— lo - 



nulated farther up on the inner surface, even somewhat on the upper 

 side, and tibia granulated on the upper surface, which is not the case 

 with the rather numerous specimens I have examined. 



Cliellfer communi* Balzan. 



1890. Chelifer communis Balzan, Rev. d. Pseudoscorp., p. 416, tav. 13, fig. 4. 

 1902. » » » Ellingsen, Pseudoscorp. de l'Equat., p 167. 



Paraguay: Puerto Bertoni 2 specimens 9 (A. Bertoni de Winkelried); 

 Argentine: Tala 5 specimens, 1 d, 4 9, very small; Brazil, Matto Grosso: 

 Urucum 5 very small specimens 9 (Dr. A. Borelli). 



Subgenus Trachychemes. 

 No eyes. Generally two distinct transverse grooves on the cephalo- 

 thorax. Hairs more or less davate. 



Synopsis of the South American species. 



1. Hand with strong protuberances . . . Ch. armiger Balz. 

 Hand without protuberances 2 



2. Fingers of palps about as long as hand or longer . . 3 

 Fingers of palps mudi shorter, ca. 2 / 3 of hand ... 9 



3. Fingers of palps nearly 1 l j 2 times longer than hand, palps with 



partly very long, davate hairs . . . Ch. echinatus Eli. 

 Fingers of palps about as long as hand, a little shorter or longer 4 



4. Hand ali over smooth and glossy . . Ch. nitidimanus Eli. 

 Hand more or less granulated ....... 5 



5. Body glossy, femur well-nigh 3 times as long as broad Ch. pa- 



tagonicus Tullgr. 



Body opaque above (> 



G. Femur slender, nearly 4 times as long as broad, cephalothorax 

 much longer than broad, in <f: tergites dentateci behind. Ch. 



segmentidentatus Balz. 

 Femur broader, cephalothorax only a little longer than wide 7 



7. Femur about 3 times as long as broad, cephalothorax as long as 



broad Ch. foliosus Balz. 



Femur about twice as long as broad 8 



8. Femur nearly parallelsided, outer side only slightly convex. Ch. 



Michaelseni Simon. 

 Femur: outer side strongly convex Ch. brevifemoratus Balz. 



9. Cephalothorax with only one transverse groove, the base of the 



hand cordiform Ch. subrudis Balz. 



Cephalothorax with 2 trans verse grooves, the base of the hand 



rounded 10 



10. Tibia very short, when the stalk is excepted, almost spheric. 



Ch. subrotundatus Balzan. 



