DB. T. S. COBBOLD's SYNOPSIS OF THE DISTOMID.E. 31 



In a paper read before the Linneau Society January 20, 1859, and since 

 printed in Linn. Trans, vol. xxii. ]>. 363, 1 ventured to establish this 

 genus, employing for that ])urpose the name of the original discoverer 

 of this singular helminthic type. Since that paper was read I have 

 received Diesing's ' Revision der Myzelmiuthen,' and find that he also 

 has separated the same forms of entozoa into a distinct genus, under 

 the title of Gynfecophorus. For the present, therefore, I feel justified 

 in retaining the term previously employed. 



1. BiLHARZIA H^MATOBIA, Cobbold. 



Distomum hcEinatohium, Bilharz, Kiichenmeister, Moulinie. 



GyncEcophorus heemafobius, Diesing, Revis. p. 52. 



Hub. Discovered by Dr. Bilharz of Cairo in the portal system of blood- 

 vessels of Egyptians ; also subsequently observed by him, Griesinger, 

 Reinhard, and Lautner in the veins of the mesentery, bladder, and 

 other parts, giving rise to a formidable and very prevalent disease. 

 In 363 dissections of the human body Griesinger found this entozoon 

 present 117 times. 



2. BiLHARZIA MAGNA, Cobbold. 



B. magna, Cobbold {loc. cit.). 



Hab. I discovered a solitary male specimen of this worm in the portal 

 vein of Cercopithecus fuUginosiis . 



Genus 5. Koxlikebia. (Cohhold.) 



Sexus discretus. Corpus maris filiforme, antrorsum clavatum, rctrorsum 

 sensim attenuatum. Os acetabuliforme, orbiculare. Acetabulum \e\\- 

 trale sessile. Apertura genitalis inter os et acetabulum. Corjjus 

 femince antrorsum filiforme, clavatum, retrorsum subito increscens, 

 reniforme. Apertura genitalis inter os et acetabulum. 



The considerations which have induced me to separate the preceding 

 species into a new genus apply almost equally to the helminth here 

 regarded as the type of another group ; while its peculiar habits also 

 render it worthy of distinction. 



1. KoLLIKERIA FILICOLLIS, Cobbold. 



Distoma Okenii, Kblliker, Diesing. 



D. filicolle, Van Beneden, Mem. sur les Vers. Intest. p. 104. 



Monostoma Jilicolle, Rudolphi, Dujardin. 



Hab. Found in Brama Raii by Rudolphi, Kolliker, and Van Beneden. 

 This species inhabits open follicles in the branchial cavity ; two indi- 

 viduals — male and female — being found in each cyst. 



Genus G, Cbossodeka. 



Although closely allied to the typical distomes in respect of general 

 structure, the presence of a variable number of pi'ominent papillae or 

 fleshy lobes .surrounding the moutli very properly induced Dujardin 



