popular account of Mollusc a ; Keep. 
Calif ornm. Cooper. 
Marine Mollusca. 
Oceanic Areas. 
General observations on distribution of marine forms ; Llerena. 
Discussion of deep-sea forms of the American coast, with figures of the 
most important types ; Agassiz; Dall (1). See also Marshall, 
Richters. 
1888. [vol. xxv.] d 8 
