7 o 4 



THE ANIMAL PARASITES OF MAN 



cages by hot solution of caustic potash, in addition, sprinkling over 

 with tar, red carbolic acid or petroleum, thoroughly powdering over 

 the birds with flores pyrethrae, washing with water containing oleum 

 anisi, washing the walls, doors and bedsteads with soap, disinfection 

 of the mattresses, linen and clothes, will protect against further 

 infection. In the case of man the disease needs no special treatment, 

 as the eruptions generally disappear after some days. Heinecke 1 

 recommends lavages with i per cent, carbolic acid solution. [Vide 

 also p. 492 in body of this work. F. V. T.] 



[Dermanyssus hirundinis, Hermann, is identical with this species. 

 By far the best treatment is with paraffin or kerosene oil applied to 

 the places where they pass the day. F. V. T.] 



Ixodes reduvius (ricinus). 



The female is occasionally transmitted to the human skin, and 

 bores its proboscis deep into it and sucks itself full of blood. At 

 sensitive points of the cutaneous surface for example over the skin 

 of the penis a feeling of severe pain is produced. Buy's 2 observations 

 as to the geographical distribution of the Ixodincc show that in all 

 lands in which cattle, horses, sheep and dogs exist, Ixodince are to be 

 found. Recent observations show that the Ixodincc play an important 

 part in the transmission of Haemosporidia (vide body of work, 

 pp. 493, 494). Sprinkling with oil, vaseline, benzine, ether, petroleum, 

 naphtha, turpentine (Jelgenum 3 ), will easily lead to the removal of 

 the parasite ; if the body is torn away with violence and the proboscis 

 is left sticking in the skin, the presence of the latter will give rise to 

 inflammation and suppuration. 



Sarcoptes scabiei (Scabies). 



The disease produced by Sarcoptes scabiei shows itself in poly- 

 morphous areas, such as accompany eczema, and are produced on 

 the one hand by the Sarcoptes alone and on the other hand by 

 the scratching with the nails. The localization of both kinds of 

 efflorescences is different from those which are produced by the 

 Sarcoptes ; they occur as papules, vesicles, pustules and mite-tracks, 

 and their usual situation is between the fingers, on the ulnar border 

 of the hand, on the wrist, on the palm of the hand, on the anterior 

 border of the axilla, on the penis and at the base of the thorax. The 

 excoriations are situated on the forearm, over the thigh, over the 

 abdomen, and may be distributed in greater or less degree over the 



1 Heinecke, Milnch. med. Wochenschr., 1901. 



' Buy, "Histoire naturelle et medicale des Ixodes," "These de Lyon," 1906. 



3 Jelgenum, Med. Weekbladv. Noord- en Zuid-Nederland, 1901, i, No. 24. 



