242 



CASL tiOVALLlUS, AMPHTPODA HYFERIIDEA. I. 2. 



The lateral parts of tlie pleonal segments are rounded behind. The lower front 

 corners of the femur, genu, and tibia of the last three pairs of pera3opoda are 

 rectangular, not produced. The inner ramus of the last pair of uropoda is 

 ovate 



The lateral parts of the pleonal segments are acutely produced behind. The 

 lower front corners of the femur, genu, and tibia of the last three pairs of pe- 

 ra^opoda are acutely produced downwards. The inner ramus of the last pair of 

 uropoda is narrowly elongate and sharp-pointed 3, 



HYPEEIIDtE. 



1. H. antarctica. 



II. ililatata. 



1. HYPERIELLA ANTARCTICA, C. BOVALLIUS, 1887. 



Pl. XI, tig. 42—51. 



Hyperiella antarctica, C. Bovallius. 

 Drawn from the type specimen by A. M. Westeegren. 



Diagn. Caput latum, segmentis tribus primis persei longius. Pedes perwi quinti paris capite ac pe- 

 raio conjunctis multo longiores. Anguli antero-inferiores femoris, genus et tibia3 pedum 

 parium trium ultimorum non producti nec acuti. Metacarpus pedum sexti ac septimi pa- 

 rium carpo baud longior. Latera segmentorum plei post rotundata. Pedunculus pedum 

 uri ultimi paris quam telson quater longior, ramus internus ovatiis. Telson segmento ul- 

 timo uri brevius, ac pedunculo pedum uri ultimi paris angustius. 



The liead is broad, and longer than the first three pera3onal segments together. The fifth pair 

 of j)era'opoda are much longer than the head and person together. The lower front corners 

 of the femur, genu, and tibia of the last three pairs are not produced, nor sharp-pointed. 

 The metacarpus of the sixth and seventh pairs is not longer than the carpus. The lateral 

 parts of the pleonal segments are rounded behind. The peduncle of the last pair of uro- 

 poda is four times as long as the telson; the inner ramus is ovate. The telson is shorter 

 than the last ural segment and uarrower than the peduncle of the last pair of uropoda. 



