PARASITES 



1019 



PARASITES 



found in the intestines, and the larvae encapsuled in 

 the connective tissue of all warm-blooded animals, 

 especially man, the hog, dog, cat, mouse, and rat. 



Trichina spiralis, Owen ; (A) encapsulated with con- 

 nective tissue covering (in situ) ; (B) calcified, 

 (After Leuckart.) 



Leidy (1846) was the first to discover this parasite in 

 the hog, the source from which man is infected. — 

 Trichina spiralis, Bischoff (1840). See Trichina 

 spiralis, Owen (1835). — Trichocephalus, Goeze 



Trichinosed pork. (X 30.) 

 (After Leuckart.) 



Trichocephalus hom- 

 inis. Schrank ( in 

 situ.) (After Leuck- 

 art.) 



(1782). See Trichocephalus hominis, Schrank (1788). 

 — Trichocephalus affinis, Rudolphi. Found in 

 the large intestine of the domestic sheep, goat, cattle, 

 dromedary, and Bactrian camel. — Trichocephalus 

 campanula, von Linstow. Found in the intestine 

 of the domestic cat. — Trichocephalus crenatus, 

 Rudolphi. Found in the large intestine of the hog. 

 — Trichocephalus depressiusculus, Rudolphi. 

 Found in the cecum of the dog and ferret. — Tricho- 

 cephalus dispar, Rudolphi (1801). See Trichoceph- 

 alus hominis, Schrank (1788). — Trichocephalus 

 echinophyllus, Xitzsch. Found in the intestine of 

 the dromedary. — Trichocephalus hominis, Schrank 

 (17S8). Syn., Trichuris, Buttner (1761) ; Ascaris 

 trichiura, Linne (1771); Trichocephalus, Gceze 

 (1782) ; Trichocephalus simice patas, Treutler (1793) ; 

 Trichocephalus dispar, Rudolphi (1801) ; Mastigodes 

 hominis, Zeder (1803) ; Mastigodes si mice, Zeder 

 (1803); Trichocephalus lemuris, Rudolphi (1819); Tri- 

 chocephalus palceformis, Rudolphi(i8l9). This parasite 

 of the human intestine is much more common than is 

 generally suspected by physicians, owing to the 

 tenacity with which the worms adhere to the mucous 

 membrane. Recent investigations prove that many 

 cases of obscure and persistent anemia may be traced 

 to its presence by a search for the eggs in the feces. 



— Trichocephalus lemuris, Rudolphi (1819). See 

 Trichocephalus hominis, Schrank (1788). — Tricho- 

 cephalus nodosus, Rudolphi. Found in the cecum 

 of the house-mouse (Mus musculus, Linne j and of 

 the house-rat {Mus rattus, Linne). — Trichocephalus 

 palaeformis, Rudolphi (1819). See Trichocephalus 

 hominis, Schrank (1788). -^-Trichocephalus serra- 

 tus, von Linstow. Pound in the intestine of the 

 domestic cat. — Trichocephalus simiae patas, Treut- 

 ler (1793). ^e e Trichocephalus hominis, Schrank 

 (1788). — Trichocephalus unguiculus, Rudolphi. 

 Found in the intestine, especially the cecum of the 

 wild and domestic rabbit and hare. — Trichodectes 

 canis, de Geer. See Trichodectes la/us, Xitzsch. — 

 Trichodectes caprae, Packard, Gurlt. See Tricho- 

 dectes climax, Xitzsch. — Trichodectes climax, 

 Xitzsch. Syn., Trichodectes capra:, Gurlt, Packard; 

 Trichodectes solidus, Rudow ; Trichodectes mombricus, 

 Rudow ; Petit pou de la chevre, Goat-louse. The com- 

 mon goat-louse frequent on the goat {Capra hi reus, 

 Linne). — Trichodectes crassipes, Rudow. Syn., 

 Trichodectes penicillatus, Piaget. Found on the An- 

 gora goat and kangaroo (Macropus penicillatus'). — 

 Trichodectes equi, Denny (1842). Syn., Tricho- 

 dectes parumpilosus, Piaget (1880), varieties ocellata 

 and tarsata. — Trichodectes latus, Xitzsch, Bur- 

 meister, Denny, Piaget. Syn., Ricinus canis, de 

 Geer ; Trichodectes canis, de Geer ; Pediculus setosus, 

 Olfers; Pediculus canis, O. Fabricius (?); Gros pou 

 du chien ; Hunde-Haarling ; Dog-louse. Found on 

 dogs, especially puppies, mostly on the head and neck. 

 This louse is the host of the finn (Cryptocystis tricho- 

 dectis, Villot) of the tapeworm of the dog [Tuna 

 canind), Linne. — Trichodectes limbatus, Gervais. 

 See Trichodectes climax, Xitzsch. — Trichodectes 

 mombricus, Rudow. See Trichodectes climax, 

 Xitzsch. — Trichodectes ovis. See Trichodectes 

 spacer ocephalus, Xitzsch. — Trichodectes parumpil- 

 osus, Piaget (1880). See Trichodectes equi, Denny 

 (1842). — Trichodectes penicillatus, Piaget. See 

 Trichodectes crassipes, Rudow. — Trichodectes pilo- 

 sus, Giebel. Syn., Pediculus equi, Linne. The 

 louse of the horse and ass. — Trichodectes pubes- 

 cens. See Trichodectes equi, Denny. — Trichodectes 

 pubescens, Xeumann. Louse of the Horse ; Petit pou 

 du cheval. Found on the domestic horse, BurchelFs 

 zebra, and the small horses of Java, — Trichodectes 

 quadricornis, Gay (Xeumann, 1890). A louse of 

 the horse. — Trichodectes scalaris, Xitsch, Piaget. 

 Syn. , Pediculus bovis, Linne ; The Piling Louse ; Petit 

 pou du bauf. Found on cattle. — Trichodectes 

 solidus, Rudow. See Trichodectes climax, Xitsch. 

 — Trichodectes sphaerocephalus, Xitzsch, Piaget. 

 Syn., Trichodectes ovis, Pediculus ovis, Linne. The 

 Sheep-louse ; Sckaf-Haarling. The adults lay their 

 eggs at the base of the wool fibers ; no other host is 

 known. — Trichodectes subrostratus, Xitzsch, Pia- 

 get. Syn., Pou du chat ; Cat-louse. The only louse 

 found on the cat. — Trichodes crassicauda, Belling- 

 ham. See Trichosoma crassicauda, Bellingham. — 

 Trichomonas caudata, Steinberg. An infusorian 

 found in the human mouth. — Trichomonas cavise, 

 Davaine (1875). Syn., Cima-nomonas caviar, Grassi. 

 An infusorian found in the intestine of the guinea- 

 pig. — Trichomonas columbae, Railliet. An infu- 

 sorian intestinal parasite of the pigeon. — Tricho- 

 monas eberthi, Xeumann. Found by Eberth in 

 the fowl and in the glands of Lieberkiihn of the 

 duck. Xeumann holds that the Monocercomonas 

 anatis of Davaine may be identical with thi> species. 

 — Trichomonas elongatus, Steinberg. Found in 

 the human mouth. — Trichomonas evansi, Crook- 



