SPIDERS OF THE PHIDIPPUS GROUP OF THE FAMILY 



ATTIDAE. 



GEOEGE W. PECKHAM^ AXD ELIZABETH G. PECE:nAM. 



In the following paper we liave attempted to classify the 

 spiders belonging to Phidipims and some related genera. Other 

 genera must be included in this group but the work on them 

 is not yet completed. 



We are much indebted to M. Eugene Simon and to Mr. 

 ISTathan Banks for their generous assistance in lending us type 

 species. 



The drawings are by ^Ir. J. H. Emerton. 



PHIDIPPUS (C. K) 1846. 

 Megatimus Thorell, 1891, Spindlar Xikobarerna, p. 129. 



PL XXIII, figs. 1-lb. 



Spiders above medium size, sometimes very large and hairy. 



The cephalothorax is high and massive, wide and rather 

 short. As a rule the sides round out widely both from above 

 below and from in front to the middle point. The widening 

 from above below is usually more pronounced in the males 

 than in the females. The cephalic plate slants forward. The 

 thoracic plate is short and wide. The thorax falls from the 

 dorsal eyes, at first gradually and then more steeply. 



The quadrangle of the eyes is one-third wider than long, ex- 

 cepting in a few species, as arizonensiSy which is one-haK, and 

 opifeXj which is two-thirds wider than long. It occupies about 

 two-fifths of the cephalothorax and is plainly wider behind than 

 in front. The eyes are small in proportion to the size of the 



