30 Verm. 
XV. VERMES. 
Amphibians. 
2 spp. of Distomum in frogs ; Bensley. 
Fish. 
Occurrence and distribution of 45 cestode-parasites in fish ; Linton (2) : 
of cestode larva); Linton (1). 
Fresh-water fish: — of Rhine, near Basel, (29 species), — 18 species of 
trematodcs, the influence of the food of the host, of temperature, season, 
and of locality of the host on their occurrence; the predominance of 
different species of parasites in different hosts; the proportion of fish 
infested and the organs attacked ; viability of parasite outside its host — ; 
Hausmann: of L. Balaton, (14 spp. of fish), — 7 Cestodes, 2 Trematodcs, 
5 Nematodes, 2 Echinorhynchus , and the leech Icthyobdella fasciata Dies. — 
117 specimens belonging to the 14 different species examined and all except 
the Carp found to be infested. Effects of parasites on hosts ; Ratz (2). 
Anatomy of leeches of Swedish fish (5 genera) ; Johansson (1). 
Dactylocotyle , a leech-like trcmatode, on gills of ling, off' Scotland ; Scott. 
A new Cestode from Genypterus in Chili ; Riggenbach. A new Trema- 
tode from Triturus of Japan ; Sturges. Nematodes of African fish ; Setti. 
Arthropods. 
Insecta : Gordius and Mermis ; v. Linstow. 
Crustacea : Nereids commensal on Hermit Crabs ; Harrington. Leeches 
in branchial cavity of Spatha and Paratelphusa ; Blanchard (1) & (4). 
Molluscs. 
Gastropods: of fresh- water round Pisa, — Trematodes; Sonsino (1). 
Lamellibranchs : with Zh'stoma-parasites infested by Myxospores living 
inside their shells; L£ger. Cercarice of Brachycodium ; Giard (3) & (4). 
A n. sp. of Halacobdella in mantle-cavity of Mactra , Japan ; Takahura. 
“ Vermes .” 
Planarians preying upon earthworms and other planarians ; Steel (1) 
p. 109. 
Plants. 
Earthworms on plants from W. Indies ; Michaelsen. 
Enchytrseids as plant pests; Friend (1); Stoklasa. 
The disease of beet-root caused by Heterodera schachtii ; Bos. 
IV. SYSTEMATIC. 
ANNELIDA. 
A. GEPHYREA. 
A. Inermia. 
Physcosoma , n. n. for Phymosoma , auct., on account of the latter name 
being already appropriated ; Selenka, Zool. Anz. xx, p. 460, 
