284: Mr. R. I. Pocock on some 



yellow, with a fulvous tinge. The areolet narrowed at the 

 top ; the cubital nervures almost united ; the recurrent 

 nervure is received in the middle ; the transverse median 

 nervure is received before the transverse basal. Petiole 

 stout, shining, its base and the sides of the dilated part with 

 scattered punctures ; the dilated part with a..i elongated 

 fovea at the base ; the space behind the fovea and the space 

 surrounding the spiracles finely striated ; the second, third, 

 and fourth segments closely punctured, the second strongly 

 longitudinally striated between the gastrocoeli, which are 

 large, deep, smooth, and with an oblique slope at the base and 

 apex. The yellow line on the petiole is narrowed in the 

 centre, on the second only very slightly, on the third and 

 fourth acutely narrowed ; on the apical two not perceptibly 

 narrowed; the second and third segments broadly in the 

 middle^ the fourth and fifth broadly at the apex, and the apical 

 segments are entirely yellow. 



[To be continued.] 



XXXVII. — Descriptions of some new African Arachnida. 

 By R. I. Pocock. 



Order SCORPIONES. 



Parahuthus cristatus, sp. n. 



Parahuthus brevimamis, Pocock, P. Z. S. 1890, p. 125 (nee Butkus 

 brevimanus, Thorell). 



? . — Allied to P. h-evimanus, Thorell, in the complete 

 absence of distinct crests on the sides and under surface of 

 the fourth caudal segment. Caudal segments 1-3 with eight 

 keels, the median lateral weak on segments 2-3 and only 

 granular posteriorly ; four inferior keels on segment 1 entirely 

 smooth, on 2 and 3 marked with very coarse tubercular 

 granules, which increase in strength posteriorly, the lateral 

 keels converging posteriorly ; on the 3rd segment the ter- 

 minal tubercles of the four keels form a broad, quadrilobate, 

 U-shaped crest ; the anterior edge of the lower side of the 

 4th segment also raised into a distinct lobate crest. Upper- 

 side of segments 1-2 abruptly elevated anteriorly, the anterior 

 third rising nearly vertically, the posterior two thirds hori- 

 zontal, excavated and shagreened. 



Chelce as in P. hrevimanus apparently, except that there are 



