206 CARL BOVALL1US, AMPHIPODA HYPERIIDEA. I. 2. HYPEKIID^E. 



The fifth, sixth and seventh pairs are considerably longer than the two preceding 

 pairs. The femur is not fully as long as the three following joints together, and the 

 front margin is provided with a few short bristles. The carpus of the fifth pair is longer 

 than the tibia, that of the sixth quite as long as, and that of the seventh pair shorter than, 

 the tibia. The metacarpus is about as long as that joint in the third and fourth pairs, 

 and shorter than the two preceding joints together; the hind margins of the carpus and 

 metacarpus are serrated and provided with a few bristles. The dactylus is about a third 

 as long as the metacarpus. 



The pleon is a little longer than the whole peraeon; the first segment is quite as 

 long as the last two pleonal segments together. 



The urus is a little longer than the last pleonal segment. 



The uropoda. The first pair reach fully to the apex of the last pair; the peduncle 

 is narrow, linear and more than four times as long as broad; the inner ramus is much 

 more than half as long as the peduncle, elongate, acute, and serrated along the outer 

 margin; the outer ramus is much shorter than the inner. The second pair reach a little 

 beyond the apex of the peduncle of the last pair; the peduncle is narrow, more than three 

 times as long as broad, and a little longer than the inner ramus; the outer ramus is much 

 shorter than the inner; both rami are serrated as in the first pair. The peduncle of the 

 third pair is narrow, linear, not fully four times as long as broad, and nearly twice as 

 long as the inner ramus; the rami are equal in length. 



The telson is spade-shaped, twice as broad, and a little more than half as long, as 

 the peduncle of the last pair of uropoda. 



13. HYPERIA FABRE1, H. MILNE EDWARDS, 1830. 



PI. X, fig. 40—55. 



Hyperia Fabrei, H. Milne Edwards. 

 Facsimile from H. Milne Edwards. Hist. nat. des Crust., Ill, pi. 30, fig. 18. 



Diagn. Caput magnum, altum, segmentis quattuor primis perasi multo longius. Segmeata duo priora 

 percei coalita, cetera libera. Carpus pedum peror.i prirai paris vix dilatatus et paullulo 

 productus. Carpus pedum secundi paris paullo dilatatus, productus; margo anterior pro- 

 cessus carpalis dimidium marginis posterioris metacarpi longitudine sequans. Metacarpus 

 pedum primi et secundi parium spinam singulam margini anteriori affixam gerens; margo 

 posterior serratus, dentibus simplicibus; dactylus longus. Pedes tertii ac quarti parium 



