324 Mr. Butler's Descriptions of Scorpions. 



testaceous ; vesiculus above with a dull central castaneous 

 spot ; tarsi below ochreous. 



Structure very similar to the preceding species ; it differs 

 as follows : pincers of mandibles longer, more hooked ; 

 depressions of abdomen above less prominent; segments of 

 abdomen below rugulose ; lamellae of pectines 19 on one 

 side, 17 on the other * ; length 45 mm. 



Soriano, Uruguay {Thos. Havers) Type. B.M. 



* I have no faith in the number of lamellae as a distinguishing character ; 

 it varies almost indefinitely. 



