

ARCTURIDEA. 



795 



fourth thoracic segment has a low prominence just inside of the epi- 

 meral suture. The hands of the first pair of legs resemble those of 

 the Gaudichaudii. 



Subtribe ARCTURIDEA. 

 Family ARCTURID^E. 



Genus LEACHIA, Johnston. 



Leachia NODOSA. 



Corpus tuberculosum. Thoracis segmenta secundum tertiumque brevis- 

 sima; quartum maximum, valde elongatum, antich latius et utrinque 

 cuspidatum. Abdomen 2-articulatum ; segmento primo transverso; 

 8ecundo oblongo, postici parce latiore, rotundato, ad latera prope basin 

 emarginato. Antennas, superiores tenues, articulis duobus inferiorum 

 parce longiores ; inferiores pediformes fere corporis longitudine, Q-arti- 

 culatae, artiado quinto breviore quam quartos, infra brevissimh paulum 

 8etuloso, sexto quadruplo breviore, unguiformi, fere recto, infra parce 

 setuloso. 



Body tuberculate. Second and third segments of thorax very short ; 

 fourth large and much elongate, widest anteriorly with a pointed 

 prominence either side. Abdomen two-jointed; first segment trans- 

 verse ; second oblong, not narrower posteriorly, rotund behind, on 

 either side near base emarginate. Superior antennae slender, hardly 

 longer than the first two joints of the inferior ; inferior pair pedi- 

 form, nearly as long as body, six-jointed, fifth joint shorter than 

 fourth, and very short and setulose below ; sixth hardly one-fourth 

 the fifth, unguiform, nearly straight, sparingly setulose below. 



Plate 53, fig. 2 a, lateral view of animal, enlarged; b, dorsal view; 

 c, one of the anterior legs. 







