GEOGRAPHICAL DISTRIBUTION USE BY MAN. Moll. 61 
list o£ titles, antea : — Bellardi, Cornet, Dollfuss & Dautzenberg, 
Gioli, Hutton, Lomnicki, Pollonera, Rutot, Sacco (2), Yincent. 
For Bibliography see Marcou. 
Historical Changes. 
Zonites albanicus was found abundantly in one locality in California 
30 years ago, but not since, probably the progeny of an importation ; 
Tryon, (2) p. 135. 
An important paper on the subfossil shells of the United States and 
their relation to geological and climatic changes has been published by 
Cooper. . 
Littorina litorea , probably introduced into North America about 30 
years back ; Ganong. 
Helix aspersa has appeared on the Table Mountain, Cape Town ; 
Borcherding. 
Two specimens of Bulimus ( Orphnus ) larguillerti imported from 
Brazil with dye-wood ; Bcettger (1). 
Modiola tulipa seems to be extending northwards on the U. S. coast ; 
Ford (1). 
Transportation of Mytilus gcilloprovincialis by ships (see p. 45). 
Account of attempts to introduce Venus mercenaria into the Mersey 
and Dee ; Moore. 
Failure of two attempts to transplant American oysters in the Little 
Belt ; Tiiamm (2). 
Drcisscnsia cochleata , Kiokx, not now found in Belgium, occurs in the 
brackish wators of the Arnstcl ; Pelseneer (1). 
Use by Man. 
The Mollusca of France in their economic relations are briefly treated 
by Brocchi, and ostreiculture somewhat more fully. 
The utilitarian aspect of North American Mollusks is treated by 
Ingersoll (1). 
Arcachon has 4000 hectares (nearly 10,000 acres) of oyster beds ; 
annual value 8 or 10 million fcs. ; 1884-85, 178,359,000 were exported ; 
Simonin. 
Mode of taking the eggs and impregnating them is described by 
Ryder ; in addition to a general resume of our knowledge on the rate of 
growth, food, local variations, and other matters. A method of collect- 
ing spat in baskets ready for transport described ; id. (2). 
Report on oyster culture in Connecticut, vide p. 27, antea. 
Cockle supply of North Uist; Rep. Fish. Scot, iv, App. G, p. 290. 
Transplantation and fishery of Unio margaritiferus , Japp. 
Purpura lapillus used as indelible writing fluid ; Ingersoll, p. G99. 
Scallop fishery ; id., (2). 
Notes on certain Mollusks used as bait ; McIntosh. 
Mytilus collected in quantities at Conway and boiled to get seed 
pearls; Darbishire, p. 241. 
' Uses of shells by the Papuans enumerated by Reinhardt (2). 
