198 ENTOMOLOGICAL NEWS. 



greenish white; scape beneath and the legs, except coxae, trochanters and 

 base of femora, rufo-testaceous; wings subhyaline, apical margins fus- 

 cous; nervures and stigma deep black; the median cell of fore wings with 

 a ferruginous stain, the costal and median nervures beneath colored like 

 the legs. 



(j\ Clypeus deeply and roundly emarginate anteriorly, with fine, sparse 

 punctures; first joint of flagellum scarcely as long as the two following 

 united; clypeus entirely, scape beneath, and coxae beneath yellow; legs 

 with a yellowish tinge; flagellum beneath testaceous. 



Var. Greater part of legs and hind margins of the abdominal segments 

 yellow. 



Brookings, S. Dakota (J. A. Aldrich); Colorado (coll. Amer. 

 Ent. Soc.). The color of the legs will distinguish this species. 

 Appears to occur abundantly from May 3Oth to June loth, as Mr. 

 Aldrich sent me about thirty specimens. 



-o- 



ELEMENTARY ENTOMOLOGY. 



LEPIDOPTERA-HETEROCERA (Moths). 

 By Prof. JOHN B. SMITH, New Brunswick, N. J. 



The little family Heterogynidae belongs, in most respects, to 

 the Zygaenid series. In it the primaries have two, the secondaries 

 three internal veins, as in the Pyromorphidae. It differs, how- 

 ever, in having a distinct, free costal vein to the secondaries, 

 while the absence of this vein is one of the distinctive features in 

 the immediately preceding group of families. It is, perhaps, 

 questionable whether we have any true Heterogynidae in North 

 America. 



Following these, comes a small series of what may be termed 

 Arctiid families. All agree in having only a single internal vein 

 to the primaries and two in the secondaries. The costal vein of 

 the primaries arises from the subcostal about one-third the dis- 

 tance from base. In one instance, Euerythra, it is altogether 

 wanting. Vein 5, in both primaries and secondaries, belongs to 

 the median series, and arises close to vein 4. The larvae, in the 

 majority of instances, are hairy caterpillars, usually transforming 

 in a loose cocoon, in the manufacture of which the hairy clothing 

 is used to eke out the scanty supply of silk. To facilitate this, 

 the hair is quite commonly barbed or branched, so that it felts 

 easily. 



The Nycteolidae are small moths that are usually puzzles to the 



