442 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



nearly 3 mm. ; legs reddish, except the coxae which are black, and 

 the femora which are brownish; wings hyaline. 

 The gall of this species occurs on Rosa lucida. 



R. lenticularis Bassett. Rose Lentil Gall. 



Female: length 2 mm.; head black, first three joints of the 

 antennae dark reddish brown, the rest dull black, first and second 

 joints globular, third half again as long as the fourth, the latter 

 slightly longer than the succeeding one ; thorax black, mesonotum 

 not shining, parapsidal grooves distinct with only faint lines 

 between, pleurae shining in the middle, scutel finely wrinkled ; 

 legs dark reddish brown ; wings subhyaline, with a faint reddish 

 cloud on and around the radial area, veins distinct, areolet 

 present. Male : with wings more nearly hyaline and without 

 any trace of cloudiness ; nearly as long as the female. 



The galls of this species are lentil-shaped, occur in the 

 parenchyma of the leaves of Rosa lucida, are apparent on both 

 the upper and the under side of the leaf, and are from 2.5 to 4 mm. 

 in diameter horizontally and 2 mm. in diameter vertically. Usually 

 the galls are confluent, irregular in outline, sometimes single, in 

 some cases covering the entire leaf, while in other instances only 

 the right or left lobe is bedecked. 



ibaliid;e. 



Ibalia Latreille. 

 The characters for this genus are the same as those given for 

 the family to which it belongs. 



I. ensiger Norton. 



Female mostly black with reddish abdomen, ovipositor two- 

 thirds the length of the abdomen and concolorous with the same ; 

 legs black and shining, except the apical joints of the tarsi, which 

 are obscurely reddish ; wings hyaline, apices translucent blackish. 



I. maculipennis Haldeman. 



Female: 14 mm. long; mostly yellow; mesothorax and meta- 

 thorax black except two longitudinal bands above and a spot 

 beneath the wings ; scutel yellow ; apices of antennae, bases of 

 coxae, middle of anterior and middle femora and greater part of 

 posterior femora, black, posterior tibiae blackish toward apex; 

 wings yellowish, with the apex and a central spot infuscated. 



New Haven, 8 May, 191 1 (A. B. C), 24 September, 1913 (W. 

 E. B.), 25 May, 8 June, 191 5 (M. P. Zappe) ; Lyme, 4 July, 1911 

 (A. B. C). 



