Ethiopian Species of \&c\\wm\r\2d. 315 



weak ; (lower surface of tail strongly crested, 

 vesicle smooth). 

 c\ Anterior upper crest of humerus absent; keels 

 on last abdominal sternite and those on lower 

 surface of first caudal segment finely granular. Jotiesii (Poc). 

 i\ Crest on humerus distinct ; keels on lower sur- 

 face of first caudal segment and on last abdo- 

 minal sternite smooth crassimanus, sp. n. 



b. Hand flatter, narrower, width less than length of 



hand-back ; more of the carapace showing below 



the lateral eyes ; crest on humerus very strong. 



a^. Lower side of tail much less strongly crested ; 



its upper surface with shallower median groove. 



a^. Carapace deeply excised in front ; abdomen 



and tail not thickly punctured ; vesicle 



smooth ; pectiual teeth 9-13 Lecontei (Luc). 



h^. Carapace less deeply excised ; abdomen and 

 tail thickly punctured ; vesicle granidar 



below ; pectinal teeth 5-7 africanus, Sim. 



i^. Lower side of tail strongly keeled ; groove on . 



its upper surface deeper. 

 «*. Hand coarsely granidar above ; a bristle on 



the inferior distal angle of the tarsi rugulosus, sp. n. 



i^. Hand not granular above ; a spine on the 

 inferior distal angle of the tarsi. 

 a^. Femora externally finely punctured, not 

 granular ; hand less coarsely sculptured ; 



pectinal teeth 8-10 asj)er (Pet.). 



V. Femora externally granular ; upperside of 

 hand with a coarsely reticulated pattern ; 

 pectinal teeth 5-7 validus, Thor. 



OpistJiacanthus punctulatuSj sp. n. 



Colour a uniform dull brown ; legs the same tint as the 

 trunk, and not brownish red as in most species of the genus. 



Carapace densely punctured, anteriorly finely granular ; 

 the median lateral eye a little nearer the posterior than the 

 anterior of the series. 



Terga finely and closely punctured ; sterna smooth, 

 polished, finely punctured. 



Tail as in 0. madagascariensis, Kraepelin. 



Chel(B long and slender, densely punctured ; humerus and 

 brachium very finely granular above, humerus with just a 

 few minute granules below at the base ; humerus furnished 

 with a very large internal basal process ; hand not granular 

 above, except towards the inner edge ; inner surface armed 

 with two crests of strong granules ; flat and depressed, the 

 two areas of the upper surface meeting at right angles ; width 

 of the hand about two thirds the length of the hand-back 

 which exceeds that of the movable digit. 



Legs with femora finely granular externally ; tarsal spine- 



