128 MR. R. J. pococK ON THE scoRiuoNS [Mar. 18, 



vesicle either with or without a tubercle 



beneath the aculeus Subgenus Ghosp.ius Simon 



Type G. madagascancnsis (Uervj. 



e\ The basal pectinal tooth in the female like 

 the rest ; tail powerful and as a rule 

 stronely keeled; withoutaspine ortubercle 



beneath the acileus Subge°"%^«^""™^^A,^ s 



Type 2-". lio&uiiia (iihrb.;. 



d}. Tergites with a single median and two lateral 

 keels ; cephalothorax, as a rule, distinctly 

 keeled. 

 /■'. Filth caudal segment with rounded supero- 



'' lateral edges Subgenus Bim.us (s s . 



Type B. eurojxeus (Lum.j. 



n\ Fifth caudal segment with compressed ,vu,.u^ 



carmatesupero.lat.ral edges ^^^f:]^^/^. 



Eypothetical Pedigree of the Buthidse. 



Prionurus, 



Centrurus 



Jsomalrus, 



Vrcplectea. 



Jsomttroides. 



I 



