OBTAIlSrED IlSr EGYPT AND THE SOUDAN. 315 



5th less Tioticeably excavated ; the lateral keels weak, the median 

 lateral visible on the 2nd and on the hinder half of the 3rd ; the 

 4 inferior keels normally strong on 1st segment, much stronger 

 on the 2nd and 3rd, the median invisible on the 4th, which is 

 simply granular below ; the inferior and lateral intercarinal spaces 

 of the segments 1-4 granular ; 5th segment coarsely granular 

 below the lateral keels, posteriorly strongly lobate or bluntly 

 dentate, the edge on each side of the anus produced and lobate, 

 as in eurofceus. Vesicle moderately large, angled beneath the 

 aculeus, which is as loug as the vesicle and lightly curved. 



PflZpi weak ; humerus and femur granular and carinate ; brachium 

 and manus smooth and not carinate, but coarsely punctured ; 

 manus small, narrower than brachium ; digits short, the movable 

 less than twice the length of the hand-back, not lobate ; manus 

 and digits together only a little longer than the carapace. 



Legs granularly crested ; feet with two series of setse below. 



Pectines with 16-17 teeth. 



Measurements in millimetres. — Total length 28, of carapace 3"5, 

 of tail 17, width of 1st segment 2-3, of 5th 1-8. 



Loc. Duroor, 60 miles north of Suakin. 



EXPLANATION OF PLATE IX. 

 Fig. 1. Buthus anthracinus, sp. n., nat. size. 



1 a. „ „ Lateral view of tail. 



2. „ Jat/akari, sTp. n.,na,t. size. $. 



2 a. „ „ Extremity of tail. 



3. „ alticola, sp. n. Extremity of tail. 



4. 4 a. Parabuthtos granimanus, sp. n. Upper and lateral views of tail of 



5 specimen from Zeyla, in which the carapace measures 12-5 mm. 

 (nat. size). To compare with figs. 5 & 5a. 

 4 b. Parahuthus granimanus. Hand and arm (nat. size). 9 . 



4 c, 4 c^. „ „ Arm and hand of c5' specimen in which the 



carapace measures 9'8 mm. ( X 2). to show the basal lobes and 

 granulation (compare with fig. 5c). 

 5, 5 a. Parahuthus liosoma (Hempr. & Ehrenb.). Upper and lateral views 

 of tail of 5 specimen from Aden, in which the carapace measures 

 11-5 mm. In fig. 5 the fourth and fifth segments are a shade too 

 thick ; but the figure shows very clearly the form of the tail 

 which is typical of P. liosoma (s. s.), and differs strongly from 

 that of P. granimanus. 



5 b. Parahuthus liosoma. Hand and arm (nat. size) of same specimen to 



compare with fig. 46. 

 5 c, 5 d. Parahuthus liosoma. Arm and hand of c? specimen of which the 

 carapace measures 10 mm. ( x 2), to show smoothness and absence 

 of lobes on fingers. 

 LINN. JOTIEN. — ZOOLOGY, VOL. XXT. 25 



