Chamberlin.— PSEUDOscoRPioNs from chile and Sumatra ISfi 



ON TWO SPECIES Oí PSEUDO5C0RFÍON FROM 

 CHILE WITH H NOTE IN ONE FROM SUMSTRí 



BY 



Ooseph Conrad CHAnBERLIN 



Stanford Universify, California, U. S. A, 



Through the kindness of Dr. Carlos E. Porter, of San- 

 tiago, I ha ve received a specimen of this interesting group 

 of Arachnids, whicli is here reported upon. This opportuñi- 

 ty is also taken for describing a new species of this group, 

 also frorn Chile, Ayhich I received from Dr. C. E. Crosby 

 of Cornell University. There is also given some notes upon 

 the comparative valué of characters of systematic impor- 

 tance in the genus Chelanops, and some notes concerning 

 the taxonomy of the genus Chthonius. 



CHTHOJSIIIDAE 



The folio wing key to the South American species of 

 Chthonius will pro ve helpful in determining especies from 

 this continent. All species so far described from South 

 America are included. 



1. — Teeth of fingers of claw close-set, contiguos, gi- 

 ving the finger a serrate or crenulate appearance 2 



Teeth of fingers of claw distinctly separated from 

 each othev, not contiguos 5 



2. — Fingers of claw twice or very nearly twice as 



long as hand 3 



Fingers of claw 1.5 times as long as hand 



parvidentatus Balz (Venezuela) 



3. — With one pair of eyes naranjitensis Ellingsen 

 (Ecuador). 



With two pairs of eyes 4 



4. — Movable finger of chelicera with a row of 9-10 



