1873.] F. Stoliczka — N'otes on the Indian Species of Thelyphonus. 131 



to the margins ; the latter lias also a longitudmal groove which is most de- 

 pressedin the centre ; anteriorly from the central depression proceedtwo lateral 

 grooves to the postocular depressions, and from the centre itself two on 

 either side towards the margin. The sternum is triangular, ohtuse in front. 



The abdomen is moderately depressed, very elongately ovate, across 

 the middle about one-twelfth of an inch broader than the thorax ; granular 

 above, with the posterior segmental edges crenulated ; the muscular points* 

 are round and well marked on the second to eighth segment, the three last 

 segments are mostly smooth, the last joint being roundly compressed 

 towards the upper end, with a small vertical and eliptical gland on either 

 side. Below, the first nine segments are finely scrobiculately punctated at 

 the sides, and smooth along the centre ; the first joint is lai'gest, equalling in 

 length the three last ones, with the central portion of the posterior edge 

 somewhat convexly produced ; the second joint is barely curved at the edge and 

 the third, like the succeeding, quite straight. The muscular impressions are 

 elongate and well marked on the fourth to seventh joints, but a little less 

 distinct and more approximate on the fiirst and second joints. The caudal 

 seta very nearly equals in length the whole of the body, it is always 

 peculiarly attenuated towards the end, and all the joints are more or less 

 hairy. The length of the joints and their number is very variable ; the first 

 is as usually the longest, the succeeding either gradually decrease in length, 

 or som.e of them situated near the middle are longer than the rest. 



The cheliceres may be regarded as of proportionate size to the body. 

 The two first joints have each a strong spine in front, provided with a 

 sharp joint and a small denticle on the inner side. The second joint has 

 the upper side depressed, anteriorly moderately produced, with three small 

 denticles on the inner edge, and two larger ones on the anterior one ; the 

 outermost larger denticle is somewhat more distant from its preceding one, 

 than any of the others from among each other, but all are directed forward 

 and inward ; the inner concave side of this joint is coarsely granular, and 

 the lower anterior corner has two denticles, of which the terminal one is the 

 larger. The third joint on the upper side is equal in length to the 

 second, and laterally along the middle to the fourth ; it always has a 

 small denticle on the inner anterior comer, and a larger one in front of the 

 middle of the lower edge. The anterior process of the fourth joint equals in 

 length the fifth joint, it is depressed, smoothish, with a rapidly contracted 

 sharp point and serrated edges, the posterior serration being slightly coarser 



* These points or depressions are very often called stigmatic points, but they 

 have nothing in common with the stigmata, which lie under the edge of the fii-sst 

 lower abdominal segment, and are not externally visible ; the depressions are merely 

 places of the inner attachment of the muscular bundles which connect the upper 

 chitiuous integument with the lower one. 



17 



