BIOLOGICAL. 
Verm . 27 
d. Amphibians . 
Cestodes, n. spp. of Icthyotcenia ; Fuhrmann (75). 
A Distomum in muscle of frog j Schellenberg. 
e. Fish. 
Fish parasites and diseases caused by them ; Linton. Freshwater fish 
of S. America, — 3 new Cestodes ; Riggenbach (188) : of Gt. Lakes of 
N. America, histological relations of 20 species of Trematodes, Cestodes 
Acanthocephala and Nematodes in 102 fish; Ward (259). Bothriocephalus 
and Distomum in E. European fish; Schroder (213 & 214), Babes. 
2 Distomum parasites of freshwater fish ; MacCallum. 2 Cestodes in 
Centrolophus ; Ariola. 7 species of Trematodes ectoparasitic on fish of 
Mediterranean ; Parona & Perugia : on fish of U. S. A. Atlantic coast ; 
Goto. 
Nematodes and larvre in fish ; Hamann (91) Nos. 1 & 2, v. Linstow. 
f. Ascidians. 
A Syllis in mantle-cavity of a Ascidia mentata ; Hornell (101). 
g. Molluscs. 
Gastropods : Several species serving as intermediate hosts of liver- 
fluke ; Fielder. Chcelogaster vermicularis commensal on Idmnata stag- 
nalis ; Bailey. 
Lamellibranchs: Donax, — sporocyst and cercaria of a digenetic Trematode 
causing castration j Pelseneer. 
h. Arthropoda . 
Insects : Gordius aquations in grub of Saturnia in Russia ; ROmeR (191). 
2 species of Gordius in Feronia ; Janda. 
Crustaceans : Polychaet in gill-cavity of Gorgon ; Bidenkap. Marine 
Decapods serving as intermediate hosts for Tetrarhynchus ruficollis ; 
Vaullegeard. Freshwater Decapods : adult of Stichocotyle nephropis 
found in the American Lobster ; Nickerson. Isopods : a Rotifer ecto- 
parasitic on Ligia ; Nemec. 
i. Vermes • 
Polychsetes: with PolynoeS commensal on them ; Hornell (101). Ortho - 
nectidcB in a Vterocirrus ; Saint- Joseph, p. 226. 
Leeches : Dendrocoelum lacteum in Aulostomum gulo ; Bolsius (26). 
Nemertines : a Planarian commensal on a Cerebra lulus; Yerrill. 
