AMPITHOIDAE FROM SOUTHERN CALIFORNIA — BARNARD 15 



Records: California intertidal: Cayucos; Hazard Canyon Reef, 

 south of Morro Bay; Point Ferinin; Santa Cruz Island. 



Distribution: Bering Sea, Okhotsk Sea, Japan Sea to California at 

 Point Fermin, near Los Angeles. 



Ampithoe longimana Smith 



Figure 8 



Amphithoe [sic] longimana Smith, 1873, pp. 563-564. — Holmes, 1905, p. 509, fig. 

 Amphiihoe longimana. — Kunkel, 1910, pp. 87-90, fig. 34; 1918, pp. 147-149, fig. 43. 

 Amphithoe longimana. — Pearse, 1912, p. 376. 

 Ampithoe longimana. — J. L. Barnard, 1959, pp. 36-37, pi. 12. 



Diagnosis: Second and third pleonal epimera rounded behind and 

 at lower corners, no lateral ridges; articles 5 and 6 of male gnathopod 

 1 equal in length, slender, palm obsolescent, finger greatly overlapping 

 the end of article 6, hind edge of article 5 shallow, not lobed, broad, 

 fiat; male gnathopod 2 rather small, scarcely larger than gnathopod 1, 

 article 5 shorter than 6 and with subacute hind lobe not strongly 

 projecting, palm oblique, sinuous, sharply defined, finger fitting palm; 

 second articles of both gnathopods with anterodistal lobes; article 2 

 of pereopods 1-2 about 2.5 times as long as broad; ventral edge of 

 article 1 on antenna 1 with one or two spines; antenna 1 longer than 

 2, flagellum of antenna 1 about 3 times as long as that of antenna 2, 

 ilagella both poorly setose, outer apical lobule of lower lip slightly 

 longer than inner lobule, not appressed; coxa 1 produced forward; 

 peduncular process of uropod 1 vestigial. 



Female: Article 5 of gnathopod 1 slightly shorter than article 6, 

 palm better developed than in male; gnathopod 2 like that of male 

 but articles 5 and 6 shorter. 



Material: Same as Barnard 1959. 



Distribution: Atlantic coast of the United States, from Massa- 

 chusetts to Florida Bay, Fla.; Bermuda; Pacific America from Bahia 

 de San Quintin, Baja Cahfornia north to Morro Bay, Calif., confined 

 to embayments and lagoons. 



Ampithoe plea, new species 



Figures 9, 10 



Diagnosis: Second and third pleonal epimera rounded behind; 

 articles 5 and 6 of male gnathopod 1 equal in length, posterior edge 

 of article 5 with a truncate, rather broad lobe, article 6 rectangular 

 but not very slender, palm well developed, slightly oblique, well 

 defined, finger scarcely overlapping palm; gnathopod 2 in terminal 

 male with article 6 greatly elongated, the full hind margin representing 

 the palm, with a blunt process near the finger hinge, article 7 long, 



