212 



CARL BOVALLIUS, AMPHIPODA HYPERIIDEA. I. 2. 



HYPERIID^E. 



14. HYPERIA LUZONI, TH. STEBBING, 1888. 



Diagu. Caput longum et altum, segmenta quattuor prima perasi longitudine requans. Segmenta duo 

 priora percei coalita, cetera libera. Carpus pedum pertei primi paris vix dilatatus, non 

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

 cessus earpalis dimidio marginis posterioris metacarpi brevior. Metacarpus pedum primi 

 paris spinam imam margini anteriori affixam gerens; margo posterior incisus, indistincte 

 serratus, spinis tribus brevissimis instructus; metacarpus pedum secundi paris spinas duas 

 margini anteriori affixas gerens, margo posterior non serratus, levis; dactylus longus. 

 Pedes tertii ac quarti pariinn pedibus parium duorum prascedentium longiores; carpus 

 spinis duabus lougis instructus; metacarpus indistincte serratus. Pedes parium trium ulti- 

 morum duobus praecedentibus non longiores; femur pedum septimi paris latum; carpus 

 pedum quinti ac sexti parium tibiam longitudine a;quans; carpus pedum septimi paris 

 tibia brevior; metacarpus non serratus. Latera segmentorum plei post angulata. Pedun- 

 culus pedum uri ultimi paris plus quam duplo longior quam latior. Telson rotundatum, 

 non latius quam longius, segmentum ultimum uri longitudine sequans, pedunculo pedum 

 uri ultimi paris multo latius, ac dimidio pedunculi ejusdem multo longius. 



The head is long and deep, as long as the first four pergonal segments together. The first 

 two pergonal segments are coalesced, the following free. The carpus of the first pair of 

 perceopoda is scarcely dilated, and not produced. The carpus of the second pair is a little 

 dilated, and produced; the front side of the carpal process is not half as long as the hind 

 margin of the metacarpus. The metacarpus of the first pair has a single bristle on the 

 front margin, and the hind margin is notched and provided with three very short spines, and 

 faintly serrated. The metacarpus of the second pair has two bristles on the front margin, 

 and the hind margin is smooth, not serrated; the dactylus is long. The third and fourth 

 pairs are longer than the two preceding; the carpus has two bristles; the metacarpus is 

 faintly serrated. The last three pairs are not longer than the third and fourth; the femur 

 of the seventh pair is broad; the carpus of the fifth and sixth pairs is as long as the tibia, 

 that of the seventh is shorter than the tibia; the metacarpus is not serrated. The lateral 

 parts of the pleoual segments are angulated. The peduncle of the last pair of uropoda 

 is more than twice as long as broad. The telson is rounded, not broader than long, and 

 fully as long as the last ural segment; it is much broader than, and much more than half 

 as long as, the peduncle of the last pair of uropoda. 



Colour. ? 



Length. 3 or 4 mm, (»three-twentieths of an inch, exclusive of the antennae». Stebbing). 



Hab. »China Sea, off Luzon; Lat. 16°35'N.; Long. 117° 47' E.; surface; surface temperature 76° 

 5'; one specimen, young male. January 1875; Zebu Habour, Phillippines; surface. Two 

 specimens from this locality appear also to belong to this species» (Ch E. Stebbing). 



Syn. 1888. Hyperia luzoni, TH. STEBBING. "Report on the Amphipoda». Voy. of H. M. S. Challenger. 



Zoology. Vol. 29, p. 1382, pi. 166 A. 



As I have not seen any specimen of this species I take from Stebbing the 

 characteristics which are necessary for distinguishing Hyperia luzoni from its nearest 



