270 Alexander Petruukevitch, 



Epeira emertoni Scudder. 

 Sciidder Tertiary Insects 1890, p. 87, Plate 11, figs. 15 {$), 



19(9). 



One male, No. 8777 (now No. iii) and two females, Nos. 10998 

 (now No. 112) and 51 17. The latter I have not seen. Specimens 

 in the Scudder Collection of the Museum of Comparative Zoology 

 of Harvard University. 



Scudder's description is correct. I am not able to decide 

 whether the specimens represent a male and a female of the same 

 species. 



Epeira longimana n. sp. {Textfigiire 34). 



One rather poorly preserved male from Florissant. No. 16378 

 (now No. 123) in the Scudder Collection of the Museum of Com- 

 parative Zoology of Harvard University. 



The specimen is complete except for a small fraction of one 

 chelicera and of the side of the abdomen. Total length — 7.3 mm., 

 Abdomen — 4 mm. long, 3 mm. wide in its anterior third. It is 

 typical of the shape of recent species of Epeira. The palpi are 

 not clearly discernible, nor can the separation line between the 

 carapace and chelicerse be demonstrated. Although the spider 

 represents the ventral aspect, the sternum is not discernible, nor is 

 there any trace of the edge of the carapace. The shape of the 

 abdomen is as represented in our figure, but at first glance one sees 

 only the darker area. It is the presence of brown hair on the 

 abdomen, which helps to establish the true outline of the latter. 

 There is similar hair on the legs, together with some distinct 

 spines. The legs are in order 1243. The characteristic feature 

 of this species is the proportion in the length of the tibiae of the 

 first and second leg. As shown by the measurements these tibije 

 are considerably shorter than the corresponding femora, a condi- 

 tion unusual in Epeira and possibly of a generic value. 



Measurements of legs: First leg, femur — 5.2 mm., tibia with 

 patella — 3.8 mm., metatarsus with tarsus — 6.0 mm., total — 

 15.0 mm.; Second leg, femur — 3.8 mm., tibia with patella — 

 2.8 mm., metatarsus with tarsus — 4.2 mm., total — 10.8 mm. ; Third 

 leg, femur — 1.8 mm., tibia with patella — 1.7 mm., metatarsus with 

 tarsus — 1.8 mm., total — 5.3 mm.; Fourth leg, femur — 2.7 mm.. 



