IIELMINTHOLOGY HELMINTHES TREMATODES. 467 



urine, saliva, aqueous humour, nor in the crystalline lens, 

 the bile, and the serous fluid from the cerebral or spinal 

 cavities. Just as little was this sort of vermiculi found 

 in the chyle, in the lymph, and in the pus of wounds. In 

 one of the dogs affected with hrematozoa these minute 

 nematoda lived year after year within the sanguineous 

 vascular system, without quitting it like the Filariee in the 

 blood of frogs. 



HELMINTHES ACANTHOCEPHALI. 



Bellingham (Annals Nat. Hist. v. 13, 1844, p. 254) 

 enumerates fifteen Echinorhynchi, parasitic in various Irish 

 Mammalia, Birds, and Fishes; amongst which are five 

 doubtful species from the rectum of Charadrius hiaticula 

 [small intestine] of Cinclus aquaticus, Mergus albellus, So- 

 materia spectabilis, and Lepus cuniculus. The remarks ap- 

 pended do not present anything new. 



HELMINTHES TREMATODES. 



A parasite,, found by Otto in the digestive canal of Che- 

 Ionia midaSj has been described by Creplin under the name 

 of Amphistomum scleropomm. (Archiv, 1844, Bd. i, p. 112.) 

 Among the Irish Trematoda collected by Bellingham (Ann. 

 Nat. Hist. 1844, vol. xiii, pp. 335 422) occur four Mono- 

 stomata and nine Amphistomata, among which are three 

 doubtful species from the intestine of Birds. As for the 

 rest, these Amphistomata all belong to the genus Holostomum 

 [Holostorna] . In the genus Distomum [Distoma] 32 

 species are mentioned, with 11 doubtful species from the 

 intestinal canal of various Water-birds and Fish. Bellingham 

 has, moreover, fallen into a great error in believing that the 

 " porus ventralis" of the Distomata takes a part in the process 

 of propagation. 



