THE CANADIAN ENTOMOLOGIST. 231 



like, dark lines on fore wings easily separated from the other described 

 forms. 



Oncocnemis Gracillinea, n. s. 



^ . Size extremely small. Eyes naked. Tibiae with a large claw on 

 anterior pair, at the inner extremity of the joint, and an outer spinule. 

 Aspect, style of marking and color of Cibalis. Bright gray ; apices pro- 

 duced. A fine longitudinal black hair streak below median vein. Indi- 

 cations of transverse lines on costa by trembled blackish shades. 

 Subterminal line white, irregular, preceded by a black ditTuse shade from 

 apices, the most noticeable character of the wing, partly broken into 

 cuneiform marks toward the middle. A fine, even, continuous, black 

 terminal line. Fringes gray, darker tipped. Hind wings whitish, sub- 

 pellucid, silky, a fine terminal line and traces of a mesial line. Fringes 

 whitish. Head and thorax gray. Expanse i() mil. Arizona, Mr. Neu- 

 moegen. This neatly marked, diminutive species is the twentieth 

 described Oficocnemis from North America (see this volume, p. 34). The 

 ground color of the fore wings is almost white, with fine black streakings ; 

 and the subterminal shade very prominent, as in Cibalis. The scales on 

 the body are partly flattened and wide. The front is full. The species 

 may be catalogued next to Cibalis, in my arrangement, among the gray 

 forms. 



The genus is numerous in species in our territory. We have a repre 

 sentative of the European Confiisa, in Behrensii, from California. The 

 nearest species to this are Levis, Glennyi and Homogena from Colorado, 

 and Aiigushis from Texas. The only Eastern form is gray, like Chandleri 

 from Colorado. It is the Riparia of Mr. Morrison, and has been taken 

 on the coast of the Atlantic by Mr. Tepper, and by myself on the shores 

 of Lake Erie. Its describer considered it as a variety of Chandleri ; but 

 I am more inclined all the time to regard it as a good species, and thus to 

 contradict my own original idea of it, based, however, on a single speci- 

 men. I have myself now taken two, and have now seen others, and I 

 believe the characters I have elsewhere pointed out will always distinguish 

 it from Chandleri. The gray species are, then, Chandleri, Riparia, Alajor., 

 Aqualis, Cibalis and Gracilli)iea. Another interesting group of species is 

 that to which Saundersiana, from Canada and Illinois, belongs. This 

 species is the only one, beside Riparia, found east of the Mississippi 

 River. Its near ally is Occata, from Texas. The yellow-winged species 



