DB. T. S. COBBOLD S SYNOPSIS OF THE DISTOMIBjE. 3 



Ordo I. TKEMATODA. 

 Tribus I. Distomidje. 

 Grenus 1, Fasciola, Linn. (pars). 

 This genus, originally established by Linnaeus, has been for a 

 long time associated with otlier generic types by most authorities, 

 but, as Blanchard and myself have endeavoured to show, without 

 any sufficient cause. The presence of a branched intestinal canal 

 divided into numerous caBcal appendages is highly distinctive ; and 

 I am satisfied that the custom of rejecting the old title is not only 

 an injustice to its distinguished author, but is a change fraught 

 with no corresponding advantage. 

 1. Fasciola hepatica, Linn. 



F. hepatica, Linn. Syst. Nat. vol. xii. p. 1077; also by Pallas, Fabri- 

 cius, Miiller, Frolich, Schrank, Bosc, Blainville, Lamai-ck, Blanchard, 

 Cobbold, &c. 

 F. humana, Gmelin. 



Distomum and Distoma hepaticum, of Abildgaard, Zeder, Meblis, Ru- 

 dolphi, Bremser, Bojanus, Delle Chiaje, Dujaidin,Creplin, Bellingham, 

 Siebold, Owen, Diesing, Baird, Kiichenmeister, and others. 

 Planaria latiuscula, Goeze. 



Hab. Though most frequent in ordinary grazing cattle, it has been 

 noticed in the Horse and Ass by Daubenton, in Capra Hircus by 

 Diesing, and in C. Ammon by Bremser, in Bos Urus by Miram, in 

 Cervus Capreolus by Pluskal, in C. Elephas, C. Dama, and Antilope 

 Dorcas by others, in Camelus bactrianus by Bremser, in Castor Fiber 

 by Czermack, in Sciurus vulgaris by Tozetti, in Leptis timidus and 

 Li. Cuniculus by myself and others, in Macropus giganteus by Bremser 

 and Diesing. 



Pallas, Bauhinus, and Bidloo have recorded the occurrence of 

 this parasite in man ; and doubtful instances are also given by 

 Meblis and Duval. More recently, Prof. Partridge detected it in 

 the human gall-bladder, particulars of the case being given in the 

 second edition of Dr. Budd's work on " Diseases of the Liver." 

 Giesker of Zurich describes an undoubted example, where an im- 

 mature form occupied the cavity of an abscess in the sole of a 

 woman's foot ; and a similar case has occurred in the practice of 

 Mr. Fox of Topsham, Devon, the abscess containing a living 

 worm, and fragments of a second being situated aboiit three inches 

 behind the ear. Mr. Harris of Liverpool has Kkemse commu- 

 nicated a case where six or seven flukes are said to have escaped 

 from an abscess connected with the scalp of a child. These several 

 Distomes, occurring in England, have been preserved, and their 



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