330 [April 



Euleucyptera cumatilis, n. sp. (Plate 2, fig. 6. 9-) 



Wings satiny white; anterior pair with an arcuated pale greenish 

 sub-basal band bordered outwardly obsoletely by the t. a. line. Median 

 space entirely pure satiny white. Reniform spot reflected from under 

 surface. T. p. line running much as in A. Packardii; above excavated, 

 making the m. s. widest at costa, and approaching the t. a. line below 

 median vein, making the center of the m. s. the narrowest ; undulate, 

 composed, in common with the t. a. line, of dark interrupted scales. 

 Similar colored greenish scales to those covering the sub-basal space 

 clothe the subterminal space. Subterminal line wide, white; terminal 

 space covered with pale greenish scales; fringes satiny white except at 

 apex where they are distinctly brownish. Under surface largely marked 

 with dull blackish, white along internal margin and narrowly so on 

 costa; two large ill-defined discal spots. 



Posterior wings satiny white with discal spot and narrow terminal 

 greenish band; fringes white. Under surface resembling upper, the 

 terminal band reduced. 



Body clothed with white hair as are the legs, on the vertex the hairs 

 become slightly testaceous ; thorax white. Maxillae well developed. 

 Antennae simple, rather stout. Exp. 9 l.OO inch. 



Hab. — Colorado Territory. Mr. James Ridings. (Coll. Ent. Soc. 

 Philadelphia.) 



The coloration of this pretty species reminds one somewhat of G/ia- 

 myris cerintha Gruenee. 



It is part of Adam's task that we arc fulfilling in naming these in- 

 sects, and in doing so we perform but a single duty of our intellect. 

 But when we shall have reduced into language the expression of the 

 properties and appearance of these beings, we arrive at a point beyond 

 which we cannot be said truly to understand their Life, and in this 

 connection the "Life of Insects" seems to me an improper title to a 

 book. It is that we may communicate with each other about these 

 fellow-inhabitants of Earth that we name and describe them; we can 

 open no communication with them themselves, who go only about their 

 own business and on this account perchance alone can have no sympa- 

 thy with men. Some such thoughts came to me on the sands, facing 

 the sea-mists, knowing not whither I was drifting and watching from 

 time to time Cicindela dorsalis Say, certain of which shared this igno- 

 rance with me, for I afterwards filled my collecting bottle at their 

 expense. 



