ENTOMOLOGICAL SECTION. XVll 



fourth joint, joints regularly subequal, last joint being longer than penultimate; 

 thorax black, smooth and shining, parapsidal grooves distinct, converging towards 

 scutellum and separated from it by a slight ridge ; scutellum punctate ; abdomen 

 longer and wider than thorax, black, smooth and shining ; legs reddish-yellow, 

 tibiae to feet paler, basal half of coxse black; wings hyaline, radial area open, 

 areolet distinct, veins black. 



% . — Length .08 inch. Mouth parts brownish, scutellum coarsely rugoso-punc- 

 tate, peduncle long; legs yellowish-brown, coxte yellowish, feet black. 



Described from numerous specimens raised in March. 



The GrALLS op the Willow Oak, Quercus hnu-ifnllse. 

 TliLs particular species of oak is classified by botanists as a variety of 

 Quercus jjhel/os, and from it I have obtained nine distinct species of galls. 



The Cherry Stone Leaf Gall. 



This popularly designates a. unique gall that appears early in February 

 and March, on the tender new leaves — fref(uently three on a leaf. It may 

 possibly be the one referred to by Prof. Westwood as described by Bosc, 

 from Georgia, vide Intro. Entom. vol. 2, p. 181, ed. 1840. He says: 



" Another gall of the size of a pea, found on another species of oak 

 has the outer surface very thin, and encloses in the interior a small ball 

 the size of a grain of millet which rolls about, and within which the 

 larva is lodged. M. Bosc opened hundreds of these galls without being 

 able to learn the true nature of this production." 



Baron Osten Sacken, loc. cit. p. 62, discovered a similar gall Cynips q. 

 palustris on Quercus palustris. My species is at once distinguished from 

 it by having 14-jointed antennae in '^ , va. punctation, coloration, by the 

 veins of wings being black, and by the long bent peduncle in the % . 

 It evidently belongs to Hartig's genus Spathegaster. 



Spathegaster q. laiirifolise n. sp. 



Galls. — Green, globular, hollow galls, growing through the leafy 

 expansion of the newly formed leaf, projecting about equally from the 

 upper and on the under surface of the leaf, the size of a cherry stone 

 and when removed not unlike it in shape, containing a yellowish, slightly 

 elongated kernel, which rolls freely about. Length .20 to .25 inch, 

 .15 or more through. 



Gafl-Fli/.— ^ .—Jjcngth .10 inch. Black, head slightly but faintly punctured, 

 mouth parts reddish, palpi yellowish ; antennae 14-jointed, joints one and two 

 yellowish, others dark reddish-brown, pubescent, third joint nearly thrice as long 

 as second; thorax smooth but appearing microscopically punctate with a high 

 power, parapsidal grooves moderately distinct, longitudinal furrows distinct ; 

 scutellum deeplj' rugoso-punctate, opaque and slightly hair}"- ; abdomen globose, 

 smooth, black and highly polished; wings hyaline, veins black: legs yellowish- 

 red, posterior coxre excepting apex and feet black. 



%. — Length .08 inch. Antennw L5-jointc<l ; olevntod and projecting posteriorly, 



mOXTIU.Y PROC. KNT. SEC. A. N. S. (4) JUNE, 1881. 



