575 



lateral corners rectangular, with the lower edge gently curved. Anterior pairs 

 of coxal plates but little deeper than the corresponding segments; 1st pair 

 ratlier small and rounded at the tip, 5th pair with the anterior lobe not as 

 deep as the preceding pair, and evenly rounded. Last pair of epimeral plates 

 of raetasome produced at the lateral corners to a short obtuse point, posterior 

 edge sKghtly curved. Eyes very large, broadly oval, with bright red pigment. 

 Superior antennae nearly attaining ^/s of the length of the body, 2nd joint of 

 the peduncle much the longest, 3rd joint exceeding the 1st in length, flagellum 

 not attaining the length of the last 2 peduncular joints combined, but 

 composed of aboiit 10 articulations. Inferior anteunse fully as long as the 

 superior, the 2 outer joints of the peduncle rather elongated, flagellum not 

 attaining the length of those joints combined. Anterior lip obtusely produced 

 in front. Mandibular palps rather slender. Anterior gnathopoda with the 

 carpus elongated and but slightly expanded below, ])ropodos about same 

 length, but considerably broader, oval triangular in form, with the lower 

 edge strongly curved in the middle, dactylus rather elongated, and minutely 

 dentated inside. Posterior gnathopoda in female scarcely longer, but nuich 

 more strongly built than the anterior, carpus very short, with a small 

 setiferous lobe below, propodos very large, oval, palm nearly straight and 

 longer than the hind margin, being defined below by an obtuse angle, palmar 

 edge minutely serrulated, and armed in its lower part with 3 successive 

 spines, dactylus long and slender; those of male very largel}' developed, with 

 the propodos extremely large and oblong oval in form, fully twice as long 

 as it is broad, and densely clothed with delicate bristles, palm forming in 

 front of the middle a broad expansion divided into 2 dentiform projections, 

 dactylus very strong and curved. The 2 anterior pairs of pereiopoda with the 

 meral joint nearly as long as the 2 outer ones combined; the 3 posterior pairs 

 successively increasing in length, and having the basal joint oblong oval in 

 form. Last pair of uropoda with the rami a little longer than the basal part 

 and mucroniform in shape, terminating in a simple acute point. Telson some- 

 what longer than it is broad, tip obtusangular, with 2 small spines on either 

 side. Body banded with a beautiful reddish orange pigment, and having 

 besides along the sides a series of irregular patches of a golden yellow colour, 

 caused by some opaque matter lying inside the integuments; ova in the 

 marsupial pouch bright red. Length of adult female 6 mm, of male about 

 the same. 



RanarJi's. — This form was fii'st anounced by Boeck at the meeting 

 of the Scandinavian naturalists in 1860, as the type of a new genus. The 

 Ncenia tuberculosa of Sp. Bate, described some years later, is undoubtedly the 

 same form. It may be regarded as the type of the present genus. 



