44 ZOOLOGY OF THE VOYAGE OE H.M.S. SAMARANG. 



We have figured a young specimen of this species, which does not seem to be common 

 in collections. 



9. PILUMNUS, Leach. 



1. PILUMNUS DILATIPES, Adams fy White. (Tab. IX. Pig. 4.) 



TJwrace latiore quam longiore, granulis multis distinctis setigeris obsito ; regionibus lineis depressis 

 distinctis separatis ; margine latero-anteriore dentibus quatuor, magnis denticulatis. 



Fronte emarginata, antice crenulata fasciculis duobus pilosis ; margine superiore cantlii multidentato. 

 Chelis externe tuberculis multis rotundatis obsitis, margine superiore setifero. ' 

 Pedibus posterioribus valde dilatatis, tuberculis lineisque setigeris instructis. 

 Abdomine (mai'is) articulis septem, lsevi. 

 Hab. Maria Orientalia. 

 Pilumnus dilatipes, White, Pro. Zool. Soc. 



Carapace wider than long, covered with coarse granulations, each beset with several 

 short setae ; the different regions divided by distinct shallow grooves ; latero-anterior margin 

 with four prominent denticulated teeth, the first small, the second wide, and the two 

 posterior equal and triangular. 



Front emarginate, with numerous serrations and with two tufts of straight setae ; upper 

 margin of orbit with numerous dentations. 



Fore-legs covered with granules and short stiff hairs on the outer and upper surface, 

 smooth internally. 



Hind-legs considerably dilated, beset with fine granulations and numerous rows of 

 short bristles, the edges fringed with long hairs. 

 Abdomen (of male) seven-jointed and smooth. 

 Hab. Eastern Seas. 



2. PILUMNUS SCABRIUSCULUS, Adams 8f White. (Tab. IX. Pig. 5.) 



Thorace vis longiore quam latiore, granulis multis parvis setigeris obsito, regionibus lineis depressis 

 vix distinctis separatis ; marginibus latero-anterioribus dentibus tribus denticulatis. 

 Fronte prominente triangulari crenulata, margine superiore canthi unidentato. 

 Chelis tuberculis granulosis distinctis obsitis, parte superiore setis brevibus rigidis fimbriate. 

 Pedibus posterioribus scabriusculis, pilosis. 

 Abdomine (feminas) lateribus subparallelis, septem articulis. 

 Hab. Maria Orientalia. 



Carapace nearly as long as wide, covered with numerous granulations, each beset with 

 several short setae ; the regions of carapace separated by several faintly impressed grooves, 

 antero-lateral margins with three wide denticulated teeth fringed with stiff hairs. 



Fronl subtriangular, slightly produced, finely crenulated on the margin, which is 

 furnished with a single fringe of stiff setae ; upper edge of orbit with a single rounded 

 dentation. 



