74 H. F. BASSETT. 



About one-half of my fifty or sixty specimens are males. 



Galls received from Miss Cora A. Clarke, Jamaica Plain, Mass. I 

 have galls, probably identical, which I found on the aments of the 

 red oak many years ago in Florida, Mass., but I did not succeed in 

 rearing insects from them. 



2. A. (Callirhytis) piisniatoides n. sp. 



Blister-like galls on the points of the acute lobes of the leaves of 

 Q. coccinea, each tipped with the long hair-like point that terminates 

 each lobe. They are ovate-acuminate, and look as if a bubble of 

 air had separated the upper and under lamina of the leaf They 

 are about one-third by one-fifth of an inch in diameter, sometimes a 

 little depressed vertically. The Avails are very thin, the color the 

 same as the leaf. Each contains a free, oblong-oval, thin walled 

 lai'val cell, whose length is fully twice its diameter. The free larval 

 cell of Dryophanta paiiistris, the only species with which this can be 

 confounded, is perfectly round, and the gall is larger, thicker, and 

 rarely found in the same position. 



Gall-flies. — Female. — Entire body shining black. Head small ; antennte 14- 

 jointed; first, second and third yellowish browu, remaining changing gradually 

 to dull, dusky brown ; first and second joints short, third equal to the preceding, 

 the rest of uniform length. Thorax smooth, median line heavy on the scutellum, 

 short; parapsidal grooves very distinct, converging closely on the scutellum; 

 scutellum finely and evenly rugose, fovese distinct, longer than broad, not deep. 

 Abdomen polished, second segment large, deep, and nearly concealing the re- 

 maining ones. Legs: trochanters black, or dark brown, the remaining joints 

 clear, dark brownish yellow, the posterior pair darkest, ungues simple. Wings 

 of moderate size, subfuscous, veins strong and distinct, areolet wanting, the 

 cubitus reaches a little more than half way to the first transverse vein ; radial 

 area open, and the veins bounding it of equal size throughout. Length : body, 

 .10 inch. ; wings, .10 inch. ; antennse, .08 inch. 



This is not a common species, though I have met with a few indi- 

 viduals nearly every year for many years past. They are the prey 

 of parasites to such an extent that I have never reared more than 

 two or three true gall-flies, and I have now but a single female fly, 

 of whose identity I am sure, and from which the above description 

 is made. 



3. A. (Callirhytis) reticulata n. sp. 



Polythalamous galls on the midvein and near the base of small 

 oak leaves from wdiat is probably one of the dwarf varieties of Q. 

 virens. Prominent on both surfaces, but more so on the underside. 

 They are almost round and (dried specimens) one-fourth of an inch 



