GAMMARIDEAN AMPHIPODA 195 



hand) ; depth range, 0-11 in. This and the following species, 0. pacifica, 

 are a closely related pair meeting in southern California, 0. pacifica 

 slightly overlapping the former's range by submergence. 



Orchomene pacifica (Curjanova) 



Orchomenella pacifica Gurjanova, 1951, p. 287, fig. 155; 1962, pp. 174-177, figs. 



52, 53. 

 Orchomene pacifica: J. L. Barnard, 1962b, p. 92, fig. 13. 



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



Distribution. — Japan Sea to coastal shelf of southern California, 

 in southern California on the shelf mainly in depths of 46 to 183 m., 

 one record at 3 m. (above). 



Oedicerotidae 



Synchelidium sp. M 



A species to be described as new in a paper in preparation; char- 

 acterized by miniaturized pleonite 2. 



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

 laevigata, rare. 



Distribution. — Coastal shallows of southern California, 0-5 m. 

 especially on sand bottoms just seaward of .surf zone. 



Synchelidium shoemakeri Mills 



Synchelidium shoemakeri Mills, 1962, pp. 15-17, fig. 4. 



Material. — goleta: PhyUospadix-pehretud grid, rare. 

 Distribution. — -British Columbia to coastal shelf of southern 

 California, 0-183+ m. 



Synchelidium rectipalmum Mills 



Synchelidium rectipalmum Mills, 1962, pp. 17-19, fig. 5. 



Material. — la jolla: Phyllospadix-coraWme grid, scarce (33 per 

 sq. m.) ; underrock substrate, rare. 



Distribution. — British Columbia to Costa Rica (specimens at 

 hand), 0-183 4-m. 



Phliantidae 



Heterophlias seclusus escabrosa J. L. Barnard 



Heterophlias seclusus Shoemaker, 1933b, pp. 250-252, figs. 4, 5. 

 Heterophlias seclusus escabrosa J. L. Barnard, 1962b, pp. 79-80, fig. 5. 



These specimens show 9-10 subrounded castellations on the anterior 

 edge of the rostrum from dorsal view, not described for the stem sub- 

 species and overlooked by Barnard (1962b). They are present on 

 Barnard's original material but are less well developed than in these 

 large specimens 3.5-3.8 mm. long. 



