THE ANIMAL PARASITES OF MAN 



repeatedly been found on man in Moscow and Leipzig (Ziirn. Ber. d. med. 

 Ges., Leipzig, 1877, p. 38), as Chorioptes bovis. 1 



Nephrophages sanguinarius, Miyake and Scriba, 1893. 



Males measure 0*117 mm. in length and 0*079 m breadth ; females 

 up to 0-360 mm. in length by o- 120 mm. in breadth. The head 

 is provided with two very large scissor-like jaws and two large 

 round eyes. The legs are composed of five segments and are all 

 of equal length ; the three anterior pairs of legs have peduncu- 

 lated ambulacra, the posterior ones terminate in a claw. The 



FIG. 246. Nephrophages sanguinarius, en- 

 larged. Male, ventral surface. (After Miyake 

 and Scriba.) 



FIG. 247. Nephrophages san- 

 guinarius, female, dorsal aspect, en- 

 larged. (After Miyake and Scriba.) 



1 The most important literature respecting the Sarcoptidce : Hertwig, C., " Ueber 

 Krcitz und Rdudemilben" (Arch. f. Naturgesch., 1835, i., p. 398); Gurlt and Hertwig., 

 Vergl. Unters. ub. d. Haut d. Menschen u. ub. d. Kratz milben., Berlin, 1844 ' Fiirsten- 

 berg, M. H. F., Die Krdtzmilben des Menschen u. d. Thieve., Lpzg., 1861 ; Bourguignoii, 

 H., " Rech. s. la contag. de la gale des animaux a I'homme " (Mem. soc. biol., Paris, 1851, 

 iii., p. 109, Ann. d. sc. nat., 1855, iii., p. 114); Megnin, P., "Mem. sur I'acclim. des 

 acariens psoriques des animaux sur d'autr'es esp. anim. et sur I'homme " (La France 

 medicate, 1876, xxiii, p. 166) ; Megnin, P., " Sur certains details anat. que presentent 

 Vespe.ce Save. scab, et ses nombreuses var." (C. R. Ac. sc., Paris, 1875, Ixxxi., p. 1058) ; 

 Bergh, R., "Ueber Borkenkrdtze " (Virchow's Arch., 1860, xix., p. i, and Vier.tel- 

 jahrssch. /. Dermat. u. Syphilis, 1874, vi., p. 491); Megnin, P., " Les acariens para- 

 sites, Paris "(Encycl. scientif. d. ai de-memoir e,s) ; Weydemann, " Sarc. vulpis b. Mensch." 

 (C. f. B. u. P., 1897, xxii., p. 442); Canestrini, G., and P. Kramer, " Demodicidce 

 u. Sarcoptidce" (Das Thierreich., vol. vii., Berlin, 1899); Alexander, A., " Uebertrag. 

 d. Thierkrdtze auf Mensch." (Arch. f. Dermatol. u. Syph., 1900, Iii., p. 185). 



