Tertiary Spiders and Opilionids. 241 



ing these two areas as points for measurement we may assume 

 that the abdomen is approximately 4.2 mm. long. The outline of 

 the carapace is also visible, though indistinctly. The carapace 

 seems to have been pressed out of shape, but in the live spider was 

 probably very wide in front. The legs are in order 4123. The 

 fourth leg is 7.6 mm. long, the first — 6.3 mm. The interesting- 

 feature of the armature of the legs is furnished by the strong, 

 curved spines on all femora. Less powerful but also curved spines 

 are found on all other joints except the tarsi. The fourth tarsi 

 alone are well preserved and are thickly clothed with hair. Entire 

 body and legs are covered with both long and short, simple hair. 

 No other structures are discernible. 



Genus Eoversatrix, new. 



With the characters of the famil}-, but with the legs in order 

 1243. Genotype: E. cversa. 



Eoversatrix eversa (Scudder). 

 = Clnhiona eversa Scudder, Tertiary Insects, 1890, p. 63. 

 Plate II, fig. 22 {$). 



Scudder describes two males from Florissant, Nos. 5944 and 

 8551. Of these I have seen only the former which is now No. 72 

 of the Scudder Collection of the Museum of Comparative Zoology 

 of Harvard University. 



Scudder's description is very good and need not be repeated 

 here. All 1 have to add is that body, palpi and legs are clothed 

 with simple hair. Also, Scudder does not mention the spinnerets 

 which however are well distinguishable notwithstanding the fissure 

 in the specimen. While one may not make out the details of their 

 structure, it seems to be certain that they are all approximated. 

 The order of legs 1243 is sufficient for the separation of this spe- 

 cies in a separate genus, since in all recent species of Clnhiona the 

 fourth leg is the longest. 



Genus Eobumbratrix, new. 



W'ith the characters of the family, but with the legs in order 

 2431. Genotype: E. latehrosa. 



