134 F. Stoliczka — Notes on the Indian Species of Thelyphonus. [No. 2; 



longer tJian the ceplialothorax and abdomen together; second joint of 

 cheliceres loith Jive subequal spines, four being on the inner, one someivhat 

 more distant on the upper anterior edge ; third joint ivith a single strong 

 spine on the lower median edge, it is longer and slenderer than the fourth joint ^ 

 whose anterim* process is long, subcylindrical, smooth posteriorly, denticulate 

 on the atitero-interiar edge ; a sharp denticulate ridge connects the central 

 with each group of lateral eyes ; first lower abdominal segment depressed, 

 particularly in the middle, with the posterior edge convexly produced. 



Hab. — Assam and Sikkim. The species is much rarer than the previous. 



It will be seen from this abbreviated characteristic that the species is 

 very closely allied to the previous, but after having examined several speci- 

 mens of each, exactly agreeing with each other, I think they must be looked 

 upon as two distinct species. I have already given a detailed description of 

 the present one. 



In size and coloration it almost exactly agrees with T. scabrinus, but 

 is slightly more depressed, the cheliceres are somewhat more slender and 

 longer. The spines on the second joint are subequal, four on the inner 

 edge, and one distant one on the upper edge ; the form of the third joint 

 and the process on the fourth difPer essentially, as may be readily seen by 

 a comparison of the enlarged figures of the respective cheliceres. The feet are 

 also proportionately longer than in T. scabrinio^ ; the eight tarsal joints on 

 the first pair equal in length their preceding metatarsus. Internally along 

 each group of lateral eyes are two imperfect ridges of granules somewhat 

 parallel to the central cephalic groove. 



As regards general form and proportional size of the joints of the 

 cheliceres T. Assamensis is also closely allied to T. caudatus, as emended by 

 Lucas, but the denticles on the second joint are very different, 



Butler (loc. cit. p. 202) considers T. Assamensis as the adult of T. 

 rufimanus of Lucas. If such identifications were admitted, we might better 

 give up the idea of distinguishing at all species of Thelyphoni ; a superficial 

 comparison of the respective figures will shew that the cheliceres and limbs 

 of T. Assamensis are proportionally very much longer, than could possibly 

 be attributed to a change in age. Lucas particularly refers to the shortness 

 of the cheliceres* in his description of T. rufimanus, their third joint is 

 said to have no spines whatever ; the first lower abdominal segment is stated 

 to be very large. Besides that it appears to me, judging from the figure, that 

 there is in Lucas' species no sharp ridge between the central eyes. 



3. THELTPHo:ffUS {conf) angusttjs, Lucas. PI. XII. Fig. 3. 

 ? T. angustus, Lucas, Guerin's Mag. de Zoo\. for 1835, pi. 10, fig. 3. 

 Cephalothorax and abdomen long and slender, finely granular ahove ; che- 

 liceres in young almost entirely smooth, in old specimens with the exception of 

 * They are much shorter than the abdomen. 



J 



