BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 



591 



Micrura affmis (Girard). 



Verrill, 1879, p. 186 (not listed for this region); 

 1892, p. 428. 



South of Cape Cod and off Nan tucket and Mar- 

 thas Vineyard; 12 to 50 fathoms. Verrill. 

 Marthas Vineyard and northward. Coe. 



Cercbratulus lacteus (Leidy). 



Verrill and Smith, 1873, P- 630, 324, 349, 350 

 (Mcckelia lactea and M. ingens); Verrill, 1892, 

 p. 433; Coe, 1899. 



Buzzards Bay and Vineyard Sound; "common, 

 burrowing both in sand and mud at and above 

 low-water mark and in shallow water down to 

 several fathoms in depth."- Verrill. Nau- 

 shon, Hadley Harbor, Great and Little Harbors 

 (Woods Hole), Penzance (Buzzards Bay side), 

 Falmouth, Quisset. Coe. 



Fish Hawk station *: 7556 (several dead pieces), 

 7640 ( ? posterior portion only), 7647 ( ? midpor- 

 tiononly), 7652 (? posterior end only), 7659. 



Eggs ripe at New Haven during March, April, 

 and May; in Maine this species breeds in July; 

 eggs can be artificially fertilized and embryos 

 easily reared to pilidium. In recent years 

 the eggs of this form have been extensively- 

 used in experimental embryology. 



Cerebratulus marginatus Renier. 



Verrill, 1892, p. 438 (Cerebratulus fuscus). 



" South of Cape Cod it occurs in 15 to 45 fathoms 

 on bottoms of sand and mud in the cold areas 

 swept by the arctic current, as off Gay Head in 

 19 fathoms." Verrill. Gay Head, under 

 stones, between tides. Coe. Buzzards Bay, 

 at Fish Hawk station 7658; 9 fathoms, mud*. 



Cerebratulus luridus Verrill. 



Verrill and Smith, 1873, p. 630, 502, 508 (Meckelia 

 lurida, sp. nov.); Verrill, 1892, p. 440; Coe, 

 1899. 



Off Gay Head, 19 fathoms, soft mud; off Buz- 

 zards Bay, 25 fathoms. Verrill. Lower half 

 of Buzzards Bay, in 6 to 13 fathoms, on muddy 

 bottoms. Survey. 



Fish Hawk stations: 7638*, 7642* , 7643*0, 

 7647*, 7654*, 7655*. 7658*, 7661 (?), 7662 (?), 

 7669 (?). 



Apparently ripe eggs in Cape Cod Bay in 

 August. Verrill, cited by Coe. 



a Uncertain whether presen at 

 16269 Bull. 31, pt 2 13 4 



Family CARCINONEMERTID^E. 



Carcinonemertes carcinophila (Kolliker). 



Coe, 1902, p. 441. 



Nobska Point, Katama Bay, Menemsha Bight. 



" Parasitic on the gills of various species of crabs 

 when young, migrating to the egg masses of 

 the crab at the approach of sexual maturity." 

 Locally, reported only from the "lady crab" 

 (Ovalipes ocellatus). In the case of a large 

 number of crabs of this species examined by 

 Dr. Coe during July and August of various 

 years the parasites were found on the gills of 

 about 10 per cent of the female crabs, but 

 none were found on the males. 



Family AMPHIPORID^. 



Zygonemertes virescens (Verrill). 



Verrill, 1879, p. 183 (Amphiporus virescens, sp. 

 nov.); 1892, p. 400 (Amphiporus mrescens); 

 Coe, 1899 (Amphiporus iiirescens). 



Woods Hole, Newport; "common in shallow 

 water among hydroids and ascidians, and on 

 the piles of wharves, between tides." Verrill. 

 Piles of United States Bureau of Fisheries pier, 

 Woods Hole steamboat landing, Little Har- 

 bor. Coe. 



Eggs mature at Woods Hole in July and August. 

 Coe. 



Amphiporus ochraceus Verrill. 



Verrill and Smith, 1873, p. 630, 325 (Cosmoce- 

 phala ochracea, sp. nov.); Verrill, 1892, p. 396; 

 Coe, 1899. 



Woods Hole, Vineyard Sound; common between 

 tides, in tide pools, and under stones, creeping 

 among algae, hydroids, etc., or in dead tubes of 

 serpula; on piles of wharves; likewise dredged 

 in 2 to 20 fathoms, on stony or shelly bottoms. 

 Verrill. Woods Hole Harbor, at railroad 

 wharf and Juniper Point, Nobska Point, Pen- 

 zance (Bay shore), Eel Pond; common among 

 eelgrass. Coe. Buzzards Bay, shore of Nash- 

 awena, at Phalarope station 78, in 5 to 6 fathoms, 

 sand and mud*. 



Dr. Coe reports that in the vicinity of New 

 Haven the eggs are laid during May and June; 

 in one case as early as January. 



one or both of these stations. 



