KONGL. SV. VET. AKADEMIENS I1ANDLIN(5AR. KANl;. 22. N:() 7. 



195 



8. HYPERIA ÅGILIS, J. D. DANA, 1852. 



Hyperia agilis, Dana. 

 Facsimile from Dana. U. S. Expl. Esp. Crust. 11, pl. 67, tig. 11, a—d. 



Fig. 1. The aiiimal from the side. 2. Frout-view of tlie liead. 3. The second pair of aiiteiiuiB. 4. The seventh 

 pair of perseopoda. 



Diagu. Caput medioore, seginentis duobus primis peraji longius. Segmenta omnia perwi libera. Carpus 

 peclum percei primi paris dilatatus, paullo productus(?). Carpus pedum secundi paris productus; 

 margo anterior processus carpi dimidio rnarginis posterioris metacarpi nen longius. Femur 

 pedum prinii et secundi pariuni angustum; dactylus longus, rectus. Pedes tertii ac quarti 

 parium pedibus parium duorum prsecedentium multo longiores, spinis brevibus instructi. 

 Pedes parium trium ultimorum duobus praäcedentibus longioi-es, spinis brevibus instructi; 

 carpus pedum quinti paris tibia longior, non serratus sed spinis paucis instructus. Latera 

 segmentorum j?lei post angulata. Pedunculus pieihirn uri ultimi paris plusquam duplo lon- 

 gior quam latior. Telson segraento ultimo uri brevius ac tertiam parteiii pedunculi pedum 

 uri ultimi paris longitudine non asquans. 



The head is moderately large, longer than the first two perajonal segments together. All the 

 perceonal segments are free. The carpus of the first pair oi peixeopoda is dilated, and a little 

 produced(?). The carpus of the second pair is produced; the front margin of the carpal 

 process is half as long as the hind margin of the metacarpus. The femur of the first two 

 pairs is narrow; the dactylus is long and straight. The third and fourtli pairs are much 

 longer than the two preceding pairs, set with short bristles. The last three pairs are longer 

 than the two preceding pairs, and are set with short bristles; the carpus of the fifth 

 pair is longer than the tibia, not serrated, hut set with a few short bristles. The lateral 

 parts of the pleonal segments are angulated behind. The peduncle of the last pair of 

 uropoda is more than twice as long as broad. The telson is shorter than the last ural 

 segment, and not a third as long as the peduncle of the last pair of uropoda. 



Coloiir. »Mostly dirty purple, with purplish red in basal joints of legs.» (Dana.) 



Length. »Three to four lines.» (Dana.) 



Hab. »The Pacific, Lat. 41° South; Long. 76° 25' West. Collected several specimens. April 

 5, 1839, some of which were in the water-cavity of Salpas; also between New Zealand 

 and New Holland.» (Dana.) 



