25< 



Alexander Pctrunkevitch, 



but are apparently divergent. The carapace is slightly longer 

 than wide. The abdomen is oval, widest in its middle, evenly 

 narrowed at both ends. Legs in order 1243. They are clothed 

 with simple brown hair. There are distinct spines on all legs, 

 especially on the femora. 



Total length of spider about 6.8 mm. The first leg measures 

 13.5 mm., the second — 10.5 mm., the third — 4.5 mm., and the 

 fourth — 9 mm. 



Genus Tetragnatha Latreille. 

 TetragnafJia fertiaria Scudder {Text figure 26). 



Scudder, Arachnida in Zittel's Handbuch der Paleontologie, 

 Vol. I, II, p. 744. Fig- 927. 1885. 



Scudder, Tertiary Insects, 1890, p. yy, Plate 11, fig. 11 {$). 



One male from Florissant, Nos. 5000 (now No. 62) and 5898 

 (now No.- 90) in the Scudder Collection of the Museum of Com- 

 parative Zoology of Harvard University. 



Figure 26. — Tctrai^natha tcrliaua Scudder. Specimen No. 5898 (90). 

 Sternum, lip and maxillary lobes, x 13. 



A very well preserved specimen. Scudder's description is not 

 complete omitting to mention such structures as the lip, maxillary 

 lobes, sternnni and sjMnncrets. Moreover he mistook the maxil- 

 larv lobes for what he terms "the basal ])icce of the mandibles." 



