ICrU THE (JAN A in AN ENTOMOLOGIST. 



the other parts. Vertex beautifully reticulate. Antennae black, 14- 

 jointed, ist joint club-shaped, 2nd short ovate, 3rd as long as the two first 

 taken together, 4th one-fourth shorter than the 3rd, remaining joints 

 except the last short, sub-equal, last a little longer than the 13th. Thorax 

 black, smooth and shining. Parapsidal grooves two, deep and narrow ; 

 between them are two parallel depressions that reach from the collare 

 two-thirds the distance to the scutellum, but so very slight are they that 

 they can only be seen by means of the difference in the angles of reflec- 

 tion when they are placed in a strong light. There are a few scattered 

 hairs on the thorax and the polished and mirror-like pleurae are bordered 

 with short scattered white hairs. Scutellum finely wrinkled, rounded 

 posteriorly and projecting over the metathorax. Fovae small, widely 

 separated, shining. Legs a very dark reddish brown, a little lighter at the 

 joints. Wings hyaline, veins moderately heavy. Cubitus pale and 

 slender. Areolet small. Radial area open, short and broad by the cur 

 vature of the radial vein. Abdomen black and polished. Pedicel, which 

 in most species is a short thin plate, is in this more than half as long as 

 broad. First segment with a very few scattered hairs on the sides beneath 

 the wings. Sheath of the ovipositor slightly projecting, and at the end it 

 has a few long yellowish hairs. 



Length, body .11, wing .14, antennse .08. 



I )escribed from dry specimens in my collection. 



CVNIPS RUGOSA, n. sp. 



Round, hard galls, sessile, on the branches of Quercus prinoides. Size 

 from i^ to ^ of an inch in diameter. They are attached to the branch 

 by a small point. The surface when green is smooth and often quite red 

 on the side exposed to the sun. When fully ripe they have a shrunken 

 and shrivelled surface and the color varies from an ashen hue to a dull 

 brown. The free larval cell is surrounded by a yellowish brown cellular 

 mass, too dense to be called spongy, which fills the entire gall. This 

 species has been known to me for many years, but until lately I have con- 

 sidered it a variety of C. globulus Harris, but a careful study convinces 

 me that it is a distinct species. C. globulus is only on the white oak 

 and rarely more than one or two galls in a place, and has even when dry 

 a smooth surface, while C. rugosa is often found in clusters of four or 

 five and even more, so closely compressed that the galls are of an angular 

 or cuneate form. The flies are all females and' they mature and leave the 



