C A RIDE A. 5(57 



very short. Outer maxillipeds have some short spinules at apex, and 

 on upper margin towards apex, but are not prominently hirsute or 

 pubescent. Hand of first pair not shorter than carpus, linear, two or 

 three times as thick as following pairs of legs. Six posterior legs 

 nearly naked, penult joint quite long; tarsus spinulous within. 

 Fourth and fifth joints of abdomen acute either side. 



HlPPOLTTE LAMELLICORNIS. 



Rostrum, longum verticaliter latissimum, fere ad tlioracis basin produc- 

 turn, apice bifidum, supra sinuosum, super cephalothoracem l-spi- 

 nosum, anterius Q-spini-dentatum, spinulis incequis, iotis inter se sub- 

 ceque remotis ; infra triangulatum, 2-dentatum. Antenna? internee 

 rostro parce longiores. Pedes antici gracillimi, 2dis paulo crassiores. 

 Pedes 2di Stiis vix breviores, carpo elongato, 7-articulato, articulo 

 carpi Stio longo. Tarsi ptdum sequentium fere inermes, spinulis 

 versus basin subtilissimis. Maxillipedes externi apice spinulosi, arti- 

 culo ultimo supra pubescente. 



Beak long, broad lamellate, produced nearly to posterior margin -of 

 thorax, bifid at apex, undulate above, four spines upon cephalo- 

 thorax, and about six upon proper beak, teeth or spines unequal, 

 all nearly equally spaced ; outline of beak below triangulately 

 salient, two-dentate. Inner antennae little longer than the beak. 

 Anterior feet very slender, but little stouter than the next pair. 

 Second pair hardly shorter than third, carpus elongate, seven- 

 jointed, third joint quite long. Tarsi of following pairs nearly 

 unarmed, a few very minute spinules towards base. Outer maxil- 

 lipeds spinulous at apex, last joint pubescent above. 



Plate 36, fig. 6 a, animal, natural size ; b, extremity of outer maxil- 

 lipeds, enlarged six diameters ; c, carpus and hand of second pair, 

 ibid. ; d, part of third pair, ibid. 



Dungeness, in the Straits of De Fuca, Northwest America. 



Length of body, one and a half to two inches. The four dorsal 

 spines are rather larger than those of the beak proper; and the first 



