88 U.S. NATIONAL MUSEUM BULLETIN 2 27 



Biology. — Found intertidally amon^ rocks, in encrusting calcareous 

 algae, in holdfasts of Laminaria. Dredged on bottoms of mud, fine 

 grey sand, rocks, and various combinations of sand, gravel, rocks, 

 with shells, bryozoan nodules, ascidians, hydroids. Sexually mature 

 in May to July in British waters (Mcintosh, 1908). 



Material examined. — North Atlantic (Gulf of St. Lawrence, Nova 

 Scotia, Maine, Massachusetts, Rhode Island, Long Island Sound, 

 North Carolina, low water to 1,290 fathoms), North Pacific (Puget 

 Sound, Washington, 30-60 fathoms). 



Distribution. — Scattered records in the Arctic. Also Scandi- 

 navian countries to British Isles, the Baltic, Gulf of St. Lawrence to 

 North Carolina, Vancouver Island to central California, north Japan 

 Sea, Yellow Sea, South Africa, Low water to 1,290 fathoms. 



Genus Eumida Malmgren, 1865 



Type (monotypy): Eumida sangmnea (Oersted, 1843). 



Both species have the body rather thicldy set, relatively short and 

 wide, tapering anteriorly and posteriorly, arched dorsally, flattened 

 ventrally. Prostomium cordiform, rounded anteriorly, slightly 

 notched posteriorly, with 2 eyes (fig. 21a). First tentacular segment 

 not visible dorsally, the first pair of tentacular cirri lateral to pro- 

 stomium; second tentacular segment with 2 pairs tentacular cirri; 

 third segment with fourth pair tentacular cirri, setigerous lobes and 

 ventral cirri. Neuropodia thick, bilobed distally; neurosetae com- 

 pound, with long tapering terminal blades. 



Key to the New England Species of Eumida 



1. Neuropodia bilobed distally with lobes subequal, rounded (fig. 216). Median 

 antenna in middle of prostomium, more slender than frontal antennae. 



E. sangiiinea 



Neuropodia bilobed distally with supra-acicular lobe longer, pointed; sub- 



acicular lobe shorter, rounded (fig. 21c). Median antenna posterior on 



prostomium, subequal in size to frontal antennae E. fusigera 



Eumida sanguinea (Oersted, 1843) 



Figure 21, a, b 



Eumidia americana Verrill and Smith, 1874, p. 290. — Sumner, Osburn, and Cole, 



1913, p. 617. 

 Eumidia vivida Verrill and Smith, 1874, p. 290 (part; type in USNM; = mixture 



of E. sanguinea and Eulalia viridis). 

 Eumida maculosa Webster, 1879, p. 215, pi. 4, figs. 38-41; 1886, p. 134.— Webster 



and Benedict, 1884, p. 703. 

 Eulalia longicornuta Moore, 1906a, p. 222, pi. 10, figs. 7-8 (type in USNM). 

 Eumida tubiformis Moore, 1909b, p. 342, pi. 16, figs. 22-23 (type in USNM). 

 Eulalia (Eumida) sanguinea Fauvel, 1923, p. 166, fig. 59,f-k; 1953, p. 125, 



fig. 63,/-A;; 1955, p. 6.— Annenkova, 1937, p. 158; 1938, p. 143.— Thorson, 



