280 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



beset with small sub-triangular spines, and, though these 

 are also to be seen on the swollen posterior part, they are 

 very much smaller there. 



The pharynx is large, oval, and lies some little 

 distance behind the oral sucker. The ventral sucker is 

 rather large, and is situated on a kind of ventral 

 eminence, its longest diameter is the transverse one. The 

 intestinal branches are rather capacious, and are con- 

 stricted at irregular intervals. In none of the specimens 

 can any very definite trace of the reproductive organs be 

 found, but all those examined were evidently very 

 immature. 



I consider this worm to be identical with Distomum 



valdeinflatum, Stossich, though there are, indeed, some 



differences. It is rather like D. bicorontmn, Stossich, but 



is apparently distinct so far as the armature of the neck is 



concerned. Stossich* found 1). valdeinflatum in Gohius 



jozo, and Lintont has also recorded it from Alutera 



schcejpfi (the orange file-fish, an American Atlantic 



Monacanthid). In the latter case Linton found the worms 



in an outer case of connective tissue, surrounding a " thin 



hyaline sac," in which the trematode was contained. But 



he found them attached by slender peduncles to the 



peritoneum of the hosts, whereas in my examples they were 



imbedded in the flesh. But in one case I found a worm 



lying in its double sac, which was situated directly 



beneath the peritoneum. 



In the specimens of the dab infected with this distomid 

 larva, which we obtained in Luce Bay on October IS, 1904, 

 the emaciation was not nearly so marked as in those 

 obtained earlier in the year from Captain Wignall. But 



*Bull. Soc. Adriat. Trieste, VIII., 1883, p. 114, pi. 1, fig. 4. 



f Proc. U. S. Nat. Mus., Vol. XX., No. 1134, p.5 27, pis. 47-8, 

 figs. 10-14, 1-2 ; 1898. 



