384 ME. J. R. HENDERSON— A CONTRIBUTION 



Mason's description and figures. The adult males, however, have a very wide gape between 

 the fingers of the larger chelipede, as in T. difformis, Milne-Ed w. ; and as the latter 

 species appears to be closely allied to T. Icevis in other respects, perhaps the two are not 

 distinct. The wide gape of the fingers is not specially referred to by W ood-Mason, and 

 it, is probably confined to old males ; it is not seen in either of the specimens which I 

 refer to T. enodis. 



Distribution. Ceylon (Kingsley). 



133. Telphtjsa Pocockiana, n. sp. (PI. XXXVII. figs. 5-8.) 



Jubbulpore, three males and three females {Bay). 



The carapace is smooth and slightly convex anteriorly, with the branchial regions 

 somewhat expanded laterally. Commencing at the mesogastric furrow, which is fairly 

 well marked, and bifurcated posteriorly, the postfrontal ridge curves outwards and slightly 

 backwards, but stops abruptly a short distance from the side of the carapace : in other 

 words, it does not pass into the epibranchial tooth ; throughout its course it is sharply 

 defined and nowhere interrupted, though near the middle line it is slightly wrinkled. 

 It approaches rather nearer than usual to the orbital margin, and the surface of the 

 carapace between the external orbital angle and the outer end of the ridge is considerably 

 excavated. A shallow groove, not always seen in young individuals, passes from this exca- 

 vation between the end of the ridge and the free margin of the carapace. The cervical 

 groove is well marked at the posterior limit of the gastric area, but shallow and faint else- 

 where, and scarcely reaches the postfrontal ridge, which it does not indent; it is better 

 marked in young individuals. The epibranchial tooth is very rudimentary, in fact 

 indicated merely by the posterior limit of a slight notch, and placed a little in advance 

 of the level of the postfrontal ridge, i. e. quite close to the external orbital angle, which 

 is itself but little prominent. The antero-lateral margin, behind the epibranchial tooth 

 and bounding the anterior branchial area, is regularly curved and obsoletely dentate ; 

 behind the posterior limit of this margin are the usual slight transverse ridges extending 

 to the concave posterolateral margin. A few very slight rugosities or lines are seen on 

 the anterior branchial region, behind the outer limit of the postfrontal ridge. On the 

 gastric region adjoining the cervical groove an anterior and posterior punctum are seen on 

 each side. The frontal margin is almost straight and is scarcely crenulated. The orbits are 

 remarkably large and subtriangulate in outline, the apex of the triangle being placed at 

 the external orbital angle. The epistome is comparatively deep, and the lower margin gives 

 rise to a broad obtuse tooth. The ischial line of the external maxillipedes is faint, and 

 scarcely extends throughout the length of the joint ; it is placed nearer the inner margin. 

 The chelipedes are unequal in size, and very similar to those of T. indica ; the carpal 

 spine is short but acute, the outer surface of the hand sparingly punctate, and the puncta 

 are arranged in lines on the outer surface of the fingers. The am bulatory legs are also 

 similar to those of T. indica. The meropodites have the anterior margin finely crenulated, 

 and a few short horny spinules are met with, on the posterior margin of the propodi. 

 The terminal segments of the male abdomen are wider than those of T. indica, and the 

 lateral margins of the penultimate segment are almost straight. 



