Tertiary Spiders and Opilionids. 



129 



be studied under higher power and the sternum is not clear. The 

 generic afiihation of the species is therefore entirely based on 

 external similarity with recent representatives of the genus Seges- 

 tria. Scudder's description and measurements are correct and 

 need not be repeated here. It may be added that there are two 

 pairs of spines on the underside of the first, second and third 

 tibia (the first left leg is shown in text figure ja). The meta- 

 tarsi of the third pair have also two pairs of spines below. The 

 tarsi and metatarsi of the first and second pair of legs show a 

 distinct scopula of short hair. The fourth pair of legs has more 

 spines than any other, but the spines are not so regularly arranged 

 (textfigurc ^b). Legs in order 4123. 



Figure 4. — Scgcstria scitddcri n. sp. x 3-33,. 



Segestria scudderi n. sp. {Text figure 4). 



A single female No. 16379 U^ow Xo. 117) of the Scudder Col- 

 lection of the Museum of Comparative Zoology in Harvard Uni- 

 versity. 



