Palaeozoic Arachnida of North America. 79 



ment, the longest. Chelicera and pedipalpi missing. All legs with 

 a patella. First leg somewhat thinner than the others. Trochanter 

 of the first and second pair of legs one-jointed, of the third and 

 fourth pair two-jointed. Last joint of second leg formed by a 

 tarso-metatarsus with two round pads and two long, curved claws 

 at the end. The following joints of the legs are preserved : First 

 pair : coxa, trochanter, femur, patella and tibia of both sides ; 

 femur 3.0 mm. long. Second pair: coxa, trochanter, femur of 



Fig. 44. 



Figure A^^. — Polyochera pimctulata Scudder, holotype, U. S. N. M. No. 37971, 

 dorsal surface. X -r- 



the left leg and a complete right leg ; complete length 15.5 mm. ; 

 femur alone 5.5 mm. Third pair : coxa, two-jointed trochanter, 

 femur, patella and tibia of both sides ; femur 3.0 mm. long in 

 middle line. Fourth leg : coxa, two-jointed trochanter, femur, 

 patella and tibia of both sides ; femur 3.7 mm. long in middle line. 

 " The front border of the cephalothorax is a little elevated, and 

 behind it, extending nearly to the middle, a very broad, very shallow, 

 transverse depression ; there is also an equally slight but small 

 central depression, but all of these scarcely affect the extreme flat- 

 ness of the whole field which is shared also by the abdomen ; both 

 cephalothorax and abdomen are regularly and deeply punctate. 



