THE CANADIAN ENTOMOLOGIST. 183 



appear to be the same as the corresponding seasons of irus, the butterflies 

 rarely enduring into June. From the observations of W. H. Edwards, it 

 is evident that the species is flying in West Virginia nearly a month before 

 it ai)pears at Albany. 



Securing the Eggs. — Edwards was led to imprison a female over wild 

 ])lum ( Prmnis Americana ?) by having once discovered an unknown 

 Lyccsnid larva boring into the fruit of that plant. He secured eggs. 

 Since there are no plums, wild or cultivated, on the uninviting and almost 

 uninhabited pine-barrens where Henrici is most abundant in this region, 

 the local food-plant had to be determined. 



During the spring of 1905 every female captured was confined over 

 plum and Liipinus perennis (the food-plant of /rz^j),but no eggs were laid. 

 About noon on the 28th of May a worn specimen was observed flying 

 weakly among the low shrubbery, and in the hope that it might prove to 

 be a fertile female I followed it. Several times during the afternoon the 

 insect alighted on Vaccinium vacillans, curled its abdomen and pressed 

 the tip against some part of the plant, usually a bud, but no eggs were 

 extruded. This and another fresh-looking female taken on the 24th were 

 then confined over vacilians. The next day both were dead. Dissection 

 showed that the abdomen of the worn butterfly contained a single egg, 

 while that of the other contained fourteen. The ova were very soft, and 

 it was impossible to determine more than that they differed considerably 

 from, irus eggs. 



Henrici first appeared in 1906, on the 28th of April, and on the 7th 

 of May I had the good fortune to disturb a pair /// copulo. The flight was 

 short, and the injects alighted on one of a number of long straws lying 

 among the dry persistent stems of a clump of Ceanothus in such a position 

 that it was not advisable to risk an attempt to cover tlv^m with the net. 

 The posture of the butterflies during coitjis merits attention, as it doubtless 

 explains or is explained by the peculiar modification of the genitalia found 

 in the Theclidi. I have witnessed the coitus of all our local Chryso- 

 phanidi and Lycaenidi, and in every instance the abdomens of the 

 copulating insects were held approximately in the same line ; these 

 butterflies held their abdomens high so that they formed an angle of about 

 ninety degrees, as illustrated in the plate (fig. 4). The wings were closely 

 api^ressed, the secondaries lifted away from the body, and the primaries 

 dropped backward between them so that, except for the projecting apices, 

 they were completely hidden. Whenever the female moved forward even 



