FILARIA LOA.—This species occurs in Western Africa, on the Gaboon River, and is perhaps more frequent than now commonly supposed. It is an active worm, little more than an inch in length, and is usually found beneath the conjunctiva of the eye. It probably also occupies other positions, and a missionary on the Gaboon informed the writer that he had extracted one from the back of one of his own fingers. Its presence produced an intense burning pain. The negroes are reported to extract the worm by means of a thorn. The worm has also been observed in Brazil and the West Indies.
FILARIA RESTIFORMIS.—Under this name the writer recently described a large Filaria reported to have been withdrawn from the urethra of a man in West Virginia. It was obtained by C. L. Garnett, and sent, together with an account of the case, to the Army Medical Museum of Washington, where it is now preserved. It was a red cylindrical worm, twenty-six inches in length, tapering at the head, and thick, incurved, and obtusely rounded at the tail end.4
4 Proceedings of the Academy of Natural Sciences, Philada., 1880, p. 130.
FILARIA OCULI HUMANI; FILARIA LENTIS.—A few cases are on record of the occurrence of little worms in the aqueous humor and crystalline lens of the human eye, to which the accompanying names have been applied.
FILARIA TRACHEALIS.—Recently some minute worms found by Rainey in the trachea and lungs have been described under this name.
In conclusion, the writer acknowledges his indebtedness for much of the information of this article to the articles on "Intestinal Parasites" and "Diseases from Migratory Parasites" in Ziemssen's Cyclopædia of the Practice of Medicine, and to Glazier's Report on Trichina and Trichinosis.
DISEASES OF THE LIVER.
BY ROBERTS BARTHOLOW, A.M., M.D., LL.D.