310 



DE. W. T CALMAN ON EIVEE-CEABS 



record them provisionally under that name. In the greater rugosity of the antero- 

 lateral regions of the carapace they resemble P. bemiforti Roux, of which I have 

 examined two female co-types ; they differ from that species in having the carapace 

 deeper and much more convex, the front narrower, and the frontal ridge less marked, 

 and the fingers of the chelae longer and more slender, as well as in the much longer 

 walking-legs. 



PaEATHELPHUSA (LiOTELPHUSA 1) WOLLASTONI, sp. n. (Text-fig. 12.) 



Utakwa River. 1 male, 1 female. 



BescHption. Carapace strongly convex antero-posteriorly, less so from side to side, 



Text-fisure 12. 



Parathelphiisa {LiotelplMsa) ivoUastoni . Holotj'pe, (^, x H. 

 Above, the larger chela and the abdomen, on same scale. 



its depth more than half its width. Surface smooth and polished, with oblique lines 

 near the lateral margins. Cervical groove faintly marked, its lateral limbs inclined at 

 a more acute angle to each other than in the type of P. aruana. Branchial regions 

 hardly inflated. Epigastric lobes rounded, a little more prominent than in P. aruana, 

 less rugose, not oblique, separated by a deep and sharply defined mesogastric groove. 

 Front narrower than in P. aniana, the horizontal ridge well marked, extending the 

 whole width of the front, concave in the middle as seen from above. Orbits slightly 



