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 Remarks.—Has thrice been found in man. Infests the liver.

Lit.—All standard works, especially that of Leuckart.

3.—Distona crassum, Busk.

Syn.—D. Buskii, Lankester; Dicrocetium, Weinland.

Larvæ—Unknown.

Int. Host.—Not known. Probably a species of oyster.

Remarks.—Infests the duodenum. Found at least thrice in man.

Lit.—Cobbold; Synops. of the Distomidæ in Linn. Proceed., 1860;Idem. Obs. on the lne fluke, with notes of two cases in which a missionary and his wife were the victims; Linn. Soc. Proc., Vol. XIT. (zool. div.;} and in The Veterinarian, 1876.

4.—Distoma sinense, Cobbold.

Syn.—D. spatulation, Leuckart.

Larvæ.—Unknown.

Int. Host,—Probably a fresh water mollusk.

Remarks.—Infests the liver of Chinese. Discovered by Professor McConnell.

Lit.—MeConnell; Lancet for August, 1875; Macgregor; Glasgow Medical Journal for January, 1877.

5 —Distoma conjunctum, Cobbold.

Syn.— None.

Larvæ.—Unknown.

Int. Host,—Probably & small mollusk,

Remarks.—Infests the liver. Originally found by me in an American fox (1858,) and subsequently by Lewis in pariah dogs (1872,) and afterwards by McConnell in man (1875.)

Lit.—Cobbold ; Synopsis (l.c.) 1859; Lewis; Govt. Rep., Calcutta, 1872; MeConnell; Lancet, Feb., 1876.

6.—Distome heterophyes, Siebold.

Syn.—Fasciola, Moquin-Tandon; Dierocælium, Weinland.

Larvæ.— Unknown.

Int. Host.— Unknown.

Remarks.—Infests the intestine. Only once found. Discovered by Bilharz, at Cairo, 1851.

Lit.—All standard works, more particularly that of Leuckart.

7.—Distoma ophthalmobium, Diesing.

Syn.—D. oculi kumani, Gescheidt; D. lentis, Von Ammon; Dicroeælium, Weinland; Monostoma, Nordmann; Festucaria, Moquin-Tandon.

Remarks.—Several times found in the eye, but as all the specimens were sexually immature, the species, as such, is of doubtful authenticity.

Lit.—All standard works.

8.—Tetrastomea renale, Delle-Chiaje.

Syn.—None.

Remarks.—Supposed to infest the kidney. Discovered by Lucarelli in 1826.

Lit,—Delle-Chiaje, Elmintografia, Umann, 1833.

9.—Hexathyridium pinguieola, Trentler.

Syn.—Hexastoma, Cuvier; Linguatula, Lamarek; Polystoma, Zeder.

Remarks.—Only once detected. It was lodged in a small tumour of the size of a nut.

Lit.—Trentler; Obs. path, anat. ad heln, corp. huamani, 1793.