450 J. Woocl-Mason — On Indian and Malayan Telphtistda. [No. 4, 



middle third of the mesogastric region, on each side of which the 

 surface is raised into an oval areolet bounded in front by the pro- 

 togastric, behind and laterally by the branchial lobe which in part 

 bounds it in front ; uro-gastric lobes distinct from the rest of the 

 regions and from one another, post-frontal ridge sinuous, coarsely 

 wrinkled, ending about 2 mm. short of the epibranchial teeth, 

 slightly interrupted by the forward position of the epigastric lobes ; 

 these are rugose in front, deeply divided mesially and completely 

 isolated from the conterminous regions of the carapace by well- 

 defined grooves ; meso-gastric area distinct, sending forwards a nar- 

 row tongue between the proto- and epi-gastric lobes ; branchial 

 areas divided into anterior and posterior portions by broad, smooth, 

 deep, oblique depressions ; the latter being scarcely distinct from the 

 cardiac division ; the epibranchial teeth are continued backwards, 

 outwards and inwards as raised denticulated crests, along the inner 

 side of which runs a smooth furrow continuous with the post-orbi- 

 tal furrow ; posterolateral margins rugose behind the termination 

 of the lateral crests, the rugosities being continued downwards and 

 forwards on to the inflected portion of the carapace ; orbits and 

 extra-orbital teeth finely crenulated. Front broad, short, very little 

 deflexed, terminated by a smooth margin. The chelipedes are sub- 

 equal ; the two inferior edges of their meropodites are armed with 

 tubercles, their inferior planes bear at their distal extremity 

 and nearer the inner than the outer of the two edges a single 

 spinule, which is also to be remarked in many other species ; the 

 third or upper angle is rugose; the succeeding joint is greatly 

 thickened at its distal end and is superiorly coarsely wrinkled and 

 concave ; its inner margin is armed with a stout sharp spine, be- 

 neath which is a smaller one ; the proximal half of the penul- 

 timate joint is convex and coarsely granulated externally, internally 

 convex and smooth, except towards the inferior border where two 

 or three rows of small, widely-separated tubercles are to be seen j 

 its upper surface is ornamented by three rows of large tubercles ; 

 its distal prolongation is deeply canaliculate and its inner toothed 

 edge is in contact throughout its length with the dactylopodite 

 which is likewise canaliculate externally and compressed, so that its 

 upper border presents a saw-like edge, being ornamented with 



