800 CRUSTACEA. 



Genus LEPTOCHELIA. 



Tanai similis. Pedes antici longi, digitis tenuibus Mantibus. Antennce 

 lmce elongates, et flagello confectce. Abdomen §-articulatum, stylis 

 caudalibus articulatis. 



Near Tanais. Anterior feet long, fingers slender and gaping. Superior 

 antennae elongate and ending in a flagellum. Abdomen six-jointed; 

 caudal stylets jointed. 



The head, thorax, and abdomen, and general characters are like 

 those of Tanais. The anterior feet, in the species examined, are 

 much longer than the body, and the hand alone more than two-thirds 

 as long. The exterior antennae are but little shorter than the body. 

 The caudal stylets have a short branch from the base. The feet are 

 otherwise nearly as in Tanais ; the second pair is rather longer than 

 the two following, and has a longer claw. Tanais Edwardsii of Kroyer 

 (Tids. iv. 1842), is of this genus. 



LeptocMia, Dana, Amer. J. Sci. [2], viii. 425, 1849. 



LEPTOCHELIA MINUTA. 



Corpus lineare, capite angusto, fronte fere truncato, thoracis segmentis 

 duobus posticis fere quadratis, aliis brevioribus. Abdomen postice sub- 

 obtusum, segmentis subcequis. Styli caudales abdominis longitudine, 

 ramo longo Q-articulato, altero minuto 2-S-articulato. Antennce supe- 

 rwres corpare paulo longiores, bad longissimo, 4:-articulato, articulo 

 secundo longiore; flagello §-7-articulato vix longiore quam articulus 

 basis secundus. Pedes antici corpore valde longiores, carpo dimidium 

 corporis longitudine valde superante, manu paulo longiore, digitis 

 tenuissimis incurvatis, nudis, digito immobili prope apicem infra den- 

 tigero. 



Body linear; head small, front nearly truncate; two posterior segments 

 of thorax transverse but nearly quadrate, the others shorter. Abdo- 

 men subobtuse behind ; segments subequal. Caudal stylets as long 

 as abdomen, longer branch six-jointed, shorter minute, two or three- 



