164 



CARL BOVALLIUS, AMPHIPODA HYPEKIIDEA. I. 2. 



HYPERIIDiE. 



3. HYPERIA LATREILLEI, H. MILNE EDWARDS, 1830. 



Pl. IX, fia-. 31—43 and Pl. X, fif?. 1—17. 



ti 



Hyperia Latreillei, H. Milne Edwauds. 

 Facsiraile from H. Milne Edwards, Recherches sur les Amphip., pl. 11. 



Diagn. Caput curtum, latum, segmentis cluobus primis jjeraji brevius. Segnienta oninia percei libera. 

 CKvims 2:>edum percci primi paris dilatatus, vix productus, margine posteriore ter inciso, spinisque 

 instructo. Carpus pedum secundi paris paullo productus. Metacarpus primi et secundi pa- 

 rium spinis parce instructus, margine posteriore serrato, dentibus ina3qualibus; dactylus 

 loDgus. Pedes tertii et quarti parium pedibus parium duorum pra?cedentium paullo lon- 

 giores, spinis nonnuUis instructi. Pedes parium trium ultimorum duobus prjecedentibus non 

 longiores; carpus pedum quinti paris tibia paullo longior, neo serratus. Latera segmentorum 

 plei post angulata. Pedunculus pedum uri latus. Telson. latum, segmentum ultimum uri 

 longitudine aäquans, pedunculo pedum uri ultimi paris latius, ac dimidio peduuculi ejus- 

 dem longius. 



The head is short and broad, a little shorter tban the first two perfeonal segments together- 

 All the perceonal segments are free. The carpus of the first pair of peraopoda is dilated» 

 scarcely produced; the hind margin is thrice notched, and pi-ovided with bristles. The carpus 

 of the second pair is somewhat produced. The metacarpus of the first and second pairs is 

 sparingly provided with bristles; the hind margin is serrated, with unequal teeth; the dac- 

 tylus is long. The third and fourth pairs are only a little longer than the first two pairs, 

 and are provided with a few spines. The last three pairs are not longer than the two preced- 

 ing; the carpus of the fifth pair is a little longer than the tibia, and not serrated. The 

 lateral parts of the pleonal segments are posteriorly angulated. The peduncle of the last 

 pair of uropoda is broad. The telson is broad, and as long as the last ural segment; it is 

 broader than the peduncle of the last pair of uropoda, and more than half as long as the 

 same peduncle. 



Colour. Yellowish to brown, the older animals darker than the young ones. 



Leugth. 15—25 mm. 



Hab. The Arctic region of the Atlantic; tiie Northern and Southern temperate regions 

 of the Atlantic; the tropical region of the Atlantic; the Baltic; the Mediterranean. 

 (D. M.: F. M.; K. M.; P. M.; S. M.; U. M.) 



