44 
ZOOLOGY 01? THE VOYAGE OF 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. Kg. 4.) 
Thorace latiore quam longiore, granulis multis distinctis setigeris obsito ; regionibus lineis depressis 
distinctis separatis ; margine latero-antcriore dentibus quatuor, magnis denticulatis. 
Fronte emarginata, antice crenulatlt fasciculis duobus pilosis ; margine superiore canthi multidentato. 
Chelis externe tuberculis multis rotmrdatis obsitis, margine superiore setifero. . 
Peclibus posterioribus valde dilatatis, tuberculis liueisque setigeris instructs. 
Abdomine (maris) articulis septem, laevi. 
II ab. Maria Orientalia. 
Pilumnus dilalipes, White, Pro. Zool. Soc. 
Carapace wider than long, covered with coarse granulations, each beset with several 
short set® ; 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 setse ; 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 8$ White. (Tab. IX. Kg. 5.) 
Thorace vix 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 fimbriata. 
Pedibus posterioribus scabriusculis, pilosis. 
Abdomine (feminse) lateribus subparallelis, septem articulis. 
Hab. Maria Orientalia. 
Carapace nearly as long as wide, covered with numerous granulations, each beset with 
several short set® ; the regions of carapace separated by several faintly impressed grooves, 
antero-lateral margins with three wide denticulated teeth fringed with stiff hairs. 
Front subtriangular, slightly produced, finely crenulated on the margin, which is 
furnished with a single fringe of stiff set® ; upper edge of orbit with a single rounded 
dentation. 
