Thelyphonidae in the British Museum. 131 



vertical ; the tliovacic fovea ratlier deep, the median groove 

 conspicuous and smooth anteriorly. 



Terga granular like the carapace, with a conspicuous series 

 of granules along the posterior border j the ternuaal segment 

 smooth, punctured. 



Sterna. — First or genital operculum large, not twice as 

 wide as long, smooth, polished, strongly impressed just above 

 the stigma and laterally in front of the pulmonary sac, with 

 two very faint impressions on each side of the middle line; a 

 shallow median groove in its posterior half, and behind this 

 a shallow transverse impression ; second sternal plate finely 

 granular and slightly elevated just behind the genital aper- 

 ture, with an oblique ridge on each side of it and a low median 

 crest behind it ; the third siernite very narrow and trans- 

 versely grooved ; the rest of the sterna nearly entirely 

 smooth. 



The metasternuin and coxre of the cephalothorax smooth, 

 sparsely punctured ; the prosternum granular but not keeled. 

 Chelce. — CoxcB (maxillae) smooth below, coarsely but 

 sparsely punctured, rugose behind, the processes projecting" 

 straight forwards parallel with each other, their external sur- 

 face forming an obtuse angle with the anterior edge of the 

 coxa. Trochanter rugose, but scarcely granular above, with 

 3 blunt tuberculiform teeth on the inner edge and a small 

 tooth at the base of the larger angular tooth on its outer side, 

 its lower edge armed with one strong tooth-like spine. Femur 

 coarsely punctured, rugose above, armed in front with only 

 one small inferior tubercle. T<'i/a coarsely punctured, with a 

 conspicuous, blunt, cylindrical tooth at the base of the 

 apophysis, which is slender, bluntly serrate in front, and 

 smooth behind. Tarsus (manus) coarsely punctured, finely 

 serrate internally, the serration passing on to the immovable 

 digit, bearing the usual anterior inferior spine ; the movable 

 digit normally grooved, its internal edge conspicuously 

 emarginate. 



Legs finely granular ; tarsus of first with the third segment 

 the longest, the second and ninth about equal in length, fourth 

 to the eighth becoming gradually shorter, all the segments 

 cylindrical ; tarsi of the rest armed below with two series of 

 robust spines. 



Measurements in millimetres. — Total length 39, length of 

 carapace 16, width across angles of lateral margin 8"5. Chela: 

 length of upperside of femur 4 5, of tibia 6"8, of tibial 

 apophysis 3*5, of tarsus 6, of tarsal apophysis 2*5, of digit 4'7. 

 First leg, femur 10'5, tarsus 10; fourth leg, femur 10*3, 



9* 



