Classification of Scorpions. 309 



Subfamily Ivhini. 



Sternum longer than wide or wider than long, its posterior 

 half with a deep median longitudinal groove. 



Feet not laterally spined beneath, but furnished with a 

 median series of spinules or tufts of hair. 



Three lateral eyes on each side. 



The movable digit of the cheliceriB is very generally fur- 

 nished with a tooth or teeth on its inferior edge, but the 

 corresponding border of the immovable is unarmed. 



Genera : Scorjn'ops, Peters ; lurus, Thorell ; Uroctonus^ 

 Thorell; Anuroctonus*, gen. nov. ; Vejovis^ C. Koch; 

 Hadrurusj Thorell ; CaraboctonuSj Pocock ; Hadru- 

 roides f, gen. nov. 



Distribution. Mediterranean, N. India and Burma ; S. Ne- 

 arctic to Chili. 



Considering the wide geographical range of this group and 

 the difference of aspect presented by such of its members as 

 Scorpiops and Hadrurus^ one would be inclined to think the 

 assemblage an unnatural one. But the intermediate forms 

 that exist seem to show that this is not the case. For 

 instance, from Scorpiops to lurus is not a great leap ; and 

 similarly we can proceed from lurus through Uroctonus and 

 Anuroctonus to Vejovis, or through Hadruroides and Garabo- 

 ctonus to lladrurus. lladrxirus undoubtedly differs very much 

 from lurusj but no one will probably dispute that it is nearly 

 allied to Caraboctonus ', and the similarity that obtains be- 

 tween Caraboctonus and lurus with respect to armature of 

 the mandible, the hairy clothing of the soles of the feet, &c., 

 may surely, when taken in conjunction with the other features 

 already pointed out as characteristic of the lurini, point to 

 real kinship between the two. 



Subfamily Crmrilini. 



Sternum long, as long or longer than wide, with a poste- 

 rior rounded impression, the lateral portions of its posterior 

 half not thrust up on each side of the middle line. 



Pectines very short, with all the intermediate lamellai except 

 a proximal piece obsolete, and the teeth very large. 



Stigmata circular. 



Two lateral eyes on each side. 



* For Chitrurufy pha>o(ladyltts, Wood, cf. infra 

 t For Hadrurus charcasus, Karscli, <•/. infra. 



