36 PARASITES OF MAN 



Cobbold, 'Entozoa/ p. 195, l864>.Kuchenmeister, F., ' Para- 

 siten/ 1855, s. 210, Eng. edit., p. 276, 1857. Lear ed, " Descrip- 

 tion of Distoma constrictum," f Quarterly Journal of Micros. 

 Science/ new series, vol. ii, 1862. Leuckart, II., 1. c., s. 613, 

 1863. Moquin-Tandon, on the Genus Fasciola, 1. c., 1861. 

 Weinland, on Dicrocalium, 1. c., p. 86, 1858. 



Distoma ophthalmobimn, Diesing. There is every reason to 

 believe that the small flukes found by Gescheid 

 and Yon Ammon in the human eye were sexually 

 immature worms, but since it cannot be decided 

 as to what adult species they are referable I pre- 

 fer to notice them under the usual title. Possibly 

 these eye-worms may be referred to D. lanceo- 

 latum, as suggested by Leuckart. However 



FIG 6. The eye fluke 



(Dittoma ophtttaimo- that may be, I deem it unnecessary to repeat the 



binm). Showing the J ' . J f 



suckers and intestinal details recorded in the treatises quoted below. 



tubes After Von _,. . 



Ammon. The largest examples measured only half a line 



or about one millimetre in length. 



BIBLIOGRAPHY (No. 9). Cobbold, ' Entozoa/ p. 191. Ges- 

 cheid (D. oculi humani), in Von Ammon' s f Zeitsch. f. Ophth./ iii, 

 and also in Ammon' s ' Klin. Darstell. d. Krankheit d. Menschl. 

 Auges.,' vols. i and iii. Kuchenmeister, Eng. edit., p. 287. 

 Leuckart, 1. c., s. 610. Nordmann (Monostoma lentis), " Mikr. 

 Beitr./' Heft, ii, 'Vorwort/ s. ix, 1832. 



Tetrastoma renale, Chiaje ; Hexathyridium pinguicola, Treut- 

 ler ; and H. venarum, Treutler. Whether these forms are good 

 species or not, the fact that they were genuine parasites cannot, 

 I think, be disputed. The first-mentioned measured five lines 

 in length, and was found by Lucarelli in the urine. The 

 second, eight lines long, was found by Treutler in a small 

 tumour connected with the ovary. The third, measuring three 

 lines in length, was twice found in venous blood, and twice in 

 the sputum of patients suffering from haemoptysis. 



BIBLIOGRAPHY (No. 10). Delle-Chiaje, 'Elmintografia Umana,' 

 1833. Bremser (1. c., Bibl. No. 2), s. 265, 1819. Cobbold, 

 ' Entozoa' (p. 204, et seq.).Dujardin (1. c., Bibl. No. 2), 

 s. 265, 1819. Treutler, ' Obs. Path. Anat. ad Helm. Corp. 

 Humani/ p. 19, 1793. Zeder, ( Anleitung zur Naturg. der Ein- 

 geweidewiirmer,' s. 230, 1803. 



Amphistoma hominis, Lewis, and McConnell. The original 

 account of this species is based upon two finds. The first 

 series of specimens was procured from Dr J. O'Brien, of 



