636 Ampithoe 



lobes advauced in front of the inner. Mandible, 3*^ Joint of palp as long" 



as 2^, not expanded, with 5 setae (or spines) on apex. Maxilla 1, inner 



plate with 3 setae on inner luargin; 2^ Joint of palp with 5 spines on the 



dentate apex. Gnathopod 1, 5^^ Joint rather shorter than 6*. distally lobed, 



6*^ oblong, a little widened distally, palm oblique, defined by a palmar 



spine, the angle rounded off; finger with fine pectination followed by 5 



successively larger teeth. Gnathopod 2, 5*^ Joint cup-shaped, 



considerably shorter than 6*^*^, which is stouter but not 



longer than in gnathopod 1; palm minutely pectinate; finger 



as in gnathopod 1. Peraeopods 1 and 2, 2^ Joint broad 



proximally, narrower distally, 4*^ Joint widening distally, 



.^1?'^^' . but without rounded lobe. Pleopods with 2 cleft spines, 



Lower lip. ^^^^ ^ or 9 joiuts in the rami. üropod 1, peduncle little 



longer than inner ramus, outer the shorter. üropod 3 reaching 



beyond the others; peduncle longer than the rami; outer raraus with 2 



Short hooked spines, inner oval, slightly longer than the out«r, edged with 



4 or 5 spines or spinules. Telson short, almost circular, with an upturned 



Corner on either side of the broadly rounded apex. L. about 4 mm. 



Flinders Passage (lat. 10« S., long. 142 <> E.). Depth 15 m. 



9. A. humeralis (Stimps.) 1864 Amphithoeh., Stimpson in: P. Ac. Philad., p. 156 | 

 1888 A. h., T. Stebbing in: Rep.Voy. Challenger, v.2Q p. 351 | 1898 A. h., Calman in: 

 Ann. N. York. Ac, t-, 11 p. 271 t. 33." 



Body robust, rather compressed. Head, lateral lobes rounded. Side- 

 plate 5 large, subquadrate. Eyes small, rounded, dark. Antenna 1 nearly 

 as long asbody; flagellum more than twice as long as peduncle (Stimpson). 

 Antenna 1 more than half as long as body; 1^* and 2'^ joints subequal, 

 3^ very small; flagellum 2^2 times as,long as peduncle (Calman). Antenna 2 half 

 as long as body; flagellum not longer than antepenultimate Joint (penultimate?) 

 of peduncle (Stimpson). Antenna 2 stout; ultimate Joint of peduncle a 

 little shorter than penultimate; flagellum rather more than Vj^ length of 

 peduncle (Calman). Mouth-parts (Calman) nearly as in A. femorata, but 

 mandibular palp has 3*^ Joint longer than 2^ (not so in figure), not expanded. 

 Lower lip with bifid front lobes. Gnathopods 1 and 2 similar in the two 

 sexes, rather slender, and densely setose. Gnathopod 1, 5^^ Joint longer 

 than 6*^, 6*^ oblong, about 2^/^ times as long as broad, bind margin with 

 shallow distal coucavity near angle ofveiy short ti*ansverse palm ; finger serrate, 

 overlapping palm. Gnathopod 2, 5*^ Joint slightly longer than 6*^^, lobed 

 behind, 6*^ hardly more than twice as long as broad, palm short, transverse, 

 overlapped by finger. Peraeopods 1 and 2, 2^ Joint very large, broadly 

 oval, 4*^ widened distally and lobed. Peraeopod 3 very short, 2^ Joint 

 broad. Peraeopod 5 much longer than peraeopod 4. üropod 3 not reaching 

 beyond üropod 2; peduncle thrice as long as rami; outer ramus with 2 hooks, 

 inner lamellate, truncate, bearing setae. Telson small, obtusely tiiangular, 

 with a few setae on each side. L. 26 — 30 mm. 



Puget Sound. About low-water mark. 



10. A. femorata (Kreyer) ?1840 Amphitoe gaudichaudü, JH. Milne Edwards, 

 Hist. nat. Crust., v. 3 p. 31 ] 1845 Amphithoe femorata, Kreyer in : Xaturh. Tidsskr., ser. 2 

 v.l p.335 t. 3 f. 4 a — i I 1893 A. rubricata (part.) -j- Grubia crassicornis (part.)?, A. Della 

 Valle in: F. Fl. Neapel, t'.20 p.456; p. 466. 



