258 



THE ANIMAL PARASITES OF MAN 



Ph. 



Ms. 



Vsc. 



Amphimerus noverca, Barker, 1912 (?) 

 Syn.: Distomum conjunctum, McConnell, 1876 (nee Cobbold, 1859); Opisthorchis 



noverca, M. Braun, 1903 pro parte. 



At the autopsy of two Mahommedans who died in Calcutta, 

 McConnell found a large number of Distomata in the thickened and 

 dilated bile-ducts. The worms were lancet-shaped, covered with 

 spines, and measured 9-5 to 127 mm. in length and 2-5 mm. in breadth. 

 The two suckers lie very close to one another, the anterior one being 

 larger than the ventral ; the genital pore opens immediately in front 

 of the ventral sucker ; pharynx spherical ; intestinal caeca extending far 

 back. At the commencement of the posterior third of the body the 

 two testes, somewhat apart, the anterior one roundish, the posterior one 



distinctly lobed. The transverse 

 and slightly lobed ovary in front 

 of the bifurcation of the Y-shaped 

 excretory bladder, whence the 

 uterus, in convolutions barely 

 spreading beyond the central 

 field, extends to the pore; the 

 vitellaria in the lateral areas 

 commence behind the ventral 

 sucker and extend to the testes. 

 Cirrus pouch absent. Eggs oval, 

 34 p by 21 p. 



Genus. Clonorchis, Looss, 1907. 



Structure as in Opisthorchis, dis- 

 tinguished, however, by the branched 

 testes situated one behind the other, 

 the branches of which ventrally en- 

 croach upon the gut forks ; dorsal 

 FIG. ^.-Metorchis conjunct (Syn.: to the testes the S-shaped excretory 

 Distomum conjunctum, Cobb., nee Lew. and bladder, the mam branches of which, 

 Cunn., nee McConn.) : from Cants fulvus. arising at the level of the bifurcation 

 Vs., ventral sucker ; /., intestine ; Vsc., vitel- f th t imo the bidder below 



laria ; Ex., excretory bladder ; T., testes ; . . . . . ... 



a, ovary ; Ms., oral sucker ; Ph., pharynx ; its anterior end. Parasitic in the bile- 

 Ut. t uterus. (After Cobbold.) ducts of mammals and man. 



Clonorchis sinensis, Cobbold, 1875. 



Syn.: Distoma sinense, Cobbold, 1875; Distoma spathulatum, R. Leuckart, 1876 

 (nee Rudolphi, 1819) ; Distoma hepatis innocuum, Baelz, 1883. 



In shape resembles Opisthorchis felineus, 13 to 19 mm. long, 3 to 

 4 mm. broad, at the beginning of sexual maturity 12 to 13 mm. long, 2*5 

 to 3 mm. broad. Oral sucker 0*58 to 0*62 mm., ventral sucker 0*45 to 



1 This species from Canis fulvus was for long thought to be the same as that here described 

 as Amphimerus noverca. It probably does not belong to the genus Metorchis. 



Ex. 



