238 CRUSTACEA. 



PlLUMNUS L^EVIS. 



P. levimano qffinis, latior. Carapax omnino Icevis, nitidus, nan areo- 

 latus, convexiusculus ; frante emarginato; margine antero-laterali 3-den- 

 tato, dentibus minutis spiniformibus, posteriore minimo, angulo orbitce 

 postico non praminente. Pedes antici valde incequi, carpo Icevi, non 

 obsolete tuberculato, manu majore omnino Icevi, minore sparsim hir- 

 sutd, non tuberculatd. Pedes 8 postici tenues, paulo hirsuti. 



Near P. levimanus, but broader. Carapax smooth and shining, not 

 areolate, rather convex; front eniarginate; antero-lateral margin 

 three-toothed, the teeth minute and like spines, the posterior much 

 the smallest, outer angle of orbit not raised into a tooth. Anterior 

 feet very unequal, carpus smooth, not even faint tuberculate ; larger 

 hand wholly smooth, smaller sparsely hirsute, not at all tubercu- 

 late. Posterior eight feet slender, somewhat hirsute. 



Form very near the P. levimanus, but shorter for the breadth. 

 Mangsi Islands, Straits of Balabac. 



Length of carapax of a female, 2-1 lines ; greatest breadth, 2 - 95 

 lines; ratio of length to breadth, 1 : 1'4. The absence of a faint 

 tuberculation, from the carpus of the larger of the anterior feet, and 

 also from the smaller hand, is characteristic of this species. The eight 

 posterior feet are quite slender, and very distinctly hirsute on some of 

 the joints, the hairs being considerably longer than the diameter of 

 the joints. The antero-lateral margin is quite short, and the postero- 

 lateral is nearly longitudinal. 



PlLUMNUS CALCULOSUS. 



Carapax convexiusculus, antici non areolatus, paulo incequabilis etpubes- 

 cens; fronte emarginato; margine antero-laterali perbrevi, k-dentato, 

 dente postico minimo, ceteris crassiusculis _, margine orbitali infer lore 

 tridentato. Pedes antici subcequi, carpo tuberculis paucis grandibua 



