6 Annals Entomological Society of America [Vol. VII, 
larval stages, which is not the case with the agamic form. 
Fig. 27, Pl. III, represents a mature larva of the sexual form, 
and may be compared with Fig. 19, Pl. III, which represents 
a mature larva of the agamic form in the corresponding stage. 
In the open the adults did not emerge until the twenty-ninth 
of May, and continued to oviposit from that time until the 
fifth of June. Oviposition here was as observed in the labora- 
tory, the time occupied corresponding exactly to that already 
noted. Fig. 4, Pl. I, shows a female of the sexual form. 
The sexual form which possesses the characteristics of 
the genus Dryophanta may be described as follows: 
Female: Color. Head, thorax and abdomen shining black, nonpubes- 
cent; mandibles yellowish brown; mouthparts yellow; antennae first 
two joints yellowish, flagellum shading to black at the tip. In the 
male the entire antenne are black. Length 2mm. 
Head: Face opaque, surface irregular, rugose about the ocelli; 
compound eyes 200yu.x300u. Distance between compound eyes and 
hind ocelli 75u.; between hind ocelli 100u.; between compound eyes and 
fore ocelli 500u. Distance between compound eyes and antennez 75x. ; 
between antenne 75u. Width of head at temples 1.50mm.; mandibles 
tridentate, mouth parts as in Figs. 21, 22, and 23, Pl. III. Antenne 
fourteen jointed,(Figs. 28 and 29, Pl. III). 
Thorax: Smooth, parapsidal furrows distinct posteriorly, obsolete 
anteriorly, pluree smooth. 
Scutellum: Rugose, becoming smooth in front, cross furrow 
reduced to a shallow depression (Fig. 26, Pl. III). 
Appendages: Wings hyaline, fringed with setz, veins yellowish 
brown, (Fig, 24, Pl. III); legs yellowish, coxz of the third pair yellow- 
ish brown. 
Abdomen: Smooth, deeper than long, first segment one-third the 
size of the abdomen, outline of the remaining segments as seen from the 
side serrate; ventral spine and tip of abdomen hairy. 
Male: Color. Same as female, length 14mm. 
Head: Distance of compound eyes to hind ocelli 50u 
“ between hind ocelli 150u 
“ of compound eyes to fore ocelli 600u 
“of compound eyes to antennz 50m 
“between antennze 50u 
Antenne fifteen jointed. 
Thorax: Mesonotum more gibbous than in female. 
Abdomen: Petiolated, longer than deep as seen from the side; 
petiole cylindrical. 
On the twenty-fifth of June the first evidences of gall- 
formation appeared on the leaf-veins, the hypertrophied 
tissue pushing through the slightly ruptured epidermis. The 
