40 Moll 
VIII. Mollusca. 
[1906] 
Enemies. 
Swans and ducks eating Anodunta ; 
Rope. 
Swans eat Anodonta cygnea ; Blun- 
dell. 
Slug- killed by crawling on cement; 
Woodward, 3. 
Defensive Processes. 
Nematocysts of F.olida? ; Cu6not. 
Economics. 
Oyster beds of Charente-Infdrieure ; 
Guerin, 1, 2. 
Oyster fisheries and culture in 
Louisiana ; Cary, 1, 2, 3. 
Oyster beds, Macta R. Algeria, killed 
off annually by floods ; Bounhiol. 
Oyster beds invaded by an Alga 
(Colpomenia) ; Fabre-Domergue. 
Pearl and pearl-shell fisheries of the 
Persian Gulf; Gaskin & Townsend in 
Melvin & Standen, 1 (803-6). 
Pearl-fishery at Tliana Creek, W. 
India ; Sale. 
Pearl fishery of Ceylon ; Homell, 2. 
Pearl-shell fisheries, Paumotu and 
Garnbier Is. ; Seurat, 1, 2, 3. 
Pearl and pearl-shell fisheries of 
Tuamotu ; Regelsperger. 
Placunci pearl fishery ; Hornell, 1. 
Scallops and clams in the Chandeleur 
Island regions, Louisiana ; Spaulding. 
Mollusca as bait ; Lilleskare, 1, 2. 
Snails destroy caterpillars ; Sclioepf. 
Drymaeus dormani, destroyer of 
fungus injurious to citrus groves ; 
Anon, 4. 
Slugs eating potatoes ; Swanton, 3. 
Destruction of slugs ; Du Buysson. 
Marine shells in Gallo-Roman ruins ; 
P6rot. 
Variation and Teratology. 
Variation in turbinate shells ; Malard. 
Variation in radula of Buccinidoe ; 
Lebour. 
Albinism ; Honigmann, 4. 
Albinism, Planorbia ; Roth, 7. 
Albinism, Planorbia ; Ziegeler, 4. 
Supposed Albinism, Planorbia ; 
Kohler, 3. 
White form of Ilelieigona lapicida ; 
Jackson, 2. 
Teratology ; Borissiak, 3. 
Teratology in eggs of PliiUne ; 
Schimkewitsoh. 
Teratology, Neptunea cintiqua ; Smith, 
E. A., 4. 
Pathological teratology, Sphcerium, 
solididum ; Sterki, 4. 
Reversal of direction of coiling of 
Gastropod shell, with lists of known 
instances ; Ancey, 1. 
Sinistral Ilelieigona arbuatorum ; 
Shaw, 2. 
Sinistral Ilygroviia rufeaeena ; Shaw, 1. 
Sinistral Limncea peregra ; Taylor, 2. 
Sinistral Limncea peregra ; Trech- 
mann. 
Phylogeny and Taxonomy. 
Application of De Vries’ mutation 
theory to the Mollusca ; Baker, 1. 
“ Genera ” and “ species” ; Dacqu6, 1. 
“Species ” ; Dacqud, 2. 
“Subspecies,” “mutations,” and 
“ forms ” ; Cockerell, 5. 
Neritidae ; Petho (109-32). 
Races of Volutilithea pclroaua ; 
Smith, B. 
Cerion ; Plate. 
Lamellibranchiata of the Frombach- 
tuffe ; Waagen, 1. 
Convergence in Triassic Ammonites ; 
Diener, 2. 
VARIATION AND AETIOLOGY. 
2223 
General. 
Review of recent work ; Simroth, 6. 
Variation and Mutation ; Lang. 
DISTRIBUTION. 2227 
(a) Recent. 
Summary of recent faunistic work 
relating to Gastropoda ; Simroth, 7. 
