122 U.S. NATIONAL MUSEUM BULLETIN 25 8 



Material. — cayucos: Amaroucium sp., rare, goleta: Macrocystis 

 holdfast, 3 m., rare, corona del mar: tunicates and polychaete 

 tubes, rare; Spheciospongia sp., rare; Phragmatopoma masses, mod- 

 erately abundant, la jolla: Phyllospadix-corallme grid, rare (4 per 

 sq. m.). 



Maera lupana, new species 



Figure 20 



Diagnosis.- — No body segments dorsally dentate; posterior edge of 

 third pleonal epimeron nearly straight, posteroventral corner with 

 small tooth; coxa 1 not serrate ventrally; article 6 of gnathopod 2 

 nearly twice as long as broad, palm slightly oblique, bearing 2 shallow 

 excavations, 2 short, broad teeth and one tooth defining palm, article 

 7 with slight inner basal protuberance; no distal articles of pereopods 

 broadened, article 7 with small accessory claw and setae; uropod 3 

 short, not extending beyond ends of uropods 1-2, with short, broad, 

 but subacute rami; uropods stunted; telson short, each lobe broad 

 and apically notched, both lobules acute, medial shorter and nar- 

 rower than lateral; flagellar articles of antennae reduced to 4 or 5. 

 Males and females identical. Maximum length, 4.0 mm. 



Holotype. — AHF No. 618, male, 3.2 mm. 



Type locality. — Barnard station 41, Goleta, California, July 6, 

 1961, rhizomes of Macrocystis pyrifera, 3 m. (110 specimens). 



Relationship. — Differing from most other species of Maera (see 

 antenna 2 of M. vigota herein) by the greatly shortened antennal 

 flagella; related to M. simile (Stout, see J. L. Barnard, 1959) and M. 

 smirnovi (Bulycheva, 1952) but differing by the short antennae, the 

 less oblique palm of gnathopod 2, and the very much shortened 

 uropods. 



Material. — The type locality, abundant. 



Maera simile Stout 



Maera simile Stout, 1913, pp. 644-645. — Shoemaker, 1942b, p. 12— Hewatt, 

 1946, p. 199.— J. L. Barnard, 1959, pp. 24-25, pi. 4; 1964a, p. 222. 



Maera inaequipes: Shoemaker, 1941b, p. 187. — J. L. Barnard, 1954a, pp. 16-18, 

 pis. 16-17 (not Costa, 1851, see Stebbing, 1906, for reference). 



Specimens of sample 46-G-8 are aberrant because of the distal 

 amalgamation of the palmar teeth of male gnathopod 2. 



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

 m.); tunicates and sponges, rare; Macrocystis holdfast, rare, cayucos: 

 buried cobbles, rare; Macrocystis holdfast, moderately abundant; 

 Phyllospadix roots, rare, hazard canyon: holdfasts of Egregia and 

 Laminaria, rare, goleta: Macrocystis holdfast, 3 m., very abundant; 



