340 
Entozoa of Fishes 
were distinctly lobed and in the exceptions, where distension had occurred, 
the lobing could be made out without much difficulty. The disposition 
of the yolk-glands in the post-testicular space was also always as I have 
described it. Upon these three features mainly the identity of the 
species depends. As already remarked, it is highly probable that the 
British form is identical with the Mediterranean form and therefore, 
with Rudolphi’s original. The form described by Odhner, if errors of 
observation be excluded, may be regarded as a northern variety or 
species. The extreme degree of obliquity of the testes noted by 
Stossich in Loborchis mutabilis suggests that obliquity may be a 
possible variation in the species even although it has not been observed 
in my specimens. 
Sub-family II. Stephanochasminae Looss. 
Genus i. Stephanochasmus Looss 1899. 
Species 1. Stephanochasmus baccatus Nicoll 1907. 
About half a dozen immature specimens were found in the intestine 
of a single Cottus scorpius. Being immature they can hardly be identified 
with certainty, but the number of cephalic spines, namely 28 in each 
row, points almost unmistakably to S. baccatus. In two of the 
specimens there were only 27 in each row, but variation in the number 
to this extent appears to be found in all the species of Stephanochasmus. 
The length of the spines was 0'024—0032 mm. 
The specimens measure T25—2'05 mm. in length. The maturity 
size must be about 2'2 mm. In the largest specimen the oral sucker 
measures 0T7 mm. and the ventral sucker 0'22 mm. The neck being 
well extended the prepharynx is two and a half times as long as the 
pharynx, which measures 0T3 x O'lO mm. The cirrus-pouch extends 
only a short distance behind the ventral sucker. 
The encysted larva of this species was found under the skin in 
Pleuronectes limanda (Nicoll and Small 1909) and has later been found 
by Elmhirst at Millport in Drepanopsetta platessoides. 
Species 2. Stephanochasmus pristis (Deslongch). 
A few immature specimens of this species were taken from the 
pyloric coeca of a cod ( Gadus callarias). Miss Lebour (1908) was the 
first to record the occurrence of this species in the cod, but it is not at 
all common. She met with it in only 2 °/ 0 . 
