4 Hirst, Collection of Araclniida atul Chilopoda. 



sp. n., in the following details of structure. Segments of 

 tail stouter and shorter ; granules of the keels of the 

 posterior caudal segments much larger and more rounded, 

 especially in the third and fourth segments ; superior 

 keel of third and fourth segments well developed through- 

 out the entire length of the segment ; superior keel of 

 fifth segment well developed anteriorly, but breaking 

 down a little before the middle so as to form a rather 

 irregular group, or double series, of weaker granules, then 

 continuing to the posterior end of the segment as a single 

 series. 



3. Lychas burdoi, E. Sim. 



hometrus burdoi, E. Simon, Bull. Soc. ent. Belgique, 

 V. 26, p. Iviii. (1882). 



Ardiisonictrns burdoi, Kraepelin, Das Tierreich, 

 Scorpiones, etc., p. 48 (1899). 



Loc. Petauke. 



4. Lychas asper, Poc. 



hometrus asper, Pocock, /. Linn. Soc, v. 23, p. 445 

 (1890). 



ArcJiisometrus asper, Kraepelin, Das Jierreich, Scor- 

 piones, etc., p. 49 (1899). 



Loc. N.E. Rhodesia (exact locality not given). 

 E. bank of Loangwa, Portuguese East Africa. An 

 example from Madona, N.E. Rhodesia, has recently been 

 received at the British Museum. 



This species was hitherto only known to occur in the 

 Congo and Angola. 



5. Uroplectes planimanus, Karsch. 

 Lepreus planimanus, Karsch, Mt, Miifich. ent. Ver., 

 V. 3, p. 125 (1879). 



