2l6 DAVENPORT ACADEMY OF SCIENCES. 



Head and prothorax rugose, the latter but finely so. Surface of 

 body covered quite densely with minute, somewhat conical, gran- 

 ules. Antennae rather slender and quite peculiar ; apparently 

 4-jointed. Joint i about as long as wide or but slightly longer, 

 truncate at tip and faintly scaly ; joint 2 more slender, distinctly 

 longer than wide, a trifle thinnest at base, rounded at apex and 

 quite coarsely scaly; joint 3 appears to be composed of two joints, 

 the basal section abruptly truncated just above the lower sensor- 

 ium, and tapering gradually to the base, coarsely scaly and divided 

 by 6-8 quite distinct annulations ; the terminal section is about 

 two-thirds the length of the whole joint, its sensorial membrane 

 much elongated and about one-half the length of the entire joint ; 

 its diameter quite uniform, though the part below the sensorium 

 is somewhat thinner and divided by five or more coarse and some- 

 what scaly annulations ; the remainder of the joint is coarsely 

 scaly, with two or three short annulations at the apex, resembling 

 minute joints. 



This antennal structure comes quite near to that of Ph. pida, 

 the third joint of the antennae of which is more or less distinctly 

 divided into two sections. 



Sexual individuals, d ? . — I<ength about 0.4"""-, the female 

 being somewhat the larger. Color orange. Eyes blackish. 

 Antennas and legs pale dusky. Surface of body quite smooth, 

 apparently without granulations, and provided with four rows of 

 rather stout, capitate hairs, which are somewhat longer and 

 stouter in the females. Antennae stout, the ihird joint longer 

 than the tibiae, clavate, with 10-12 more or less well-defined 

 annulations. From the apical fourth of the third joint rises a 

 long, stout, capitate bristle ; two short, fine hairs at the tip, and 

 . another a little lower down on inner side. Legs very stout, more 

 so than usual. Rostrum rudimentary, not fitted for sucking. 



Group II. 



Galls more or less fleshy, not transparent, usually more protuberant beneath 

 than above; conical, globular, or pedunculate ; opening always beneath. 



13. Large; convex on both sides, more prominent beneath; circum- 

 ference above button-like, with a more or less sharply defined edge; 

 either above or sunken beneath the surface of the leaf ; nipple short, 

 surrounded by short bracts. Opening round. ..Ph. rimosalis n. sp. 



