268 PARASITES OP MAN 



much infested. When the parasites had reached my left arm -pit 

 they occasioned extreme torture. I have known these autumnal 

 spiders to produce small suppurating boils on the abdomen. 

 I may add that Dr Tilbury Fox has brought under my notice 

 an instance where the hexapod larva of another species (probably 

 Trombidium cinereum) was found to have occasioned severe 

 irritation in a child. 



BIBLIOGRAPHY (No. 38). Alibert, ( Maladies de la Peau/ Paris, 

 1833. Audouin, V., art. "Arachnida," in 'Todd's Cyclop./ 

 vol. i, 1836. Beneden, Van (et Gervais), ' Zool. Med./ 1859. 

 Bourguignon (et Delafond), in ' Rec. Vet./ 1856. Idem, in 

 'Mem. de 1'Institut.,' 1862. Cobbold, "Case oiLeptus produc- 

 ing Boils/' in 'Worms/ p. 140, London, 1872. Gamgee, ' Our* 

 Domestic Animals in Health and Disease/ Edin., 1861. 

 Gerlach, ' Kraetze und Raude/ 1857. Hebra, in ' Oester. Jahrb./ 

 1864. Bering, 'Die Kraetzmilben/ Stuttgard, 1845. Krabbe, 

 " Husdyrenes paras. Mider.," ' Tidssk. f. Vet./ Reek. 2, Bd. iii. 

 Kuchenmeister, 1. c., 1855, s. 412 (good figs.). Megnin, 

 ' Monographic de la tribu des Sarcoptides psoriques.' (This work 

 contains a full bibliography and numerous beautiful plates ; see 

 also Review in the ' Veterinarian/ Aug., 1877, p. 563). Idem, 

 " Memoire sur un nouveau Symbiote (Ghorioptes, Gerv.)," 

 ' Journ. de PAnat. et de la Physiol./ 1872. Idem, " Mem. sur 

 un nouvel Acarien," ibid., 1873. Idem, " Mem. sur lea Hy- 

 popes," ibid., 1874. Idem, "Mem. sur ^organisation et la 

 distribution zoologique desAcariens de la famille desGamasides," 

 ibid., 1876. Idem, " Mem. sur les metamorphoses des Acariens 

 en general, et en particulier sur celles des Trombidions," 'Ann. 

 des Sci. Nat.,' 1876. Idem, "Des conditions de la contagion 

 de la gale des animaux a 1'homme," 'Arch, generales de Med./ 

 1876. Idem, "Mem. sur le Demodex folliculorum (Owen)/' 

 ' Journ. de 1'Anat. et de la Physiol./ 1877. Moquin-Tandon, 

 'Elem. de Zool. med.' (Hulme's edit., p. 302-328), 1861. 

 Williams, in his ' Veterinary Surgery ' (good figs., reproduced 

 from Gamgee's translation of ' Gerlach,' &c.), 1872. 



SECTION IV. PART IV. CRUSTACEA (Gamrnaridrc). 



Although multitudes of small Crustaceans are parasitic upon 

 fishes, and some few of them adhere to oceanic mammals 

 (Cetacea), I am sceptical as to the parasitism of Crustacea either 



