1900.] INSECTS AXD A EACH M DS FROM SOMALILAND. 57 



tbe middle of the ocular tubercle. Terga closely and finely 

 granular throughout. Inferior keels of 2nd and 3rd caudal 

 segments strongly dentate. Band smooth, with a pair of weak 

 and weakly granulate crests on its upperside. 



Total length 50 mm. 



Luc. Zeyla in North-west Somaliland (E. W. Oates). In British 

 Museum. 



Bl'THXS CALYICErS PoC 



Of. Biipra, p. 54. 



BUTEDB ACTTECAR1NATUS Simon. 



BittJms aeuteoarinatus, Simon, Ann. Mus. Genova, xviii. p. 245, 

 pi. viii.fig. 18(1883). 



Luc. Zeyla (E. W. Oates). In British M use inn. 

 Occurs also in Egypt and Arabia. 



BUTHUH POLYSTICTUS Poc. 



Buthus polystidus Pocock, Ann. Mag. Xat. Hist. (6) xviii. p. 178, 

 pi. .\i fig. 1 (1896). 



Goolis Mountains in Somaliland (E. Lorl PJiHHps). In British 

 M useum. 



Buxhub emixi Pocock. 



Butlms eminii, Pocock, Ann. Mag. Nat. Hist. (6) vi. p. 98 

 pi. i. tig. 2 (1890) ; id. op. cit. (6) xviii. p. 179 (1896). 



Loc. Aimoea in the Boran Country, 3000 ft. (A. Donaldson 

 Smith). In British Museum. 



This species and perhaps also B. potystietus may prove to be 

 Bubspecies of B. trilineatus Peters, described from Tete. 



The Bpeciefi and subspecies of Bv.th.us mentioned above may be 



diagnosed as follows : — 



<i. Inferior lateral keeli <>i' - _ » 1 1 ■ sandal segment posteriorly 



lobats ; inferior median keels of 2nd and 3rd a 1 1 1 ■ tbe 



granules enlarged toward* the posterior end. 



Carapace without distinct median, lateral, and 



pi Merior keels, inferior keeli on 4th oandal segment 



obsolete ealvi ■ 



b\ Oarapace with distinct median posterior and lateral 

 keels, the posteriors turning outwards and uniting 

 with the laterals, inferior keels on li l> caudal segment 



developed oeeitantu, 



i chelae, and bod] uniformly yellow, not 



iii . . 1 wiili black ; intercarina] ocular area oloselj 



granular 



i ai >\ bodj with black-lined keels, femora 



of less dietallv infuscate . patellae all fu 



. I \ iiikI bIod i 1 1 1 .- 1 1 area of oarap tee 



granule] in the middle tubsp. •■■ . 



