April, igoi] 



PSYCHE. 



189 



I'he species has been frequently 

 figured. 



Diapheromera veliei. 



Diaphcromcra velii Walsh, Proc. ent. 

 soc. PhilacL, iii, 409-410 (1864). 



Originally described from Nebraska, 

 and since then reported only from that 

 state and Illinois. I have seen speci- 

 mens from Maryland (Uhler), Virginia 

 Wirt Robinson), Georgia (Morrison), 

 Ohio, Southern Illinois (Thomas) , Man- 

 itoba, Dallas Co. and Jefferson, Iowa 

 (Allen), Lincoln, Valentine and Sand 

 Hills, Nebr. (Brunerj, Platte River, 

 Nebr. (Hayden), Barber Co., Kans. 

 (Bruner), Dallas, Tex. (Boll), Ringgold 

 Barracks, Tex. (Schott) , Pecos River 

 (Capt. Pope), Albuquerque, N. Mex. 

 (Bruner), Sancelito, Mex. (Palmer), 

 San Pedro and Montelovez, Coahuila, 

 Mex. (Palmer) , and Venis Mecas and 

 Sierra San Miguelito, San Luis Potosi, 

 Mex. (Palmer) . 



Diapheromera mesillana sp. nov. 



(^ . Slenderer than D. femorata , uniform 

 greenish fl.avous, the antennae infuscated 

 beyond the basal third, the thorax smooth, 

 with an obscure median carina ; subapicnl 

 inferior spine of middle and hind femora 

 rather slight. Mesothorax and metathorax 

 (including median segment) of equal length. 

 Seventh and ninth abdominal segments sub- 

 equal in length and distinctly longer than 

 the eighth, all equal in width and nowhere 

 enlarged, the ninth ratlier feeblv and angu- 

 larly emarginate, exposing a small, trans- 

 verse, apically arcuate, supraanal plate; cerci 

 about as long as the ninth abdominal seg- 

 ment, rigidly straight, directed backward and 

 not at all downward, slender, tapering, blunt 

 tipped, externally convex, and internally 

 conca\'e. 



Length of body, 55 mm.; head, 3 mm.; 

 antennae, circa 37 mm.; mesothorax, 12.5 

 mm.; tore femora, 14.5 mm.; middle femora, 

 II mm. ; hind femora, 13.5 mm. 



2 $ . Between Mesilla and Las 

 Cruces, N. Mex., June 30 (A. P. 

 Morse). 



LIFE HISTORIES OF NORTH AMERICAN GEOMETRIDAE. — XXI. 



BY HARRISON G. DYAR, WASHINGTON, D. C. 



Eudttle vitndica Walk. This larva has 

 proved unusually difficult and for no real 

 reason. As early as 1S71 Mr. W. Saunders 

 published on the first stage, but was unable 

 to go further as he could find nothing that 

 the larvae would eat. I have tried the same 

 experiment with equal ill success, till the 

 fortunate discovery of the food plant by 

 Mr. Lucock (Can. ent., xxx, 24S, iSgS) ren- 

 dered the whole matter simple. The food 

 plant was also independently discovered by 



Mr. W. D. Kearfott, who has kindly pre- 

 sented to me an inflated larva and pupa 

 shells. 



The first stage has been described by 

 Saunders, the last by Lucock, both briefly 

 and the pupa has been remarked on by 

 Hulst and Smith. 



Egg. Suspended on a slender silken fibre 

 which runs from one object to another so 

 that the egg swings free in the air. In 

 nature the eggs were found laid on sheep's 



