Studies iu Laguna Amphipoda. 645 



Joint. Uropod 1 long-, the peduncle longer than the ranii ; the outer 

 ranius siightly the long-er and broader. Uropod 2 slightly longer 

 than 1. Uropod 3 prominent, though easily broken oif; the peduncle 

 shorter than the rami; the outer ranius with Clusters of spinules on 

 the outer edge; the inner ramus but sparsely spinöse; both with 

 numerous spinules at apex, extending somewhat beyond uropod 1. 

 Telson cleft, longer than broad, the apices tridentate with a seta in 

 €ach indentation. 



Color, dull. bluish green, with violet antennae. The females 

 carrying green eggs. 



L. 5—8 mm. 



Kelp holdfast from deep water. Laguna Beach, Calif. 



Genus Keof/anitnarojysis n, ff. 



Body slender, strongly arched. Head without rostrum; side- 

 lobes produced roundly between the first and second antennae. Eyes 

 well developed. Side-plates 1—4 of about equal depth; the fifth 

 shallow, bilobed. Antenna 1 the louger, accessory flagellum one- 

 jointed. Upper lip rounded. Lower lip with inner plates. Mandible 

 normal, second and third joints of the palp subequal. Maxiila 1, 

 inner plate with few setae ; outer plate with seven spines. Maxiila 2, 

 inner plate fringed a short distance from apex down inner margin. 

 Maxillipeds with elongate palp. Gnathopod 2 the larger, differing 

 in shape in male and female, large in the male. Pereiopods slender, 

 the second Joint somewhat expanded in pereiopods 3—5. Uropod 3 

 well developed, but not elongate, the outer ramus larger and 

 somewhat longer than inner. Telson small, partly cleft. 



Neogafnmaropsis antennatus n, sp. 



Eyes of good size, black, lateral. Side-plate 4 excavate behind ; 

 side-plate 5 with the front lobe the deeper. Antenna 1 stout, pe- 

 duncle and flagellum subequal; the first and second joints of the 

 flagellum subequal in length, the thiwd much shorter; flagellum with 

 17 — 18 joints; accessory flagellum 1-jointed, about half as long as 

 the first Joint of the primary flagellum. Antenna 2 shorter, stout; 

 peduncle longer than flagellum, the last two joints longest and sub- 

 equal in length; flagellum stout, 9— 10-jointed. Mandible, molar 

 large, three or four spines in spine-row; cutting plates dentate; palp 

 large, the second and third joints about equal in length, the third 



