256 Alexander Petniiikei'iteh, 



Genus Palaeopachygnatha, new. 



Spiders resembling recent PachygJiaflia. Chelicerce strongly 

 divergent. Genotype: P. sciidderi. 



Palaeopachygnatha scudderi n. sp. {Text figure 24). 



= Tlieridium seeliisiiiii Scudder ad partem specimen No. 2286 

 (now No. 87) in the Scudder Collection of the Museum of Com- 

 parative Zoology of Harvard University. 



Figure 24. — Falccopacliygmitlni scnddcri n. .sp. Specimen No. 2286 (87). 

 X 3-33- 



One specimen from Florissant, probably a female. 



This species, which Scudder has erroneously identified with his 

 Tlieridium seclusum, is at once easily separable from the latter by 

 tbe difference in the relative length of its legs and the appearance 

 of its chelicerse. The chelicerse are strongly divergent, a cir- 

 cumstance which decided me in placing the species under a genus 

 allied to Pachygnatha with wbich the spider has external resem- 

 blance. The specimen has a very faint appearance, yet is well 

 preserved. Its anterior legs as well as the legs of the second pair 

 are broken ofif across the femora. The third and fourth pair are 

 complete, but the claws are indiscernible. There is no trace of a 

 comb on the fourth tarsi. The legs are clothed with simple 

 brown hair and show a few spines. One of the spines is plainly 



