54 
ZOOLOGY OF THE VOYAGE OE H.M.S. SAMARANG. 
1. LEUCOSIA, Fabricius. 
1. LEUCOSIA HCEMATOSTICTA, Adams 8f White. (Tab. XII. Eig. 2.) 
Thorace trapezoidali supra valde convexo, post angulum latero-anteriorem inscissurft profunda, maculis 
multis sanguineis rotundatis obsito. 
Hab. Maria Orientalia. 
Carapace trapezoidal, very convex, of a light yellow, covered with numerous small 
round blood-red spots, fewer posteriorly, and in the middle line a deep notch behind the 
latero-anterior angle. 
Front obtuse. 
Fore-legs with round, scattered, blood-red spots, and a large quadrate mark of the same 
colour on the outer surface of each claw. 
Hind-legs with a blood-red band on the upper half of each joint. 
Hab. Eastern Seas. 
2. OREOPHORUS, Rupp ell. 
1. OREOPHORUS RETICULATUS, Adam Sf White. (Tab. VI. Eig. 1.) 
Thorace subtrigono, reticulato, fossis subdivisis duabus latero-anterioribus, postice fossa profunda, m 
medio tuberculo clypeoformi, regionibus lateralibus valde elevatis. 
Fronte rotundata antice subemarginata supra exsculpta. 
Chelis reticulatis. 
Hab. Maria Orientalia. 
Carapace subtrigonal, covered with a net-work of beaded lines, the intermediate areas 
finely granulated; along semilunar, irregularly-shaped cavity extending along the latero- 
anterior margin on each side, separated by a strong post-frontal septum, each lateral cavity 
divided in two portions by two over-arching processes, which unite above, leaving a round 
foramen of communication ; the posterior sublongitudinal portion partially divided by a 
conical projecting process ; a small hole in the floor of the hind portion of the latero-anterior 
fossa; a cavity at the hind part of carapace nearly divided in two by a granulated tongue- 
shaped tubercle, and bounded posteriorly by two-obtuse tubercles of the hind margin ; a solid 
shield-shaped reticulated process arising out of the hind part of the cavity ; a beaded line 
around the margins of both fossae ; lateral regions convex, elevated into large obtuse promi- 
nences ; lateral edges coarsely tuberculated. 
Front thick and rounded, slightly emarginate, rather deeply excavated on the upper 
Fore-legs covered with coarse reticulations, formed of granulated lines. Upper claw 
spatulate slightly curved downwards, flattened above, narrow beneath, a row of pits on the 
outer and inner margins, under edge tuberculiferous ; upper surface with several rows of 
beaded lines. Under claw horizontally inclined, slightly curved upwards, elongately conical ; 
