1915. | T. SOUTHWELL : Indian Parasites of Fish. 315, 
1889, page 296, pt. 40, figs. 76-81), and by Ryder (Bull. U.S. 
Fish Comm., 1884, pages 37-42). 
The ‘cunner’ however is a marine fish of the Wrasse family , 
and it is unlikely that our parasites are identical either with those 
obtained by Linton or Ryder. 
Hofer (Handbuch der Fischkrankheiten, Miinchen, 1904) des- 
cribes a number of similar cysts from European fresh-water fishes 
and classifies them as Holostomum cuticula. It is quite possible 
that our larvae belong to the same species. 
If these encysted immature forms of Trematodes are actually 
the young of Holostomum cuticula, it is almost certain that the 
adult forms will eventually be found in the intestine of fish-eating 
birds. The two species of fish infected are both very small and 
would be easily available and readily eaten by such birds. 
(3) Cercaria in skin of Nuria danrica. 
(Plate xxvii, fig. 9). 
Eight specimens presented by Mr. J. Taylor, Angul, Orissa, 
4-v-14. All these fish (which are known in Bengal as “‘ danrika ’’) 
were very heavily infected. In the largest fish, which measured 
36 mm. in length, 27 cysts were counted scattered all over the 
body. The smallest fish measured 21 mm. and 18 cysts were 
counted on this specimen. ‘The older cysts were black pigmented, 
but the pigmentation was not nearly so dense as in the preceding 
form. The capsule was very delicate and easily ruptured. The 
amount of black pigment that was present varied, but was never 
very great. In two very young larval forms, which were removed 
from the gills, no pigment was present. In slightly older stages 
only a little pigment was observed, whilst in the largest and oldest 
forms obtained the pigment was never sufficiently abundant to 
obscure the larval cyst. 
The largest cyst observed was oval and measured I'I mm. by 
‘gmm. The larva only occupied about one-half the interior space 
of the capsule. It measured ‘4 mm. and was folded upon itself. 
What appeared to be a sucker was discernible in the older forms. 
It will be obvious that these larval forms differ from those 
obtained from Civrhina latia in being younger and much smaller. 
Whether or not they are identical with those found on that 
species remains to be determined. 
(4) Cysts from the skin of Nuria danrica var. grahami. 
(Plate xxvi, figs. 5, 5a, 5b and 5c). 
Champadanga, R. Damodar near Calcutta, July, 1913. 
This fish, which only measured 17 mm. long, was caught 
along with the young of a number of carp, Ambassis spp., and 
Barbus spp. 
Three specimens were obtained having black cysts in the skin. 
In one specimen there were 7 cysts, in another 13 or 14, and in 
