TREMATODA. 
Verm. 49 
TREMATODA . 
[The following memoirs relate to Trematoda : — Barbagallo & Drago 
(16), Boutan (45), Brunet (60), Cohn (93 & 94), Drago (124), Dubois 
(128), Duffek (129), Galli Valerio (148), Gronkowski (169), Haswell 
(175), Hofer (189), Jameson (199), Janicki (200), Johnston (204), 
Lazarus-Barlow & Douglas (235), Linstow (242), Maclaren (256), 
Marcinowski (259), Marrow (262), Monticelli (295), Osborn (315-319), 
Parona & Monticelli (325 & 326), Petrie (331), Pratt (346), RAtz 
(355 & 356), Reuss (361), Shipley (394), Stafford (406), Stossich (416), 
Voigt (439), Wacke (442), Ward (443), Warren (444). 
General Biology. 
Anatomy and development of the cercarise and sporocysts of Distomum 
duplicatum , Reuss (361). 
Histology and anatomy, Gro.nko\Vski (169). — Anatomy of Opisthorchis y 
RAtz (355). —Anatomy and development of Distomum, cirrigerum , Warren 
(444). 
Histology and anatomy of ectoparasitic forms, Wacke (442). 
Anatomy and development of sporocysts in Mytilus latus , unnamed sp. 
near Distomum fasciatum, Haswell (175). 
Histology, skin of Trematodes, Maclaren (256). 
Inferior oesophageal ganglion in Distoma hepaticum , Marcinowski (259). 
Relation between chromatin and the nucleoli during segmentation of 
the egg of Gyrodactylus elegans , Janicki (200). 
Human parasites with parts attacked, and geographical distribution, 
Ward (443). 
Life-history of Bilharzia hcematobia , Lazarus-Barlow & Douglas (235). 
Origin of pearls, Boutan (45). — Pearls originated by Distoma somaterice 
cercarise, Jameson (199). — Pearls resulting from a distome in Mytilus 
galloprovincialis , Dubois (128). 
Distribution. 
Lake of Plon, fish parasites, Voigt (439). 
Hungary, n. gen. and spp., RAtz (356). 
Genoa, parasitic sp. in the branchiae of Naucrates ductor , Parona & 
Monticelli (325 & 326). 
Trieste, in Centropristis hepatus n. sp., Stossich, Arch, parasit. vii, 
pp. 373-376 (416). 
Sicily, fish parasites, Barbagallo & Drago (16). 
Tunis, occurrence of Distoma hepaticum , Brunet (60). 
Zanzibar, Bilharzia hcematobia , spontaneous cure of the disease, Petrie 
(331). 
Java, n. gen. and spp., Cohn (94). 
Australia, n. sp. from the sawfish shark Pristiophorus cirratus, Johnston 
(204). 
America, n. sp. from Amblystoma punctatum, Osborn (315). 
Canada, n. g. and sp. from Urodela, Stafford (406). 
United States (Michigan) n. g. and n. sp. of fluke with two ventral 
suckers, Osborn (319). 
Lake Chautauqua, N. Y., n. sp. in the crayfish and certain fishes, Osborn 
(318). 
Paraguay, n. sp., Monticelli (295). 
Chili, n. sp. ectoparasite, Wacke (442). 
1903. [Vol. XL.] f 4 
