KoNGL. SV. VET. AKADEMIENS HANnLINGAU. BANO. 22. N:0 7. 1 1)1 



of tlie flagelluin as long as the peduncle, tapering: inferior pair rather longcr tlum tlie superior. 

 First pair of guathopoda luiving the oarpus inferiorly advanced to qiiite luilf the length of the 

 propodos; dactylos short: secoiid pair closely resembling the first. Pereiopoda subeqiial; poste- 

 rior pair having the basos nearly rectangular, the infero-posterior distal angle subaciite. Penul- 

 timate pair of pleopoda longer than the preceding and nearly as long as the idtimatu; nltimate 

 pair having the peduncle three times as long as the telson, and not serrated upon the interiör 

 distal margin. Telson lanceolate.y 



7. HYPERIA SPIMGERA, n. sp. 



Pl. X, fig-. 33—39. 



Diagn. Caput cnrtuii), latuni, segmenta duo priora peraji longitudiue ajquans. Segmenta omnia j)«W 

 libera. Carpus pechmi perwi primi paris dilatatus, paullo productus: margo posterior 

 vix vel indistincte incisus, spinis validis instructus. Carpus pedum secundi paris productus; 

 margo anterior processus carpalis dimidium marginis posterioris metacarpi longitudine fere 

 a3quans. Metacarpus pedum primi et secundi parium spinis validis parce instructus; margo 

 posterior incisus, spinigerus, minute serratus; dactylus longus. Pedes tertii ac quarti 

 parium pedibus parium duorum prascedentium paullo longiores, spinis destituti. Pedes 

 parium trium ultimorum duobus prascedentibus non longiores; carpus pedum quinti paris 

 tibia brevior, non serratus, sed capillis brevissimis fimbriatus. Latera segmentorum plei 

 post rotundata. Pedunculus piedum uri ultimi paris duplo longius quam latius. Telson 

 longius quam latins, segmen to ultimo uri brevius, pedunculum pedum uri ultimi j^aris lati- 

 tudine fere a3quans, sed dimidio pedunculi ejusdem longius. 



The head is short and broad, as long as the first two pera3onal segments together. All the 

 percBonal segments are free. The carpus of the first pair oi piercaopoda is dilated, somewhat 

 produced; the hind margin is scarcely notched, provided with strong spines. The carpus 

 of the second pair is produced; the front margin of the carpal process is produced and is 

 almost half as long as the hind margin of the metacarpus. The metacarpus of the first 

 two pairs is sparingly set with strong spines; the hind margin is notched and minutely 

 serrated, each notch carrying a spine; the dactylus is long. The third and fourth pairs 

 are only a little longer than the two preceding pairs, and without spines. The last three 

 pairs are not longer than the third and fourth pairs; the carpus of the fifth pair is shorter 

 than the tibia, not serrated but fringed with verv short hairs. The lateral parts of the 

 pleonal segments are rounded. The peduncle of the last pair of uropoda is twice as long 

 as broad. The telson is longer than broad, and shorter than the last ural segment; it is 

 almost as broad as the peduncle of the last pair of uropoda, hut more than half as long 

 as the same peduncle. 



Colour. Yellowish. 



Length, 12—22 mm. 



Hab. The Arctic region: Spitzbergen, oft' the Northern coast of Norway. The Northern tem- 

 perate region: ofi' the South coast of England. (D. M.; F. M.; S. M.) 



