40 PECKHAM. [Vol. 3. 



usually widest behind the dorsal eyes, but in some species (as 

 in the type) they are nearly parallel from just behind the sec- 

 ond row of eyes to just in front of the posterior border. They 

 slant outward from above downward, more widely in the male 

 than in the female. The quadrangle of the eyes is equally 

 wide in front and behind or slightly wider behind, and is from 

 one-fourth wider than long to nearly twice as wide as long. It 

 occupies a little more than one-third of the length of the cepha- 

 lothorax. The anterior eyes form a curved row ; the middle 

 being less than twice as large as the lateral. They are all sepa- 

 rated, the lateral more widely from the middle than the mid- 

 dle from each other. The second row is a little nearer the first 

 than the third row. The third row is not so wide as the cepha- 

 lothorax at that place. 



While this genus is closely related to Fhidippus, the shape 

 of the cephalothorax is somewhat different, the sides being 

 more nearly parallel. Moreover, the quadrangle of the eyes is 

 much wider behind in PMdippus. From Flexippus also it differs 

 in shape, as well as in having the first row of eyes curved, 

 while in that genus it is straight. 



The genus Pldlseus is represented in Mexico and Central 

 America not only bj^ the species described below, but by P. 

 fariilis P. and P. mexicanus P., from Mexico, and by P. chrysis 

 Walck., from Mexico and Guatemala. These three species are 

 described in our paper on North American Attid^, pp. 27, 28 

 and 30. 



PHILiEUS LUTEUS, SP. NOV. 



S . Length, 9. Length of cephalothorax, 4 ; width of 

 cephalothorax, 3.7. 

 Legs, 1423 ; first pair stoutest and much the longest. 



This spider is a little above medium size. The first legs 

 are long, and the falces are obliquely directed forward, and 

 divergent, with long fangs. 



The cephalothorax is high in front. It falls gradually 

 from the dorsal eyes, and then a little more steeply toward the 



