48 
Glugee——but contented himself with remarking that the 
cysts scarcely ever exceeded 1 mm. in diameter. Taking 
into consideration, however, the agreement in size and the 
very similar habitat and appearance of the parasites in the 
two cases, there is every probability that those in the 
plaice also belonged to this species. 
About the same time Linton (4) published his syste- 
matic researches on fish parasites. Under Pseudopleuro- 
nectes americanus, the winter flounder, is a note (p. 485) 
concerning two small specimens infected with cysts. The 
gut-walls of one throughout almost the entire length, and 
of the other for a short distance, were entirely covered 
with ‘“ sporocysts ”’ (7.e. seen from the outer or eclomic 
side). The cysts were irregular in shape where crowded 
together, and where not—which was in but few places— 
they were elliptical or spherical. Their size varied, but 
none much exceeded 1 mm. in diameter. Fig. 1 is re- 
produced from Linton’s fig. 4, Pl. 1, and shews the 
general appearance of a portion of the intestine wall. 
Compared with Johnstone’s fig. 1, Pl. D., the similarity of 
the two is readily apparent, allowance being made for the 
difference in magnification. Linton’s figure, however, 
does not shew the areas or regions which are observable 
in Johnstone’s specimen. ‘lhe spores were oblong-ovate, 
about °0038 mm, (8) im length by ‘0015 mm. (1gu) in 
width, and these agree very well with the dimensions I 
have found, both for those from Johnstone’s plaice and 
from my own. In short, I am quite confident that this 
specimen of Pseudopleuronectes was also infected with 
Glugea stephani. 
From another Pleuronectid, Rhombus (Stromateus) 
triacanthus, the butter-fish, Linton further describes (p. 
455) a.“ sporocyst”’ occurring in the liver, white and 
globular, and about 15 mm, in diameter. When com- 
