126 U.S. NATIONAL MUSEUM BULLETIN 258 



Megaluropus longimerus Schellenberg 



Megaluropus longimerus Schellenberg, 1925, pp. 151-153, fig. 14. — J. L. Barnard, 

 1962b, p. 103, figs. 20, 21; 1964a, p. 224. 



A subspecies of Megaluropus longimerus has been described from 

 the Gulf of California by Barnard (1968). The occurrence of sub- 

 speciation in the Pacific members of this species suggests that the 

 Pacific population may be distinct from the West African types; 

 unfortunately Schellenberg's material was not figured and minute 

 details cannot be compared. 



Material. — hazard canyon: Phyllospadix-peivetiid grid, rare. 

 goleta: Anthopleura elegantissima beds, rare. 



Distribution in eastern Pacific Ocean. — Hazard Canyon, 

 California to Bahia de San Ramon, Baja California, 0-27 m.; a 

 subspecies is known from Bahia de Los Angeles, Gulf of California. 



Melita appendiculata (Say) 



Melita appendiculata (Say) : Stebbing, 1906, p. 428. — Shoemaker, 1955a, p. 50. 

 Melita fresneli (Audouin) : Stebbing, 1906, p. 423 (with literature). — Shoemaker, 

 1941b, p. 187.— Hewatt, 1946, p. 204.— J. L. Barnard, 1955a, pp. 13-14. 



Material. — goleta: Macrocystis holdfast, 3 m., rare. 

 Distribution/ — Tropicopolitan. 



Melita dentata (Kr0yer) 



Melita dentata (Kr0yer) : Sars, 1895, pp. 513-514, pi. 181, fig. 1.— Walker, 1898, 

 p. 282.— Shoemaker, 1930b, pp. 116-117 (with literature). — Gurjanova, 1951, 

 pp. 749-750, fig. 518.— Shoemaker, 1955a, pp. 49-50. 



Specimens from Friday Harbor, Washington, and southern Cali- 

 fornia differ from Sars' drawings by the broader sinus and shorter 

 tooth on the anteroventral corner of the head. 



Material. — pt. dume: short brown algae, rare (11 per sq. m.); 

 coralline algae, rare (9 per sq. m.). 



Distribution. — Circumpolar subarctic-boreal, in the western 

 Atlantic recorded as far south as Martha's Vineyard, and in the 

 eastern Pacific as far south as Corona del Mar, California; depth 

 range, 0-113 m. 



Melita sulca (Stout) 



Figures 22, 23 



Calinipharqus sulcus Stout, 1913, pp. 641-642. 



Melita palmata (Montagu) : Shoemaker, 1941b, p. 187. — Hewatt, 1946, p. 199 

 (not Montagu, see Stebbing, 1906). 



Diagnosis. — Urosomal segment 1 with one mediodorsal tooth, 

 urosomal segment 2 with one pair of small dorsolateral teeth on 

 each side, each pair enclosing one seta, all other segments dorsally 

 smooth; male second gnathopodal palm expanded and setose as in 

 Melita palmata, dactyl closing on subpalmar medial surface in ter- 



