194 



U.S. NATIONAL MUSEUM BULLETIN 258 



Figure 53. — Ocosingo borlus, J. L. Barnard, male, 2.0 mm., holotype, "Velero" station 

 6206, Bahia de San Ramon, Baja California: a, maxilliped; b, gnathopod 1; c, d, gnathopod 

 2; e, pereopod 1;/, coxa 4; g, h, i, pereopods 3, 4, 5. 



spadix-pelv etiid grid, rare (3 per sq. m.); Macrocystis holdfast, rare; 

 polychaete tubes and sponge scrapings, rare; sponge, rare to scarce; 

 Amaroucium sp., abundant. 



Distribution. — Monterey Bay, California, to Bahia de San Cristo- 

 bal, Baja California, 0-180 m., submerging below intertidal levels 

 south of Pt. Conception. 



Orchomene magdalenensis (Shoemaker) 



Orchomenella magdalenensis Shoemaker, 1942b, pp. 4-7, fig. 1. — Gurjanova, 1962, 



pp. 181-182, fig. 56. 

 Orchomene magdalenensis: J. L. Barnard, 1964a, pp. 231-232; 1964b, p. 95, fig. 



12, chart 2. 

 Tryphosa magdalenensis: Hurley, 1963, pp. 132-133. 



Although Hurley (1963) has transferred this species to Tryphosa, 

 that genus is well characterized by the tapering first coxa which 0. 

 magdalenensis does not have. 



Material. — la jolla, underrocks, rare. 



Distribution. — Bahia Magdalena, Baja California, to La Jolla, 

 California; in Bahia de Los Angeles, Gulf of California (specimens at 



