ART. 10 GALL-INHABITING CYNIPID WASPS WELD 105 



AMPHIBOLIPS COOKII GUlette 



The following additions to the published distribution data for 

 the species are here made: Ithaca and Medina, Atwater (Howe), 

 West Point (Osten Sacken), Katonah (Beutenmueller), N. Y. ; 

 EA^anston, Ravinia, Waukegan, Kingston, Willow Springs, and 

 Moline, 111.; Kilbourn, Wis., where the galls were so common in 

 the fall of 1908 that over 800 were collected; Poplar Bluff and 

 Ironton, Mo.; Tuskahoma, Okla. ; and Bluemont, Va. Brodie col- 

 lected galls at Toronto. In the fall of 1887 he put 187 galls on 

 the ground in garden where they lay all winter and the next summer. 

 The adults " began to come out October 25, 1888, fifty specimens 

 in all, some alive and ovipositing on December 1. They oviposit 

 in buds, the female surmounting the bud and grasping it with all 

 her feet, pushing the ovipositor between the scales of the bud." 

 He did not find a male. His notes describe the gall as nearly spher- 

 ical, 11-23 mm. in diameter, yellowish-green, thickly dotted with 

 slightly elevated reddish-brown spots. They may there be collected 

 on ground after middle of September usually under trees of large 

 size. The National Museum has galls from Elkhart, Ind. 



AMPHIBOLIPS ELLIPSOIDALIS, new species 



Female. — Head and thorax black, abdomen dark red, antennae, 

 mandibles, legs beyond femora brownish. Head rugose, pubescent, 

 not as broad as thorax, from above transverse, occiput concave, 

 cheeks greatly broadened behind eyes; from in front broader than 

 high, as 32 : 26, facial area square, malar space half eye, antennae 

 filiform, 15-segmented, lengths as (scape) 21 (width 10): 11 (8.5): 

 36(7) :23: 18: 16: 12: 11: 10:9:9:9: 8:8: 15(8). Thorax and legs 

 with white pubescence, dense and erect on sides of the rugose prono- 

 tum, closely appressed on mesoscutum, but not hiding sculpture. 

 Mesoscutum rugose in low relief, the tops of ridges shining; parap- 

 sidal grooves reaching forward to hind end of the fine anterior 

 parallel lines, lateral lines wider than anterior, a slight trace of a 

 median line in the sculpture. Scutellum rounded behind, with two 

 smooth oblique pits at base distinctly separated by a septum which is 

 continued back as a median carina in the sculpture of the broad 

 rugose disk. Carinae on propodeum straight, converging slightly 

 above. Mesopleura with a small bare polished spot. Legs stout, 

 hind tibia longer than tarsus, its segments as 45:22:14:9:27 (with 

 claw 33). Claws toothed. Wing slightly dusky, pubescent, ciliate, 

 subcosta, and two cross-veins clouded, free part of subcosta not 

 reaching margin, second abscissa of radius angled, areolet reaching 

 one-fifth way to basal, cubitus reaching basal. Abdomen not as long 

 as head and thorax, length of tergites on dorsal margin as 43 : 5 : 2 : 1, 

 60726—26 S 



