119 



Gen. 31. Kerguelenia, Stebbing, 1888. 



Body extremely short and compact, with the coxal plates very large 

 and deep, especially those of the 4th pair. Antennae in both sexes short, the in- 

 ferior much more slender than the superior, the latter only modified in the 

 male. Oral parts poorly developed. Epistome not projecting. Ma,ndibU-> 

 blnnted at the tip, without any distinct cutting edge or molar expansion, 

 palp slender originating at the tip of the mandible. Maxillae extremely small, 

 though composed of the usual parts. Maxillipeds with the masticatory and 

 basal lobes rudimentary, palp elongate, with the dactylus styliform. Both 

 pairs of gnathopoda slender and elongate, the anterior nearly naked and 

 terminating with a pointed extremity, the dactylus extending in the same 

 line as the propodos, upon which it is scarcely movable; the posterior ones 

 finely hairy in their outer part, propodos produced beneath the extremely 

 small dactylus so as to form a very minute chela. Anterior pereiopoda slender 

 posterior ones short and robust, with the meral joint considerably expanded, 

 basal joint of 3rd pair nearly linear, that of the 2 last pairs large and lami- 

 nar. Last pair of uropoda extremely small, with rudimentary rami. Tel- 

 son likewise very small, rounded, entire. 



Remarks. - - As to the general habitus of the body, this genus, recently 

 established by the Eev. Mr. Stebbing, somewhat recalls the genus Aciclo- 

 stoma, with which it also agrees in the structure of the caudal appendage and 

 in the superior antennae only being modified in the male. In several other 

 essential characters it differs, however, very materially both from that genus 

 and from the other Lysiannassidae, thus in the poor development of the oral, 

 parts and in the peculiar structure of the anterior gnathopoda, The dis- 

 covery of a well marked northern species of this remarkable genus is of 

 considerable interest. 



54. Kerguelenia borealis, G-. 0. Sars, n. sp. 



(PI. 40, fig. 2). 



Bod}- very compact and strongly built, with the back rounded and 

 more or less sharply curved. Cephalon longer than the 1st segment of meso- 

 some, slightly produced in front between the bases of the superior antenna-, 

 lateral corners but little projecting and nearly rectangular. Anterior coxal 

 plates more than 3 times as deep as the body; 1st pair narrowly rounded 

 at the tip ; the 2 succeeding one's subtruncated ; 4th pair excedingly large, 

 very deeply emargiiiated posteriorly and forming below the emargination a 

 large linguiform lobe extending posteriorly so as nearly to encompass the 

 5th pair; the latter obliquely rounded, slightly bilobed below and a little 



