SOME AQUATIC WORMS, ETC. 195 



rounded with a thick border. The pharynx is broad 

 and ciliated within. The body is colorless, the brick- 

 red spots scattered over the internal surface giving the 

 worm a beautiful appearance. ^Eolosoma is found in 

 ditches among Algae, on which it feeds. It is not very 

 active in its movements. The blood is colorless. 



Among the Sphagnum in the writer's locality there 

 not uncommonly occurs a worm which I have ventured 

 to identify as a member of this genus. It externally 

 differs from the species referred to above in having 

 fewer and larger red spots, which seem to be on the 

 outer surface of the skin, where they are most abun- 

 dantly collected near the two extremities, being fewest 

 on the central region of the body. The bristles are so 

 arranged that they appear to form two rows of clusters 

 on each side, being separated into two groups in each 

 cluster. The worm thus seems to have four rows in- 

 stead of the two, as in the preceding species. Its 

 movements are also much more active. It is also a 

 vegetarian. 



9. OCNEBODRILUS. 



This remarkable worm has thus far been found only 

 in Fresno County, California, where it was obtained 

 among fine Algse growing to the sides of a submerged 

 wooden box, and also occasionally in the mud, with a 

 part of the tail end protruding and motionless. The 

 body is rather less than an inch long, one-twelfth of an 

 inch wide, and presenting the peculiar color mentioned 

 in the Key. Its movements are very slow. 



