58 THE NAUTILUS. 
Vill INDEX TO CONCHOLOGIST’S EXCHANGE. 
Unio Buckleyi; U. Buddianus; U. Blandingianus; U. 
coruscus, 
Unio cacao Lea; Unio Cunninghami pace Wright (n. 
Spa) sm. floridensis Lea; U. Jayanus Lea, 
Unio eranulatus Lea in Fla., : : 
Unio Jewettii ; U. Kleinianus ; U. -Tepidus U. minor ; 
U. modioliformis, 
Unio Liebii in Lake Erie, : 
Unio papyracea Gould in Lake Ashby, Fla., : 
Unio monroensis Lea; U. fuscatus Lea ; U. paludico- 
lus Gld., : : : : 
Valvata tricarinata Say and V. bicarinata Lea, 
Valvata mergella Westerlund, only a striate variety of 
V. sincera Say, . : : 
Venus mercenaria Linn., 
Vivipara intertexta; V. ‘subpurpurea ; ‘NG contectoides, 
Voluta Gouldiana, found in 150 to 200 fathoms ee ey 
Rock Light, Fla., 2 
Zirpheea crispata Linn., 
INDEX TO CONTRIBUTORS AND TITLES. 
. IT, 95, 105 
- TI, 105 
I, tae 
II, 112 
I, 26 
I, 81 
I, 27 
II, 80 
Ia 
II, 102 
II, 65 
II, 9, 10 
II, 54 
Titles in brackets are the general subjects of notes placed under 
“ Correspondence.” 
Ancey, C. F. Diagnoses of a few subgenera in Helici- 
dee, -. 
Descriptions of new genera or subgenera of Hel- 
icide, : ; : I, 53, 64, 75 
[Notes on new subgenera, and some American 
Helices | 
A Catalogue of the Bulimini found in Central 
Asia, 
On the generic name ofa remarkable bivalve shell 
found in the Congo, 
Description of North American shells, 
Baker, F.C. [A collecting trip to Onset Bay, Mass. ], 
Be: auchamp, Rev. Wm. M. Erosion of fresh water 
shells, 
Notes on Ammenena Shells, 
I, 20 
, II, 22, 38 
I, 54 
1 Be 
II, 22 
II, 53, 79 
II, 119 
I, 49 
II, 19 
