GAMMARIDEAN AMPHIPODA 133 



by a broad sinus, below which occurs a subconical keel on the dorso ven- 

 tral midaxis of the head, below which the keel extends ventrally be- 

 tween the cephalic lobes to meet the modified upper lip. 



Material. — Station 7358, female, 5.5 mm. 



Distribution. — Southern California to middle Baja California, 

 976-1095 m. 



Phoxocephalidae 



Harpiniopsis Stephensen 

 Harpiniopsis emeryi J. L. Barnard 



Ilarpiniopsis emeryi J. L. Barnard, 1960b, p. 334, pi. G9 ; lOGfia, p. 84. 



Material.— Stations 7229 (1),7231 (3). 



Distribution. — Southern California to middle Baja California, 

 341:-2702 m. 



Harpiniopsis epistotnata J. L. Barnard 



Ilarpiniopsis epistomatus J. L. Barnard, 19S0b, pp. 326-328, pis. 62, 63. 

 Harpiniopsis epistotnata J. L. Barnard, 196Ga, p. 85. 



j\L\TERiAL.— Stations 7234 (3), 7235 (1),7358 (7). 

 Distribution. — Southern California to middle Baja California, 

 371-1626 m. 



Harpiniopsis excavata (Chevreux) 



Earpinia excavata Chevrenx, 1887, pp. 3-5; 1900, pp. 37-38, pi. 6, fig. 1.— Steb- 

 bing, 1906, pp. 142-143; 1908, pp. 73-74; 1910, p. 452.— K. H. Barnard. 1925, 

 pp. 340-341.— Chevreux, 1927, p. 73 ; 1935, p. 74.— Schelleuberg, 1955, p. 193.— 

 J. L. Barnard, 1960b, p. 353; 1962a, pp. 47-50, figs. 37, 38; 1964b, pp. 18-21, 

 fig. 16. 



Harpiniopsis sanpedroensis J. L. Barnard, 1960b, pp. 328-330, pis. 64, 65. 



Harpiniopsis excavata. — J. L. Barnard, 1966a, p. 85. 



A specimen 13.0 mm long from 7229 has a long tooth on pleonal 

 epimeron 3 like the figures of Barnard (1962a) and Barnard (1960b, 

 =n. sanpedroensis). It is the largest known specimen of the species 

 and is exceedingly setose; for example, it has 20 setae on the outer 

 ramus of uropod 2 and 15 setae on the expanded anterodistal edge 

 of article 2 on pereopod 5. The proximal end of article 2 of pereopod 

 4 has a distinct, nasiform posterior cusp just at the juncture with the 

 coxa. 



One of the specimens of 7228 has the gland-cone of antenna 2 poorly 

 developed. 



Harpiniopsis excavata and H. abyssalis Pirlot (1932) are very simi- 

 lar and may be difficult to distinguish in juvenile stages because the 

 disproportionate swelling and addition of setae along the anterodistal 

 margin of article 2 on pereopod 5 in U. excavata presumably develops 



