Superfamily Argiopoidea 



female measures about three tenths inch in length; the male, about 

 one fourth inch. 



This spider occurs in the northeastern United States and 

 south to the District of Columbia. 



Pirata insularis (P. in-su-la'ris). — The sides of the carapace 

 are brown crossed by radiating lines of black; there is a median, 

 forked, reddish yellow band of the usual form, and on each side 

 of the thoracic part a yellowish supramarginal stripe limited 

 below by a narrow dark marginal stripe; there is no marginal line 

 of white hairs. The abdomen is blackish above, with a yellow 

 lanceolate median basal stripe; on each side of the apex of this 

 stripe there is a yellow spot; and on the hinder part several yellow 

 chevrons or nearly straight transverse marks; in life there is a 

 row of bunches of white hairs. The form of the epigynum is 

 shown in Fig. 724, e. The female measures one fourth inch in 

 length; the male, one sixth. 



This species occurs in the Eastern and Middle States. 



Pirata jcbriculosus (P. feb-ric-u-lo'sus). — The carapace is 

 dark brown or blackish with a reddish yellow, forked, median band 

 of the usual form and on each side of the thoracic part a moder- 

 ately wide yellow marginal band; in life there is a distinct line 

 of white hair along each lateral margin. The abdomen is black 

 or blackish brown above, with a narrow lanceolate reddish yellow 

 basal stripe which is margined with a line of black; outside of 

 this black line there is usually on each side in living individuals 

 a line of white hair or a row of white spots. The form of the 

 epigynum is shown in Fig. 724, /. The female measures about 

 three tenths inch in length. 



This is a widely distributed species. 



Pirata piraiicus (P. pi-ra'ti-cus). — This is a European species 

 of which Chamberlin describes a variety found in Utah, under the 

 name ntahensis. This species can be separated from our common 

 forms by the characters given in the table above. The female 

 measures one fourth inch in length. 



Genus ALLOCOSA (Al-lo-co'sa) ' 



This genus is closely allied to Lycosa; but the species included 

 in it differ from Lycosa in having the cephalothorax glabrous or 

 very nearly so, smooth and shining, dark in colour, and without a 



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