48. 



XIV. On the Characters of the Genera of the 

 Family Scorpionidea, with Descriptions of the 

 British Species q/Chelifer and Obisium. 



SCORPIONIDEA. 



Pedum par secundum articulo ultimo incrassato. 



Synopsis Stirpium et Generum. 



Stirpsl. Cauda nulla. Genera. 



Corpus depressum. Oculi 2. PedesSpos- 



tici 5-articulati. - - - - 1. CHELIFEE, 



Corpus sub-cylindraceum. Ocelli 4. Pedes 



8 postici 5-articulati. - - - 2. OBISIUM. 



Stirps 2. Cauda articulis 6 : ultimo acule- 



ato ; aculeo arcuato venifero. (Corpus 



depresso-cylindraceum. Pedes 8 postici 



6-drticulati.) 



Ocelli 6. 3. * SCORPIO. 



Ocelli 8. 4. BUTHUS. 



Stirps 1. 

 The ocelli of the animals of this division are placed on 

 the sides of the anterior segment of the body or thorax. 

 They want the tail and the pectinated processes near the 

 base of the abdomen, by which they may very easily be 

 distinguished from those of the second stirps, with which 

 they were formerly arranged by Fabricius, under the title 

 Scorpio. Two species only were known to Linn6, who re- 



* Scorpio Europaeus auctorum. 



