THE CANADIAN ENTOMOLOGIST. 207 



Thorax clothed with stout bristles and very fine short hairs, cinereous, 

 with four narrow blackish vittae ; scutellum, broadly light-reddish ochreous 

 at tip, with two stout lateral macrochietse, the posterior one reaching the 

 base of third abdominal segment, also a discal pair, and a short, decussate 

 apical pair. Abdomen rather broadly ovate, first segment black, some- 

 what abbreviated ; other segments cinereous, with a narrow blackish hind 

 margin ; first segment without macrochaetge ; second with a lateral 

 marginal one and a median marginal pair ; third segment with about ten 

 marginal macrochset^e above, and others below ; anal segment armed with 

 marginal and sub-discal macrochsetae. Legs black, bristly, femora some- 

 what silvery ; tibiae with stout bristles, especially hind pair which are also 

 ciliate on outer edge, a longer bristle in middle and another at tip ; 

 claws and pulvilU slightly elongate. Wings longer than abdomen, with- 

 out costal spine, grayish-hyaline, third vein spined at base ; apical cell 

 ending a little before tip of wing, narrowly open j fourth vein rounded at 

 bend, without stump or wrinkle ; apical cross-vein nearly straight ; hind 

 cross-vein sinuate, nearer to bend of fourth vein ; tegulse whitish, halteres 

 fuscous. 



Male. — Differs as follows : — Smaller ; front hardly more than one-third 

 width of head ; face not so broad ; no orbital bristles ; antennae nearly as 

 long as face ; third joint about five times as long as the short second ; 

 claws and pulvilli not elongate. 



Length 6 to 7 mm.; of wing 5 to 6 mm. 



Described from two specimens, $ ? , from Professor F. M. Webster, 

 and bred by him from a chrysalis. Lafayette, Indiana. 



NOTES ON THE DYSDERID.E OF THE UNITED STATES. 



BY NATHAN BANKS, ITHACA, N. Y. 



The Dysderidce is a small family of spiders occupying in a certain res- 

 pect an intermediate position between the Tetrapneiimones and the Dip- 

 neumones ; the openings to the trachese are just behind the lung-slits, so 

 that they may appear to have four lungs. The eyes are six in all of 

 our forms. The mandibles are not small, in Dysdera quite large. The 



