PARASITES 



nge-mite, Scab-mitt, Scab-insect, Common Scab. 

 The cause of a special form of mange in the horse, ox, 

 buffalo, sheep, goat, and rabbit. — Psoroptes longi- 

 rostris, Megnin. See Psoroptes communis, Fiirsten- 

 berg. — Psorosperma crouposum, Rivolti. See Coc- 

 cidium oviforme, Leuckart — Psorospermies des 

 Insects, Balbiani. See Microsporidia. — Pterolichus 

 uncinatus, Megnin. Found on fowls. — Pterophagus 

 strictus, Megnin. An acaridan found on the pigeon. — 

 Puce chique. See Sarcopsylla penetrans, Westwood. 

 — Puce de l'homme. See Pulex irritans, Gervais. — 

 Puce de rats. See Pulex murinus, Megnin. — Puce 

 de souris. See Pulex musculi, Megnin. — Puce des 

 pigeons. See Pulex avium, Taschenberg. — Puce 

 du chat, Puce du chien. See Pulex serraticeps, 

 Gervais. — Puce penetrante. See Sarcopsylla pene- 

 trans, Westwood. — Pulex anseris, Redi. See Lipeu- 

 rus jej unus, Nitzsch. — Pulex ater, Linne. Sec Pulex 

 irritans, Linne. — Pulex avium, Taschenberg. Syn., 

 Pulex columbce, Gervais, Denny ; Pulex gallince, 

 Schrank ; Ceratopsyllus galling, Bouche ; Ceratopsyllus 

 avium, Taschenberg ; Vogelfloh, Puce des pigeons, Bird- 



, Hen-flea. — Pulex canis, Curds. See Pulex ser- 

 eps, Gervais. — Pulex capi, Redi. See Menopon 



'idum, Piaget. — Pulex columbae, Denny, Gervais. 

 Pulex avium, Taschenberg. — Pulex columbae 

 ajoris, Redi. See Lipeurus baculus, Nitzsch. — 

 Pulex cygni, Redi. See Ornithobius bucephalus, 

 Giebel. — Pulex felis, Bouche. See Pulex serraticeps , 

 Gervais.— Pulex goniocephalus, Taschenberg. The 

 flea proper of hares and rabbits. — Pulex hominis, 

 Duges. See Pulex irritans, Linne. — Pulex irritans, 

 Linne (1758). Syn. , Pulex ater, Linne (1746); Pulex 

 vulgaris, De Geer (1778) ; Pulex hominis (1832) ; 

 Human Plea, Puce de Phomme, 

 Ge m ei tier Ploh, Menschenfloh. 

 This species, common on man, 

 may be conveyed to dogs and 

 cats and rabbits. — Pulex mini- 

 mus cutem penetrans, Catesby. 

 See Sarcopsylla penetrans, West- 

 wood. — Pulex minutissimus 

 nigricans, Barrere. See Sarcop- 

 sylla penetrans, Westwood. — 

 Pulex murinus, Megnin. Syn,. 

 Rat-flea, Puce de rats. A very 

 small species found on rats. — 

 Pulex musculi, Megnin. Syn., 

 -flea, Puce de souris. A 

 minute form found on mice, but 

 not transmitted to dogs and cats. 

 — Pulex pavonis, Redi. See Goniodes falcicornis, 

 Nitzsch. — Pulex penetrans, Linne. See Sarcopsylla 

 penetrans, Westwood. — Pulex serraticeps, Gervais. 

 Syn.. Pulex cati, Megnin; Pulex felis, Kiinckel, 

 Bouche ; Pulex canis, Curtis ; Ceratopsyllus cam's, 

 Duge-; Ceratopsyllus serraticeps, Gervais; Dog-flea, 

 Hundefloh, Puce du chien, Puce de chat, Cat-flea. 

 This flea abounds on dogs, is less frequent on 

 cats and is transmissible to man, but is not usually 

 troublesome to him ; it is occasionally found on 

 rabbits. It acts as the intermediate host for Tiznia 

 canina, Linne. Verrill and others hold the cat-flea 

 and dog-flea to be different species, the posterior 

 tarsi of the latter having the fifth joint longer 

 than the second, while in the cat-flea the second 

 joint is longer than the fifth. — Pulex vulgaris, De 

 Geer. See Pulex irritans, Linne. — Pyrellia cada- 

 verina, Robin. See Musca cadaverina. Linne. — 

 Rain Breeze-fly. See Hamatopota pluvialis, Mei- 

 gen. — Rainey's Bodies, Rainey's Tubes, Rainey'- 



Larva of the flea 

 (Pulex irritans, 

 Linne). 



