154 ^°^ 



Habitat. — This is a much smaller and less slender species than C. 

 carcinofhila (Kolliker) Coe when sexually mature, and differs from 

 it in regard to size of posterior chamber of proboscis, in the stylet ap- 

 paratus, and in many other anatomical details, although the differ- 

 ences are not very considerable. 



In general appearance, in color, arrangement of ocelli, esophagus, 

 intestine, and brain the two species are very similar. C. carcinophila 

 lives on the gills and among the q^% masses of various species of crabs 

 on the Atlantic coast of North America and on the coasts of Europe. 

 C. epialti also lives when sexually mature among the egg masses of 

 a crab — in this case Epialtus productus^ the common kelp crab of 

 the California coast. 



Upwards of one hundred of these little worms were found among 

 the eggs of a single crab at Monterey, Calif., September 3, 1901. In 

 practically all, the sexual products were nearly mature, but no eggs 

 were laid in confinement. The worm lived only a few days in a dish 

 of sea water and appeared less hardy than the species on the Atlantic 

 coast. I was unable to determine whether the worms pass their early 

 life on the gills of the crab, as does C. carcinophila^ but suspect that 

 this may be the case. 



7. AMPHIPORUS CRUENTATUS Verrill 



pi. XX, figs. 1-6. 



Proc. U. S. Nat. Mus., li, p. 184, 1879. 



Trans, Connecticut Acad., viii, p. 399, p1. xxxiii, figs. 7, 8 ; pi. xxxv, fig, 

 3, 1892. 



This species, which has previously been found only in New England, 

 is fairly common among various growths on the rocks of the break- 

 water at San Pedro, Calif. A number of specimens were also obtained 

 from piles at Monterey, Calif. 



Body small, soft, rather slender, usually 10-25 mm. in length, of a 

 pale yellow, bright yellow, or sometimes flesh color, and having very 

 conspicuous vessels with deep red blood, the color of which resides in 

 the large, discoid corpuscles. 



Head slender, with inconspicuous oblique furrows placed far back 

 from tip. 



Ocelli usually five to ten on each lateral margin of head (p1. xx, 

 fig. 6; text fig. 19), usually well separated, irregular in size and posi- 

 tion ; anterior ocellus on each side distinctly the largest and situated 

 more superficially. 



Proboscis very long and large, of a pale, slightly pinkish color. 



