126 rvxirinms a alls and call-wasps—ashmead. voi.xix. 



apex of the wiii,u-; veins piceous, the areolet wantiug-, the cubital cell 

 closed. 



T,fpc.—yo. 3077, U\S.N.M. 



Five specimens, reared dining- June, 1882, from galls received ]\Iay -, 

 1882, from ]\rr. II. K. ^lorrison, collected at Fort (Iraut, Arizoiui. The 

 gall is said to grow on the Idossoms of an oak. 



2:;. AMPHIBOLIPS ACUMINATA, new species. 



(iiUi. — The mature s[>ecinu^ns of this species average consideral»ly 

 over 2 iuches long by more than an inch in diameter; they are brown- 

 ish yellow, subglobular, and acuminated at ai)ex, constructed on the 

 same princi])le as most of the api)le galls, having" a central kernel, held 

 in place by a spongy substance, and a very thin shell. Some si)eci- 

 mens are nuuh more acuminated than others and what may be termed 

 ])epper-sliaped, iu)t more than half an inch in diameter and much less 

 than 2 inches in length. The gall is attached to the twigs. 



Galljiy. — Female. Length, o mm. In stature and color this si)ecies 

 approaches nearest to A. sponf/ifica., Osteu-Sacken,butthe sculpture is 

 more coarsely rugose, the parapsidal grooves distinct, while the hind 

 legs are black. 



Type.—^o. 3078, U.S.K.M. 



One female spe<'imen, reared June 24, 187U. The gall occurs in ^A"ash- 

 ington on (^Kcrcus iiigcr. The specimen from which the tly Avas reared 

 was taken by Dr. L. (). Howard in ]Maryland. 



Genus HOLCASPIS, Mayr. 

 21. HOLCASPIS PERSIMILIS, new species. 



(iall. — A small, hard, globular gall, occuriing on the twigs of the 

 black oak and very similar in structure to other n()lcasi)id galls. It is, 

 however, smaller, less than 7 mm. in diameter, and exteriorly it is very 

 rough or rugose, with irregular raised lines and ridges. 



GallfJy. — Female. Length, 4 mm. Head, antenn;e, thorax, and legs 

 brown, covered with fulvous pile. Vertex of head and streaks on thorax 

 black. Antenna' l.'vjointed, rather long. Head and thorax i)unctate; 

 the parai^sidal grooves are obsolete anteriorly; anteriorly are two short 

 median grooves, extending i)osteri(uly to more than half the length of 

 the mesonotum, Avhile the groove on the shoulders is long. AIeso])]enra 

 punctate, the sculi)ture hidden by the i)ubescence. Abdomen black, the 

 sides of the large second segment pubescent; apices of the short ter- 

 minal segments dull rufous. The spine of the ventral valve is as long 

 as the second i)Osterior tarsal Joint and very hairy. 



Wings hyaline, veins piceo-black, the areolet distinct, but the sur 

 rounding veins — exce]>t the outer vein, which is thick and angulated — 

 delicate; cubital cell o])en at base; the vein at base of radial cell 

 angulated. 



Typc.—yo. .3079, I'.S.N.M. 



