AMPITHOIDAE FROM SOUTHERN CALIFORNIA — BARNARD 25 



samples with 151 specimens), 43 (10). Estero de Punta Banda 

 (Ensenada), Mar. 21-23, 1951, coll. Dr. J. L. Mohr (20); Laguna 

 Beach, Cahf., Jan. 24, 1948, coll. Dr. J. L. Mohr (8); Coronado Yacht 

 Harbor, San Diego Bay, Mar. 19, 1950, coll. Dr. J. L. Mohr (10). 



Records: Cahfornia intertidal at Cayucos, Hazard Canyon Reef, 

 Point Fermin, Corona del Mar, Laguna Beach, San Diego Bay, La 

 Jolla, Santa Catalina Island, Estero de Punta Banda, Baja California. 



Remarks: Ampithoe pollex is very closely related to A. jolki, 

 Gurjanova (1938 and 1951); all of the differences that are noted in 

 antennae and gnathopods between the drawings herein and those of 

 Gurjanova (1951) could be attributed to mounting techniques or 

 expressions of infraspeciation. 



Distribution: Bermuda; eastern Pacific from Oregon to northern 

 Baja California. 



Ampithoe ramondi Audouin 



Figures 15, 16 



Ampithoe ramondi. — Shoemaker, 1942, p. 40. — J. L. Barnard, 1955, pp. 28-29 

 (with references). 



Diagnosis: Second and third pleonal epimera rounded behind; 

 article 5 of male gnathopod 1 shorter than 6, hind lobe truncate, 

 poorly developed, article 6 rectangular and rather slender, palm very 

 oblique and poorly developed but defined by a strong spine, finger 

 overlapping palm; gnathopod 2 with obhque and excavate palm 

 strongly defined by a subacute process, distal anterior end of article 6 

 strongly produced, heavily setose, article 6 rather long for the genus, 

 with a moderately developed, broad and blunt hind lobe, article 2 

 with a large blunt lobe at anterodistal corner; article 2 of pereopods 

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

 antenna 1 setose, antenna 1 longer than antenna 2, flagellum 2.5 

 times as long as flagellum of antenna 2, antenna 2 moderately setose, 

 flagellum slender, shghtly longer than peduncular article 5; lateral 

 apical lobule of lower lip projecting strongly, medial lobule very 

 broad, blunt, scarcely projecting; coxa 1 produced forward; peduncu- 

 lar process of uropod 1 vestigial. Body bleached clear in alcohol, 

 eyes dense eosin in color. 



Female: Gnathopod 1 like that of male, gnathopod 2 typical of 

 Ampithoe, with short article 5 having a somewhat broader lobe than 

 normal, palm obhque, slightly concave. 



Material: Velero stations 1378 (1), 4861 (2), 4938 (2), 5631 (2), 

 6206 (5). 



Records: The medial apical lobule of the lower lip figured by 

 Chevreux and Fage (1925) (as A. vaillanti) is more slender and more 

 projecting than in the present material from California. 



