30 ABERRANTIA. 



A MPHIP ODA , D ULWHIID^E, 



Genus DULICHIA (Kroyer). 



DuUchia. KROYER, Nat. Tidsk. n.s. i. p. 521. Voy. en Scand. pi. xxiii. 



fig. 1. S PENCE BATE, Ann. Nat. Hist. xx. p. 526. 

 Dyopedos. SPENCE BATE, Ann. Nat. Hist. 2 ser. xix. p. 150. 



Generic character. Superior antennae longer than the in- 

 ferior. Inferior antennae inserted posteriorly to the superior. 

 Gnathopoda chelate. Pereiopoda sub equal, having neither the 

 coxse nor basa developed into scales. Three anterior pairs of 

 pleopoda normal ; fourth and fifth terminating in two styliform 

 rami ; sixth obsolete. Telson single, lanceolate. 



IN this genus the animals have the bodies long and 

 narrow; the eyes normal; the superior antennas longer 

 than the inferior, both pairs carrying short flagella. The 

 inferior pair arise farther back than the superior. The 

 hands of the first two pairs of legs are more or less 

 chelate. All the legs have the first joint small and squa- 

 miform, that of the last two pairs being fused with the 

 fifth segment of the body. Each of the caudal appen- 

 dages terminates in two styliform rami. The middle tail- 

 piece is single and pointed. 



This genus appears to be essentially arctic. It was 

 from thence that Kroyer obtained the type of the genus, 

 specimens of which we have seen attain the length of one 

 inch and a quarter. The species taken on the northern 

 shores of this island scarcely reach to the length of a 

 quarter of an inch, while those from the western shores 

 are still smaller. 



