— 6 — 



— i d., «A revision of the genera of Scorpions of the family 

 Butiiidae, with description of some south-african species»; 

 Proc. Zool. Soc. London, pp. 111—144, pi. XIII— XIV. 



— Simon, E. «Etudes arachnologiques. Mem. 22^. XXXV- 

 Etude sur les Arachnides reciieillis par M. L. von Hohnel, offi- 

 cier de la marine autrichienne, pendant I'expedition de M. le 

 comte S. Teleki dans TAfrique orientate equatoriale en 1887 — 

 1888»; Ann. soc. entomol. France, p. 130. 



1895. Pocock, R. «Supplementary note upon the Scorpions 

 obtained in Egypt and the Soudan by John Anderson»; Journ. 

 Linn. Soc. London, v. XXIII, pp. 299-316, pi. IX. 



1896. id. «0n the Scorpions, Centipedes and Milhpedes 

 obtained by Dr. Gregory on his Expedition to Mount Kenia, 

 East Africa»; Ann. and Mag. nat. Hist., ser. 6,. v. XVII, pp. 

 425—444, pi. XVIII. 



— Kraepelin, K. «Neue oder weniger bekannte Scorpione»: 

 Mitt, naturh. Mus. Hamburg, v. XHI, pp. 121—146, 1 Taf. 



1898. Pocock. R. «0n the Scorpions, Spiders and Solpu- 

 gas collected by Mr. C. Stuart Betton in British East Africa*; 

 Proc. Zool. Soc. London, pp. 497 — 524, pi. XLI — XLII. 



1912. L on n berg, E. « Scorpions, Solpugids and Ixodides 

 collected by the Swedish Zoological Expedition to British 

 East-Africa 1911 >; Arkiv for Zoologie, v. VII, K^ 24, pp. 1—5. 



1913. Kraepelin, K. «Neue Beitrage zur Systematik der 

 Gliederspinnen. I1I»; Mitt, naturh. Mus. Hamburg, v. XXX, 

 pp. 167 — 188. 



1914. Birula, A. «Miscellanea scorpiologica. X. Bemer- 

 kungen tiber die Scorpionenfauna Britisch Ost-Afrikas>; Ann. 

 Mus. Zool. Petrograd, v. XIX, pp. 114—124. 



1915. i d., «Arachnologische Beitrage. V. «Weitere Bemer- 

 kungen tiber die Scorpionenfauna Britisch Ost-Afrikasw; Revue 

 russe d'Entomologie, v. XV, pp. 50-65. 



An account of the external morphology of Scorpions. 



The scorpions may be characterized in detail as follows: 

 the body is divided into three main regions — an anterior, or 

 cephalothorax, a middle, or trunk (praeabdomen), and a poste- 

 rior, or «tail» (postabdomen). The cephalothorax is covered 

 by a dorsal shield, or carapace, which is unsegmented and 

 furnished near its centre with a pair of large median eyes 



