212 



CARL BOVALLIUS, AMPHIPODA HYPERIIDEA. 1. 



HYPERim^. 



U. HYPERIA LUZONI, TH. STEBBING, 1888. 



Diagn. Caput longum et altum, segmeuta quattuor prima perasi longitudine requans. Segmenta duo 

 priora p«YB< coalita, cetera libera. Carpus pedum percei primi paris vix dilatatus, non 

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

 cessus carpalis dimidio uiarginis posterioris metacarpi brevior. Metaoarpus pedum ytxixm 

 paris spinam uuam uuirgini anteriori affixam gerens; margo posterior incisus, indistincte 

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

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

 Pedes tei"tii ac quarti painum pedibus parium duorum prascedentium longiores; carpus 

 sjjinis duabus longis instructus; metacarpus indistincte serratus. Pedes parium trium ulti- 

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

 pedum quinti ac sexti parium tibiarii longitudine squans; carpus pedum septimi paris 

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

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

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

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



The kead is long and deep, as long as the first four perreonal segments together. The first 

 two jfwcBona/ 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 halfas 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 pleonal 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. 



Coloiir. ? 



Length. 3 or 4 mm, (»three-twentieths of an iuch, 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 liuoni, TH. STEBBING, 



»Report on the Araphipoda". Yoy. of H. M. S. Challenger. 

 Zoology. Vol. 29, p. 1382, pl. 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 iiearest 



