44 Journal New York Entomological Society, [^'o'- x>^v. 



arated by being smaller, less robust, having different colored an- 

 tennae and legs, a proportionally much longer elytra with a less defi- 

 nite color pattern, and also several other minor differences. 



A. nigrolineatus Van Dyke. 



A. nigroHneafus Van Dyke, Jour. N. Y. Ent. Soc, 1917, Vol. XXV, p. 36, 



Quite robust, somewhat convex, piceous black except elytra which are 

 yellow with basilar margin, a moderately broad common sutural stripe, another, 

 narrower, stripe extending from humeri to apex and joining with the sutural, 

 and a narrow marginal bead of deep black, and the abdominal segments which 

 have a reddish cast. Head and pronotum covered with a fine, sparse, and 

 yet distinct, yellowish pubescence. Apices of elytra slightly pubescent, under 

 surface clothed with a longer and denser pubescence. Head rather finely 

 densely punctate in front, more coarsely so between eyes and on occiput, 

 canaliculate between antennae. Antennae five-sevenths as long as body, first 

 joint large, longer than second and third together, third slightly longer than 

 fourth. Prothorax two fifths wider than head, wider than long, base slightly 

 wider than apex, about as wide as head, apex feebly arcuate, base slightly 

 lobed at middle, sides strongly, obtusely tuberculate at middle, disc coarsely 

 and confluently punctured, sides more finely so. Entire surface with a granu- 

 lose and opaque appearance, with a shallow fovea at middle. Elytral disc 

 very coarsely, but not closely, punctured from base to middle, thence more 

 finely punctured to apex. Length 14 mm. 



Mt. Jefferson, Oregon, July 20 (J. C. Bridwell). 



The type, a unique male, is in the collection of Dr. Van Dyke. 

 It was collected in the subalpine region of Mt. Jefferson and prob- 

 ably ranges throughout the true fir forest belt of the Southern Cas- 

 cades. 



THE GENERA OF HYDRIOMENIN^ OF THE UNITED 

 STATES (LEP.). 



Wm. T. M. Forbes, 

 Worcester, Mass. 



Our knowledge of the Geometridse has been much increased since 

 Hulst's paper in the Trans. Am. Ent. Soc, and general ideas of the 

 relative values of the characters he uses are somewhat changed. 

 The following paper is an attempt at a somewhat improved alinement, 

 as well as at a more workable key to the genera, which should avoid 

 the errors which more recent workers have discovered in his tables. 