1007 PARASITES 



sche Kdrperchen. See Sarcocystis miescheri, Ray 

 Lankester. — Rasenbremsfliege. See Gastrophilus 

 nasalis (Linne), Schiner. — Rat-flea. See Pulex muri- 

 nus, Megnin. — Red Flea, Red Harvest-mite, Red 

 Mite. See Tetranychus autumnalis, Shaw. — Red- 

 tailed Bot-fly. See Gastrophilus hamorrhoidalis, 

 Leach. — Red-tailed Horse-bot. See Gastrophilus 

 hcemorrhoidalis, Linne. — Reduvius amcenus. This 

 is found in Borneo. — Reduvius cruentus, an Indian 

 species. — Reduvius personatus, L. Kothwanze. A 

 common fly-bug in houses throughout Europe, rarely 

 in the open ; appears at night to suck the juices of bed- 

 bugs, spiders, flies, moths, etc. Cobbold cites it with 

 the other species as a human parasite. — Reduvius 

 pungens, LeConte. Frequently found in the Eastern 

 United States> about bed-rooms, living upon bed-bugs 

 and other insects. — Reduvius serratus, a predaceous 

 bug of India. The bugs of the genus Reduvius 

 although included by Blanchard and others among 

 those occasionally attacking man, are on the whole 

 useful. The young stages of these insects cover 

 themselves over with dust, and thus concealed, lurk in 

 dark places for the insects upon which they ordinarily 

 prey. — Red Worm of Game-keepers. See Synga- 

 mus trachealis, von Siebold. — Rhabditis cornwalli, 

 Cobbold. See Rhabditis terricola, Oerley. — Rhab- 

 ditis genitalis, Scheiber. See Rhabditis pellio, 

 Biitschli. — Rhabditis intestinalis. See Rhabdone- 

 ma intestinale, R. Blanchard. — Rhabditis niellyi, R. 

 Blanchard (1888). Syn., A nguillula Uptodera, Niel- 

 ly (1882); Leptodera niellyi, R. Blanchard (1 885) ; 

 Pilaria niellyi, Moniez. It is found in the skin of 

 man, producing a dermatitis occurring in discrete and 

 confluent papules and vesico-papules, covering the 

 arms, forearms, backs of the hands, and dorsal surface 

 of the fingers. The eruption also involves the thighs. 

 From the papules the parasite can easily be expressed. 

 The disease resembles very strongly the African affec- 

 tion termed "Craw-craw."' — Rhabditis pellio, 

 Biitschli (1873). Syn., Pelodera pellio, Schneider 

 (1866) ; Rhabditis genitalis, Scheiber (1880). This 

 was found in the urine of a woman. The history of 

 this case points to the parasite having lived in the 

 vagina rather than in the urinary passages proper. 

 — Rhabditis stercoralis (Normand), Bavay. See 

 Rhabdonema intestinale. R. Blanchard. — Rhabditis 

 teres, Perez. See Rhabditis terricola, Dujardin. — 

 Rhabditis terricola, Dujardin (1845), Oerley 

 (1881). Syn., Pelodera teres, Schneider (1866) ; 

 Rhabditis teres, Perez (1866) ; Pelodera setigera, Bas- 

 tian (1879) ; Rhabditis cornwalli, Cobbold (1879). 

 This is common in garden earth throughout Europe. 

 Found in the body of a boy who died from an 

 epidemic disease on board the British reformatory 

 school ship "Cornwall" in 1879, producing a trichino- 

 sis-scare. — Rhabdonema intestinale, R. Blanchard 

 (1885). Syn., Anguillula stercoralis, Bavay (1877), 

 Normand; Anguillula intestinalis, Bavay (1877), 

 Grassi ; Leptodera stercoralis, Cobbold, ( 1879 ) : 

 Pseudo-rhabditis stercoralis, Perroncito (1881) ; Rhab- 

 ditis stercoralis, Rhabditis intestinalis, Rhabdonema 

 strongy 'hides, Leuckart (1883); Strongyloides intesti- 

 nalis, Grassi (1883) ; Rhabditis strongyloides, Grassi. 

 Found in the human intestine in cases of catarrhal 

 gastro-enteritis. It is said to determine the Cochin- 

 china diarrhea, both of men and of fowls. Grassi 

 first demonstrated that Anguillula stercoralis was 

 but the free state, and Anguillula intestinalis the 

 parasitic stage, of the same worm. — Rhabdonema 

 longum, Grassi and Segre. Syn., Rhabdonema suis, 

 Lutz — Rhabdonema strongyloides, Leuckart. See 

 Rhabdonema intestinale, R. Blanchard. — Rhabdone- 



