PAEATELPHUSA. 935 



Chelipedes subequal ; meropodites with their posterior faces and angles very 

 rugose; carpopodites, above rugose, armed internally with a short blunt tooth, 

 above and below which are some smooth tubercles ; propodite externally convex and 

 rugose ; internally, especially near the lower margin, above, and below tuberculated ; 

 the upper margin of the dactylopodite is rounded, and presents a short row of 

 tubercles at its proximal end ; the pincers are marked on every face with longi- 

 tudinal rows of puncta, and their arms can be almost completely apposed. 



Breadth 29 mm. of a male. 



Length u „ 



Breadth 87 „ of a female. 



Length 22 „ 



Sab. — Ponsee, Kakhyen Hills; Hotha, Yunnan. 



Genus Paratelphusa, M.-Edwards. 

 Paratelphusa day ana, J. W. -Mason. 

 Paratelphma dayana, J. Wood- Mason, Journ. As. See, Bengal, vol. xl, pt. ii, 1871, p. 192, pi. xi. 



The carapace is much broader than long, the greatest breadth being measured 

 between the points of the last epibranchial tooth, extremely convex, smooth, punc- 

 tate, and perhaps finely granidar under an ordinary lens. The branchial lobes are 

 greatly swollen and are not sub-divided into anterior and posterior divisions ; the 

 mesial crescentic portion of the cervical sutm^e is distinctly marked and continued 

 nearly to the level of the last epibranchial tooth, where it ends to appear again 

 opposite the second tooth, whence it passes to the edge of the post-frontal crest, 

 which it but faintly indents. The post-frontal ridge is well marked, and, between 

 the point at which its edge is notched by the passage across it of the cervical suture 

 and the anterior epibranchial tooth, is crenulated ; the cardiac lobe is marked off 

 from the branchial by two shallow almost Hnear depressions on each side of the 

 middle line, and in front from the uro- gastric by a line curving almost concentri- 

 cally with the convexity of the cervical suture. The ejji-gastric lobes are slightly 

 wrinkled or foveate anteriorly, and advanced beyond the line of the post-frontal 

 crest as in Paratelphusa spinigera, and separated from one another by the meso-gas- 

 tric suture, which rapidly bifurcates as it passes backwards, appearing as a short 

 V-shaped impression on the carapace, the space intercepted between the arms of the 

 V being the point of the narrow anterior prolongation of the meso-gastric lobe. 



The antero-lateral margins are inclined and armed, not counting the blunt 

 extra-orbital tooth with its curved external margin, each with four acute, spinlform 

 epibranchial teeth, of which the most anterior is the largest ; the rest are equal in 

 size to, and equidistant from, each other ; from the last a short well-defined keel, 

 obscurely crenated on its inner edge, passes backwards and inwards on to the cara- 

 pace, which is marked with a few small stragghng tubercles along the line of the 

 epibranchial spines. Pront very broad, especially at base, punctate, finely granular 



