86 CARL BOVALLIUS, AMPHIPODA HYPERIIDEA. I. 2. HYPERIID^E. 



of the first two pairs of peraeopoda, as represented in the original corresponding drawings, 

 their identity, in my opinion, is very problematical. 



Spenck Bate and Westwood at the same occasion described another new species, 

 which must be referred to the genus Etyperoche viz: Hyperia prehensilis. 



In 1870 A. Boeck described Metoecus abyssorum, afterwards called Tauria abyssorum, 

 and here below mentioned as Hyperoche abyssorum. The author of this treatise 

 proposed in 1887 the name Hyperoche Luetkeni 1 ) for the animal more closely de- 

 scribed here below, p. 97. Stebbing in his Report on the Challenger Amphipoda gives 

 in 1888 a full description of a new species, for which he proposes the name Hy- 

 peroche cryptodactylus. Here beloAv I describe a new species under the name Hy- 

 peroche picta. 



Thus the genus includes to-day seven species or eight, if Hyperoche tauriformis 

 may be a distinct species. 



A. The last three pairs of peraopoda are distinctly longer than the two next 



preceding pairs _ 1. H. Kroeyeri. 



B. The last three pairs of perasopoda are not longer than the two next preced- 

 ing pairs. 



b 1. The anterior margin of the carpal process, and the hind margin of the 



metacarpus of the first two pairs of perasopoda, are smooth, not serrated 2. II. prehensilis. 

 b 2. The anterior margin of the carpal process, and the hind margin of the 

 metacarpus of the first two pairs of peraeopoda are serrated. 

 bb 1. The lower anterior corner of the metacarjius of the first and second 

 pairs of pera?opoda is not produced. 

 bbb 1. The carpus of the third and fourth pairs of pera?opoda 



is narrow, linear, almost twice as long as the tibia 3. II. abyssorum. 



bbb 2. The carpus of the third and fourth pairs of peraeopoda 



is somewhat dilated, only a little longer than the tibia. 



bbbb 1. The tibial process of the first pair of perreo- 



poda is long, reaching nearly to the base of the 



carpal process. The dactylus of the second 



pair is not retractile... __ 4. II. Luetkeni. 



bbbb 2. The tibial process of the first pair of perao- 

 poda is long but not reaching to the base of 

 the carpal process. The dactylus of the second 



pair is retractile 5. H. cryptodactylus. 



bbbb 3. The tibial process of the first pair of peraso- 

 poda is very short. The dactylus of the se- 

 cond pair is not retractile fi. H. Nartinezii. 



bb 2. The lower anterior corner of the metacarpus of the first and second 

 pairs of perasopoda is produced into a broad curved, spoon-shaped 

 process 7. II. picta. 



x ) Through a most unhappy inadvertence from my own part at the printing of my "Arctic and Antarctic 

 Hyperids» the drawing of a would be new species was placed on plate 44, fig. 55 to 62, as representing Hy- 

 peroche abyssorum, A. Boeck; the diagnosis on page 564 is right and belongs to H. abyssorum. The animal 

 represented in the drawing is according to a thouroughly examination the male of Hyperoche Luetkeni, and 

 will be recorded here below, p. 99, under this name. 



