KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 22. N:0 7. 



83 



Genus 2. HYPEROCHE, C. BOVALLIUS, 1887. 



Me to ecus, 



Diagn. Caput magnum fere globosum. Perteon leve, epimeris distinctis instructum. Pedes perm 

 primi et seoundi parium cheliformes, carpus dilatatus et valde productus, processus carpi 

 compressus, cultriformis. Carpus pedum tertii ac quarti parium paullo dilatatus. Pedes 

 parium trium ultimorum longitudine subasquales, duobus prascedentibus non vel paullo 

 longiores. Pedes uri mediocres, non elongati. 



The head is large, almost globular. The perceon is smooth, with distinct epimerals. The 

 first and second pairs of perceopoda are cheliform, the carpus is dilated and very produced, 

 the carpal process is compressed, knife-shaped. The carpus of the third and fourth pairs 

 is somewhat dilated. The last three pairs are subequal in length, not, or only a little 

 longer than the two preceding pairs. The uropoda are mediocre, not elongated. 



Syn. 1838. Metoepus, H. KROEYER. »Gr0nlands Arafipoder». Det Kongl.Danske 



Videnskabs-Selskabs Naturvidensk. ogMa- 

 themat. Afhandlinger. Deel. 7, p. 288. 



H. Milne Edwards. 1840. Histoire Naturelle des Crustaces Tome 



3:me, p. 78. 



J. D. Dana. 1852. United States ExploringExpedition. Crusta- 



cea. Vol. 2, p. 981 and 1442. 



A. White. 1857 . A popular History of the British Crusta- 



cea, p. 207. 



A. Boeck. 1870. "Crustacea amphipoda borealia et arctica». 



Christiania Videnskabs-Selskabs Forhandl. 

 for 1870, p. 86 (6). 

 » 1872. De Skandinaviske og Arktiske Amphi- 



poder, p. 82. 



G. O. Sars. 1882. "Oversigt af Norges Crustaceer raetl fore- 



l0bige Bemserkninger over de nye eller 

 mindre bekjendte Arter». Cliristiania 

 Videnskabs-Selskabs Forhandl. for 1882, 

 p. 19 and 75. 

 — "Systematical list of the Amphipoda Hy- 



periidea». Bih. t. K. Sv. Vet. Ak. Handl. 

 Bd. 11. N:o 16, p. 17. 

 » » 1887. "Arctic and Antarctic Hyperids». Vega- 



Exp. Vetensk. Iakttagelser. Bd. 4, p. 563. 

 » » Th. Stebbing. 1888. "Report on the Amphipoda". Voy. of 



H. M. S. Challenger. Zoology. Vol. 

 29, p. 1398. 



When H. Kroeyer in 1838 established the genus Metoecus, he gave the following 

 generic diagnosis: 



»Pedes primi et secundi paris reliqvis permulto breviores, sed validi, manuqve 

 armati cheliformi. Articulus horum pedum quartus, qvi forma praeditus est triangu- 

 lari, nianum efficit, a cujus margine inferiori prodeunt pollex biarticularis anterior et di- 



1872. (Tauria, DANA.) 



1887. Hyperoehe, C. BOVALLIUS. 



