April, 1017] Tin gidcB from the United States 215 



Color. General color dirty white, with a few nervures marked with 

 brown. Antennae and legs dirty white, the ti])S of tarsi brownish. 

 Pronotum brownish or dirty white. Head, thorax and abdomen 

 reddish-brown or blackish-brown. The color markings vary slightly 

 in different specimens. 



Several specimens: Glascow, Montana, Nov. 6, 1915; Fort 

 Collins, Colorado, June 26, July 29, and August 17, 1S9S; 

 Boulder, Colorado, Sept. 1, 1898. Type in my collection; para- 

 types in the collections of Prof. Cooley, Dr. Osborn, Prof. 

 Lovett, Dr. Gillette, and the California Academy of Science. 



Corythucha padi spec. nov. 



Hood large, highly elevated, rather coarsely reticulate, very abruptly 

 constricted about the middle, narrow in front and nearly semiglobose 

 behind. Antennae clothed with a few long hairs, the first segment 

 almost three times the length of the second. Pronotum punctate; 

 median carina moderately raised, composed of one complete series of 

 areolae and with three or four extra cells at the highest part just in 

 front of the middle; lateral margins broad, renifonn, evenly and rather 

 closely reticulate, the outer margins armed with short spines; posterior 

 process triangular, not very distinctly reticulate. Rostral sulcus 

 broad, the sides considerably raised, reticulate (usually four areolae 

 on each side). Rostrum reaching between the intermediate coxae. 

 Elytra long, broadly rounded at the apex, the outer margin concave, 

 sinuate, and armed with short spines, except the distal third; costal 

 area broad, with three complete and a partial series of areolae at the 

 base, the cells at the base smaller than the distal ones. Length, 3.S mm. ; 

 width, 2.4 mm. 



Color. General color whitish, marked with brown. Antennae 

 testaceous, the apical segment embrowned. Hood brownish, the sides 

 in front whitish. Pronotum brown, the posterior process whitish; 

 median carina whitish, with a brownish spot near the middle; lateral 

 margins whitish, with a small brownish s])ot about the middle near 

 the outer margin; areolae hyaline. Elytra whitish, with a broad band 

 near the base, another near the apex, a spot on tumid elevation, and 

 more or less of some of the nervures near inner margins brown. Legs 

 testaceous, the tips of tarsi brownish. Body black beneath, the margins 

 of bucculae, rostral sulcus, and posterior margin of prothorax 

 embrowned. Claspers in male brown; middle portion of genital seg- 

 ment in the female embrowned. 



Numerous specimens, taken on western choke cherry at 

 Missoula, Montana, May 20, 191G, by Mr. J. R. Parker, and at 

 Corvallis, Oregon, May 25, 1909, by Mr. J. C. Bridwell. Type 

 in my collection; paratypes in the collections of Prof. R. A. 

 Cooley, Prof. A. L. Lovett, Dr. Herbert Osborn, and the Cal- 

 ifornia Academy of Science. In some specimens the apical 



