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. Vét.,’ 1856.--_Idem_, in ‘Mém. de l’Institut.,’ 1862.--_Cobbold_, “Case of _Leptus_ producing Boils,” in ‘Worms,’ p. 140, London, 1872.--_Gamgee_, ‘Our Domestic Animals in Health and Disease,’ Edin., 1861.--_Gerlach_, ‘Kraetze und Räude,’ 1857.--_Hebra_, in ‘Oester. Jahrb.,’ 1864.--_Hering_, ‘Die Kraetzmilben,’ Stuttgard, 1845.--_Krabbe_, “Husdyrenes paras. Mider.,” ‘Tidssk. f. Vet.,’ Rœk. 2, Bd. iii.--_Küchenmeister_, l. c., 1855, s. 412 (good figs.).--_Mégnin_, ‘Monographie 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_, “Mémoire sur un nouveau Symbiote (_Chorioptes_, Gerv.),” ‘Journ. de l’Anat. et de la Physiol.,’ 1872.--_Idem_, “Mém. sur un nouvel Acarien,” _ibid._, 1873.--_Idem_, “Mém. sur les Hypopes,” _ibid._, 1874.--_Idem_, “Mém. sur l’organisation et la distribution zoologique des Acariens de la famille des Gamasidés,” _ibid._, 1876.--_Idem_, “Mém. sur les métamorphoses des Acariens en général, et en particulier sur celles des Trombidions,” ‘Ann. des Sci. Nat.,’ 1876.--_Idem_, “Des conditions de la contagion de la gale des animaux à l’homme,” ‘Arch. générales de Méd.,’ 1876.--_Idem_, “Mém. sur le _Demodex folliculorum_ (Owen),” ‘Journ. de l’Anat. et de la Physiol.,’ 1877.--_Moquin-Tandon_, ‘Elém. de Zool. méd.’ (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 (Gammaridæ). 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 in or upon man. Many of the Amphipodous Gammari lead a sort of free parasitic existence, and they are themselves very liable to harbor larval parasites. As regards human parasitism from this source the only records known to me are those quoted below. BIBLIOGRAPHY (No. 39).--_Banon_, “Freshwater Shrimp, or _Gamarus pulex_ (said to have been passed per anum),” ‘Rep. of Path. Soc. of Dublin,’ in ‘Dub. Med. Press,’ April 6, p. 351, 1864.--_Bartels_, “_Gamarus pulex_ in the Human Subject, with a postscript by Troschel,” trans. by Dr E. P. Wright, from ‘Verhandl. des Naturhist. verein. der Preuss. Rheinl. und Westph.,’ in ‘Dubl. Med. Press,’ 2nd ser., vol. ix, p. 407, 1864.--_Wright, E. P._, ‘Remarks on Dr Banon’s Case’ (see Bartels). SECTION IV.--PART V.--INSECTA (Coleoptera, Diptera, Hemiptera, Aphaniptera).