GAMMARIDEAN AMPHIPODA 101 



Distribution. — Cosmopolitan in tropical and temperate seas. The 

 small body size, less than 2.0 mm., and slenderness of this species 

 result in its loss through sorting screens utilized in this survey, hence 

 the poor recovery of specimens. 



Corophiidae 



Cerapus tubularis Say 



Cerapus tubularis Say: J. L. Barnard, 1962a, pp. 61-63, figs. 28, 29 (with syn- 

 onymy) ; 1964a, p. 219. 



Material. — carmel: Phyllospadix-pelvetiid grid, rare (5 per sq. 

 m.). cayucos: Phyllospadix-pelvetiid grid, rare (11 per sq. m.); 

 Laminaria and corallines, rare, hazard canyon: Phyllospadix, rare. 

 corona del mar: Phyllospadix-coTsdline grid, moderately abundant 

 (106 per sq. m.) ; loose rocks, rare; mixed red-brown algae, scarce. 

 la jolla: Phyllospadix-cora]lw.e grid, moderately abundant (498 

 per sq. m.) ; short-tufted red algal turf, scarce (66 per sq. m.) ; under- 

 rock grid, rare (4 per sq. m.) ; coralline algae, rare. 



Distribution. — Probably cosmopolitan in tropical and warm- 

 temperate seas; collected in the eastern Pacific Ocean from Carmel, 

 California to Bahia San Cristobal, Baja California, 0-37 m. The 

 scarcity of this species north of Pt. Conception indicates that it may 

 be near its northern limit in Monterey Bay. Forms a thick, pliable, 

 striped, cylindrical tube open at both ends. 



Corophium baconi Shoemaker 



Corophium baconi Shoemaker, 1934, pp. 356-359, fig. 1; 1949, p. 82. — J. L. 

 Barnard, 1959, p. 38; 1961, p. 182; 1964a, p. 219. 



Material. — cayucos: Phyllospadix-pelvetiid grid, rare (6 per sq- 

 m.); Macrocystis holdfast, rare; Amaroucium sp., rare, corona del 

 mar: calcareous worm tubes, rare; sponge, Spheciospongia sp., rare; 

 Phragmatopoma masses, moderately abundant, la jolla: sand- 

 inundated algae, at high-tide line, rare; underrock grid, rare (2 per 

 sq. m.) ; corallines under Phyllospadix, rare. 



Distribution. — Bering Sea to Peru, more common on benthos of 

 coastal shelf of southern California, 9-55 m., than in the intertidal. 



Corophium californianum Shoemaker 



Corophium californianum Shoemaker, 1934, pp. 359-360, fig. 2; 1949, pp. 76-77 — 

 J. L. Barnard, 1961, p. 182. 



Material. — goleta: submerged log, 8 m., the most abundant 

 species. 



Distribution. — Originally described from Monterey Bay in 48 

 fath. (88 m.); this is the second record. 



