348 THE CANADIAN ENTOMOLOGIST 



hyaline and pubescent. Veins dark brown. Radial area open, 

 both veins very close to the costa. Cubitus continuous. Areolet 

 very large. Length 4-5 mm. 



Habitat. — Guanajuato, Mexico, Oct. 4, 1900. (A. Duges). 



Allied to Andricus cameroni Ashm.ead, but differs in the larger 

 size, the colour and sculpture of the thorax and in the wings being 

 considerably .more yellowish. It is one of the largest species of 

 Andricus. The gall is not known. The types are in the U. S. 

 Nat. Mus., and cotypes in my collection. 

 Biorhiza caepulaeformis Beutenmuller. 



When I described this species under the name Andricus 

 ccEpulceformis (Ent. News, Vol. XXII, 1911, p. 69), I was under the 

 impression that the wings had not been fully developed, because 

 the dead example was cut from a gall. Mr. Lewis H. Weld col- 

 lected many of the galls at Evanston, Illinois, early in October, 

 1916, at the base of red oak {QuercuS rubra) shoots growing from a 

 stump, and sent me many examples from which I cut at least fifty 

 fine, living- females, in October, 1916. Mr. Weld's specimens 

 issued Nov. 23-26th, so the species seems to emerge late in fall. 

 In all these the wings are abbreviated, consequently the species 

 must be removed from. the genus Andricus and placed in Biorhiza. 

 The head and thorax are dark rufous, and the scutellum is black. 

 The abdom.en is large, globular, smooth and highly polished, black 

 with the sides and junctions of the segments dark rufous. The 

 legs are very long, dark rufous with the tibiae infuscated, as are 

 also the femora of the hind legs. It measures from 4-5 mm., 

 in length, and the W'ings 2.50 mm. It very much resembles a queen 

 ant, but it is sluggish in habit and feigns death at the slightest 

 touch. When cut from the gall it emits a rather strong, fragrant 

 odor. It is a fine species and may be the alternating form of some 

 bisexual species. Possibly Dryophanta lanata. 

 Amphibolips nigra Beutenmuller. 



Gall. — On the twigs of a species of oak; monothalamous; 

 densely wooley and about the size of a small peach, and also some- 

 what the colour of this fruit, especially those on the trees suffering 

 from peach-yellows, probably white when fresh and tinged with 

 pink. It contains a' hard, thick-shelled, oval cell about the size 

 of a bean. Diameter 22-50 mm. 



