THE TREMATODE PARASITES OF FISHES. 



481 



The yolk glands are situated at the sides of the ventral sucker and 

 extend a short distance both in front of and behind it. Their extent is 

 more limited than in S. clidhense. The uterus is very firmly packed and 

 fills almost the whole of the post-acetabular region. The ova have thick 

 brown shells and measure •057--063x -OSS-'OST mm. Their measure- 

 ments are considerably larger than those found by Odhner for the same 

 species. 



Genus BACCIGER n.g. 

 Bacciger bacciger (Paid., Stoss., 1889) (Fig. -3). 

 On two occasions a single specimen of a small distome was found 

 in the stomach of Atherina presbyter. The fish were received in London 







CB 



KSt 



Fig. 3. — Bacciger bao:i(jrr. Ventral view x 100. C. B. Cirrus-pouch; K.St. Ovary; 

 T. Testes. G, Roberts del. 



from Plymouth, and on that account the ^dscera were somewhat decom- 

 posed and the parasites badly preserved. From what could be made out 

 of their anatomy, however, they appear to be either identical with or 

 very closely related to Distomum bacciger um (Rud.) Stossich from 

 Atherina hepsetus. 



NEW SEP.IKS. — VOL. X. XO. 3 OCTOBER, 1914. 



2h 



