58 



AMERICAN SPIDERS AND THEIR SPINNINGWORK. 



to a reudier comjiarison from which to get clearer light, if possible, upon 

 some questions on the general relations between hosts and guests. ^ The 

 first column gives the name of the spider, when known, the second column 

 the name of the parasite, the third column the character of the parasitism : — 



Argiope cophinaria. 



Argiope argentata. 

 Epeira cavatica. 

 Epeira (unknown). 



Epeira cavatica. 

 Epeira strix (?). 



Epciia (liadeniata. 



Epeira cucurbitina. 

 Epeira antriaila (?). 

 Epeira cucurbitina. 

 Epeira angiilata. 



Epeirid cocoou. 



Tlicriilium spirale (?). 

 Theriilium (unknown) 

 Steatoda borealis. 

 Linyphia communis. 

 Labulla inconstans. 

 Tlieridiuni 

 Theridium 



Dictyna volujiis. 

 Micaria (unknown) 



Orbweavers. 



Pezomachus (?) n. sp. 

 Pinipla rnfopectus. 

 Pinipla scriptifrons. 

 Mestocharis wilderi. 

 Chrysocharis banksii. 

 Cbrysocharis jiikoi. 

 Eupelnuis piceus. 

 Large unknown larva. 

 Pinipla rulbijectus. 

 Holcopelte nitens.' 

 Bajus americanus. 

 Pezomacbus dimidiatus (?). 

 Pezomacbus gracile (?). 

 Poly.spbincta ktckcloi. 

 Polyspbincta .'itrigis. 

 Hemiteles s^imilis.* 

 lleniiteles tristator.* 

 I'impla oculatoria.* 

 Polyspbincta boiips.* 

 Polyspbincta carbonator.* 

 Polyspbincta rutipes.* 

 Polyspbincta carbonator. 



Polyspbincta tuberosa.* 

 Pinipla aquilonia ('.'). 

 Me.stocbaris wilderi. 

 Tetraslicbus banksii.' 



Lineweavers. 



Polyspbincta n. sp. 

 Pezomacbus fasciatus.* 

 Poly.si>bincta n. sp. 



Polyspbincta theridii. 

 Polyspbincta lioops.* 



Tubeweavers. 



Polyspbincta dicty ii;e. 

 Pezomacbus niicari;e. 



Egg parasite. 



Body parasite.' 

 Egg parasite. 



Body parasite. 



(1 u 



Egg parasite. 



It u 



Body parasite. 



Egg parasite. 



Body jiarasite. 



Body jiarasite. 

 Euu parasite. 



' Tbose species marked with stars (*) are European species. 

 - Within the body. 



^ Probably hypcrparasitic, jirimarily infesting some Ichneumonid in the spider's cocoon. ^ 

 Howard. 



* Hyperparasitic. Howard. 



