AQUATIC INSECTS IN NEW YORK STATE 481 



General color luteoiis; head large, broad, ferruginous, the 

 sides convex, marked behind with obsolete luteous spots; pro- 

 thorax much narrower than head, longer than broad; sides of 

 middle obsoletely impressed; concolor or luteous spots behind 

 and at the sides; legs lurid, base of tibiae and some tarsal seg- 

 ments nigro-fuscous; antennae slender, light yellow to brown^ 

 dark at outer end; superior male appendages cylindric, long, 

 oblique, truncated at apex; inferior ones recurved at the apex,, 

 clavate; wings subcinereo to luteo hyaline; cross veins dark 

 except the middle part of those of costal region; veins luteous,. 

 partly fuscous; a few white dots, usually only one to a cell;. 

 front pair with cross veins between all branches of radius about 

 25, media with three branches, Cui with four to five branches. 

 Length to tip of wings 55 to 85 mm; alar expanse 110 to 140 mm. 



Vera Cruz, Mexico, Brazil, Cordova, Spain. 



7 C. batesii McLachlan 



1868 Corydalis batesii McLachlan, Linn. Soc. Jour. 9:232, pl.8,. 

 fig.l 



Color of body brown, or dusky on the abdomen; head above 

 and beneath dark brown; mandibles of female black at tips;, 

 palpi black; head marked behind with five punctures, front 

 margin yellow; ocelli j^ellow; eyes dark olivaceous; prothorax 

 longer than broad, scarcely dilated behind, sides nearly parallel,, 

 very convex above, smooth, dull brown, with three short im- 

 pressed concolor spaces behind; mesothorax and metathorax 

 scarcely broader than the prothorax, pale brown; legs finely 

 pilose, fuscous, paler beneath, all tarsi and the apical part of 

 the tibiae yellowish, specially behind; antennae yellow with, 

 black tips, very slender, not toothed, not over two thirds the 

 length of the body; wings long and narrow, front pair ashy, 

 dusky area beyond the middle, many blackish blotches in front 

 portion, one at stigmatic region, several in subcostal region, 

 and others back of the radius, white dots in the cells, several 

 angles of the veins black, cross veins mostly black except the 

 middle parts of those in the basal half of costal region; hind 



