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U.S. NATIONAL MUSEUM BULLETIN 25 8 



Figure 6. — Neomegamphopus roosevelti Shoemaker, male, 2.1 mm., station 46-K-l: a, 

 head; b, accessory flagellum; c, mandible. Female, 2.2 mm.: d, lower lip; e,f, maxilliped; 

 g,h, maxillae 1, 2; i, pleonal epimera 1-3, left to right. 



Atylidae 



Atylus levidensus J. L. Barnard 



Atylus levidensus J. L. Barnard: Mills, 1961, pp. 19-23, figs. 1, 4A. 



Material. — carmel: Phyllospadix, very rare, cayucos: Phyllo- 

 spadix-pelvetiid gpj^ scarC e (16 per sq. m.). hazard canyon: Phyllo- 

 spadix, rare. 



Distribution. — British Columbia to Hazard Canyon, California. 

 Abundant in the Puget Sound-Queen Charlotte Islands area but very 

 rare in California from Monterey southward, probably limited north 

 of Pt. Conception. This is one of the most striking species of amphipods 

 in this region, because of its ochraceous, clean, textured surface similar 

 to molded concrete. 



Bateidae 



Batea lobata Shoemaker 



Batea lobata Shoemaker, 1926, pp. 18-21, figs. 12, 13.— J. L. Barnard, 1962b, p. 81. 



Material. — goleta: Phyllospadix-pelvetud grid, rare (5 per sq. 

 m.). pt. dume: loose rocks, rare. 



Distribution. — Southern California, 0-9 m.; on mud bottom in 

 Morro Bay, California (material in hand). 



Batea transversa Shoemaker 



Batea transversa Shoemaker, 1926, pp. 13-18, figs. 8-11.— Hewatt, 1946, p. 204 — 

 J. L. Barnard, 1962b, p. 80, fig. 6. 



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

 Distribution. — Possibly a tropical species with northern limits 

 near Pt. Conception, rare in the intertidal of southern California but 



