20 
Dk. v. Linstow. 
Cosmocephalus papillosus Molin in Larus canus. 
Sclerostomum cy atho stomum Dies, in Larus fuscus. 
Tricho soma contortum Crepl. in TJria grylle, Larus canus , Aegia- 
lites hiaticula. 
Trichosoma brevicolle Mud. in Harelda glacialis , Oidemia fusca , 
Mergus serrator. 
Trichosoma curvica uda Duj. in Hirundo rustica. 
Ancry acanthus long icornis Hempr. u. Ehrenb. in Tringa alpina. 
Eustr ongylus gigas Dies, in Phoca vitulina. 
B. Freilebende Nematoden. 
Aphelenchus nivalis Aurivillius. 
D orylaimus Langii Cobb. 
Tylenchus gracilis Cobb. 
Spiiophora impatiens Cobb. 
II. Acantliocephalen. 
E chinorhynchus strumosus Mud. in Trichechus rosmarus, Phoca 
foetida, Phoca groenlandica, Halichoerus grypus , Phoca vitulina. 
Echinorhy nclius turb in eil a Dies, in Hyperoodon rostratuni, 
Malaenoptera borealis, Balaenoptera musculus. 
E chinorhynchus porrigens Mud. in Balaena mysticetus, Balaen- 
optera borealis. 
E chinorhynchus capitatus v. Linst ow in Globiocephalus svineval. 
E chinorhynchus br evicollis Malm, in Balaenoptera borealis. 
Echinorhy nchus Hirundinum Mud. in Hirundo rustica. 
Echinorhy nclius l ong icollis Villot in Strepsilas interpres. 
Echinorhy nchus inflatus Crepl. in Tringa alpina, Aegialiles 
hiaticula. 
Echinorhynchus lanceolatus v. Linstow in Aegialites hiaticula. 
Echinorhynchus macr acanthus Bremser in Charadrius pluvialis. 
Echinorhynchus er assicollis Villot in Calidris arenaria. 
Echinorhynchus striatus Goeze in Oygnus olor. 
Echinorhynchus polymorphus Bremser in Cygnus olor, Cygnus 
musicus, Somateria mollissima, Harelda glacialis , Oidemia fusca, Anas pene- 
lope, Mergus serrator, Anas acuta. 
Echinorhynchus hystrix Brems, in Mergus serrator, Podiceps 
rubricollis, Uria grylle, Carbo cristatus. 
Echinorhynchus canipylurus Nitz sch in Lestris catarrhades. 
