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



17 



rated. The carpus of the second pair is slightly longer than the metacarpus, produced, 

 not serrated. The metacarpi of the fifth and sixth pairs are twice longer than the carpi. 

 The seventh pair are shorter than the femur of the sixth pair; the femur of the seventh 

 pair is excavated at the posterior margin, almost as long as all the following joints together. 

 The lateral parts of the pleonal segments are obtusely rounded. The second and third 

 ural segments are free, not coalesced. The peduncle of the first pair of uropoda is a little 

 shorter than the rami (?); that of the second pair is much shorter than the rami; that of 

 the last pair is twice as long as the rami; the rami are serrated. The tehon is small, 

 lanceolate, as long as a fifth of the length of the peduncle of the last pair of uropoda. 



Colour. ?. 



Length. 18 mm. 



Hab. »The Powel Islands» (Spence Bate). 



Syn. 1862. Cyllopus Lucasii, SPENCE BATE. Catal. Amph. Crust. Brit. Museum, p. 



306, pi. 50, fig. 2. 

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



Exp. Vetensk. Iakttagelser. Bd. 4, 

 p. 556. 



Here follows the description of Spence Bate, completed with some characteristics 

 derived from the examination of the drawing. 



The head is slightly produced above and between the superior antennae; it is longer 

 than the three following peraeonal 1 ) segments. 



The first pair of antennas with downcurved point are as long as the head and the 

 two first segments of the pera?on. 



The second pair of antenna? are three fourths of the length of the first pair; the 

 flagellum is four-jointed, first joint long, second half as long, third longer than first, ter- 

 minal short and pointed, furnished inferiorly with a few hairs. 



The perceon is as long as pleon and the first segment of the virus. 



The first pair of perceopoda are robust. The carpus is very broad infero-anteriorly 

 produced to one third the length of the metacarpus, anterior and posterior margins deeply 

 serrated. The metacarpus is long-ovate, posterior margin deeply serrated. The dactylus 

 is pointed, slightly curved downward, the posterior margin serrated. 



The second pair of perazopoda have the carpus inferiorly produced in a straight 

 line to half the length of the metacarpus, posterior margin smooth, with two long hairs. 

 The metacarpus straight, slightly narrowing distally, posterior margin serrated, the serra- 

 tures increasing in depth anteriorly. The dactylus is stout, sharp. 



The third and fourth pairs are twice the length of the preceding, having the 

 carpus broad, with the infero-posterior margin oblique and serrated; the metacarpus is 

 not longer than the carpus, with the posterior margin serrated, and capable of being inflected 

 against the carpus. The dactylus is subulate, serrated toward the articular extremity. 



l ) Th. Stebbing justly remarks 1. c. that the word must be written perseon, as it is deriwed von Trepatoto. 



3 



K. Sv. Vet. Ak. Handl. Band. 22. N:o 7. 



