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This genus is a link between Hyperia and FEuthemisto, the 
form of the body and of the first two pairs of pereiopoda re- 
sembles Hyperia, but the elongated fifth pair and the long urus 
verge to Futhemisto. 
1. Hyperiella antarctica, C. Bovallius, 1887. 
Pl. 45, fig. 72—380. 
Syn. 1887. Hyperiella antaretica. CO. Bovallius. LL. c., p. 19. 
The head is very deep and short, both pairs of antenn&e 
are comparatively short (in the male), composed of few but 
long slender articles. The carpus of the first pair of pereio- 
poda is very broad; the carpal process of the second pair is 
longer than half the metacarpus. The metacarpus of the fifth 
pair is elongated, the anterior margin serrated like a comb. 
The metacarpi of the sixth and seventh pairs are not elongated. 
The telson equals a fourtk of the length of the peduneleskon 
the last pair of uropoda. 
Length 83—12 mm. 
Hab. "Antarctic Seas around Cape Horn. (5: MY Usb) 
Genus 5. Parathemisto, A. Boeck, 1870. 
Syn. 1870. Parathemisto. A. Boeck. Crustacea amphipoda borealia et 
arcetica, p. 7. 
This genus is most closely allied to the following genus 
Futhemisto, and ought to be regarded as a subgenus rather 
than as genus of its own. It differs from HFuthemisto only in 
the fifth pair of pereiopoda not being longer than the seventh. 
From Hyperiella by the elongated metacarpi of the last three 
pairs of pereiopoda. 
1. Parathemisto abyssorum, A. Boeck, 1870. 
P1. 45, fig. 81-—289. 
Syn. 1870. Parathemisto abyssorum. A. Boeck. L.ec., p. 7. 
1872. > > > De skandinaviske og ark- 
tiske Amphipoder, p. 85, 
JO 24 me IL 
The carpi of the third and fourth pairs of pereiopoda are 
only a little dilated, elongate-ovate, armed with a few long 
