Vol. Xxix] ENTOMOLOGICAL NEWS. 99 



problem as puzzling and as interesting as that of the California 

 Flower Beetle (Diabrotica soror}. 1 During the latter part of 

 the summer most of them are light green marked with the reg- 

 ulation "belt" of light yellow, but careful observation from day 

 to day will reveal a few individuals that are marked rather 

 sharply instead of the "belted" effect they present the ap- 

 pearance of being spotted and the spots are nearly white since 

 they have almost lost the yellow shade while the back-ground 

 of green seems to have taken on a deeper shade. When killed 

 and placed in the cabinet such individuals fade out so com- 

 pletely that it is impossible to distinguish them from the reg- 

 ular forms. The proportion of this form increases as the time 

 for hibernating approaches. The "old age" phase seems to be 

 a faded green with an increasing "belted" effect. 



The Genus Lycaena, Enoptes Group (Lep.). 

 By R. C. WILLIAMS. Jr., Philadelphia, Pa. 



(Plates IV, V, VI.) 



Until recently the species of these butterflies have been con- 

 fused in collections. In 1911, Dr. Henry Skinner (Ent. News, 

 XXII. p. 259) considered the three names then in use repre- 

 sented but forms of one species. In this he was then justified 

 by the fact that they are extremely close in color and macula- 

 tion, and all variable, and the types were not available, that of 

 enoptes Boisd. being in Europe, battoidcs Behr destroyed and 

 glancon Edwards not fixed. 



A further study of the male genitalia, however, showed a 

 remarkable difference in the clasps, and in 1916-17 Drs. Barnes 

 T'.nd McDunnough. in their valuable work (Cont. Lep. N. A 

 III. p. 116, p. 213), added a number of names to the list and 

 figured the species and male genitalia. 



In the meantime, to definitely place the first species, enoptcs, 

 \\hich is in Mr. Charles Oberthiir's collection at Rennes, 

 France, and which he so beautifully figured (Etud. Lep. Coinp. 

 IX. PI. 237, Fig. 1948 tf . 1949 9 "I in 1913. I sent to him 



journal of Economic Entomology, Vol. 8, page 515. 



