Bulk U. S. F. C. 1899. (To face page 492.) 
Plate XXII. 
245. Rhynchobothrium sp. Cyst from beneath serous coat of intestine 
ot Mold viola; life. 1. 
246. Blastocyst liberated from cyst. 1. 
247. 248. Two views of larva from blastocyst. 
249, 250. Opposite sides of proboscis near apex, x 300. 
251. Rhynchobothrium sp. Pyloric; caeca oi Meiiaccias bilineams with 
cysts and immature nematodes on serous coat, x 2. 
252. a and b. Cysts, the latter slightly compressed to show the con- 
tained embryo, x 4. 
253. Embryo liberated from blastocyst, x 18. 
254. Proboscis of same, x 400. 
