104 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



The females occur on the bark of the small limbs; the males upon the 

 leaves. 



Scale of female. — The scale of the female is long, narrow at the anterior end, much 

 widened posteriorly, and quite convex. The exuvise are brownish yellow; the secre- 

 tion, of which the remainder of the scale is composed, is white; but all of my speci- 

 mens appear dark gray, being more or less covered, with the hairs of the stem to which 

 the scale was attached, and with dust. Length of scale 2'""' (.Ob inch). 



Female. — The last segment of the female presents the following characters : 



The anterior group of spinnerets consists of about ten ; the anterior laterals of sev- 

 enteen to twenty, and the posterior laterals of ten to eighteen. 



This species differs from all Diaspiuie known to me in having a single undivided 

 lobe on the meson ; this lobe is large and rounded distally. The second and third 

 lobes of each side are very small and are laterad of small incisions in the margin of 

 the segment. In each case there is a reniform thickening of the body wall bound- 

 ing each incision anteriorly. There is also asimilarincisiou with a rudimentary lobe 

 and reniform thickening of the body wall about midway between third lobe and 

 penultimate segment. 



The plates are inconspicuous and spine-like ; there are usually one or two laterad 

 of second ventral spine, two or three between third and fourth lobe, and usually five 

 between fourth lobe and penultimate segment. The penultimate and antepenultimate 

 segments bear six each ; those on the latter are much expanded at the base. 



The spines are long and conspicuous; those on the dorsal surface are situated as 

 follows: One on each side at the base of the lateral margin of median lobe, one 

 laterad of each of the second and third lobes, and a fourth one near the center of the 

 anterior group of plates. Those on the ventral surface are as follows : A short one 

 nearly ventrad of the first dorsal spine, a large one laterad of each of the second and 

 third dorsal spines, and a fourth one a little cephalad of the fourth dorsal spine. 



Scale of the male. — The scale of the male is snowy white, with the larval skin very 

 light yellow. The texture of the scale is quite loose and the carinse prominent; 

 length, 1.25""™ (.05 inch). 



Male. — The adult male is as yet unknown ; many pnpse were collected August 17, 

 1880. Specimens of these mounted in basalm are bright yellow in color, with eyes 

 purplish black. Fully grown male larvse in basalm are yellowish brown. 



Described from four scales of the female, four females, hundreds of scales of the 

 male, and many male pupae and larvse. 



Mr. W. H. Ashmead has kindly allowed me to reprint, with his addi- 

 tions and corrections, the following: 



CATALOGUE OF NORTH AMERICAN CYNIPID^ LIVING ON THE OAK. 



CYNIPID.^:. 



Division I. — Psenid.e, or True Gall-makers. 



BELONOCNEMA, Mayr. 



55. treatae, Mayr. Die Gen. d. Galleubw. Cynip. p. 16. 



AMPHIBOLIPS, Reinhard. 



56. spongifica, O. S. {Cynips) Proc. Ent. Soc. Phil, ii p. 244. 



57. cocciniae, O. S. 1. c. p. 242. 



58. nubilipennis, Harris (Oynips) Ins. Inj. Veg. p. 434 ; Fitch Rep. 2nd, No. 318. 



