164 



CARL BOVALLIUS, AMPH1PODA HYPERIIDEA. I. 2. 



HYPERIID^E. 



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



PL IX, fig. 31—43 and PL X, fig. 1—17. 



Hyperia Latreillei, H. Milne Edwards. 

 Facsimile from H. Milne Edwards. Reoherches sur les Amphip., pi. 11. 



Diagll. Caput curtum, latum, segmentis duobus primis peraei brevius. Segmenta omnia percei libera. 

 Carpus pedum perct'i 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 inasqualibus; dactylus 

 longus. Pedes tertii et quarti parium pedibus parium duorum praecedentium paullo lon- 

 giores, spinis nonnullis instructi. Pedes parium trium ultimorum duobus praacedentibus non 

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

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

 longitudine asquans, pedunculo pedum uri ultimi paris latius, ac dimidio pedunculi ejus- 

 dem longius. 



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

 All the percconal segments are free. The carpus of the first pair of perceopoda is dilated? 

 scarcely produced; the hind margin is thrice notched, and provided 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. 

 Length. 15 — 25 mm. 



Hab. The Arctic region of the Atlantic; the 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.) 



