388 HENRY SIIIMER, M. D. 



joint shortest and thickest, and the third longest. Legs slightly hairy; femora 

 very thick above, slender in the middle, being not lialf the upper diameter, then 

 swelling out and clavate toward the lower end ; feet with one joint, two claws 

 and two digital!, which have clavate ends. 



Mother Ixsect. — Pale greenish-yellow, orange-yellow about the head ; anten- 

 nae, proboscis and legs black; abdomen pointed, very versatile. 



Microscopic view. — A few very short, fine, black hairs scattered over the body ; 

 three spiracles are seen along each side; surrounding the femur, there is an 

 inverted conical or bell-shaped cup, bordered with black, within which the limb 

 has room to work freely, and outwardly a frsenum or skin attaches the side of 

 this cup to the body, its lower margin black and about as large as the diameter 

 of the cup. Proboscis projecting downwards between the fore legs. Eyes black- 

 Tarsi with one joint, two claws, two long globc-endod digituli, and several hair- 

 like spines. Antenn£e 3-jointed, first two joints short and thick, subglobular, 

 the last long and clavate. 



PiTPA. — Pale orange, wing-pads lighter; eyes brown; ocelli red; feet plainly 

 showing two digituli. 



Of the winged imago thousands were observed, each gall containing 

 from thirty to forty specimens. On June 18th, I found no eggs, only 

 a i'ew larvo3 and many pupoe. 



I am rather suspicious that this maybe the Phylloxera cnrijx-glohid! 

 of Walsh ; but he says (^ihid.) that the gall of his species is " sphericil," 

 and also that the size of the insect is " .07 to .08 inch in length ;" and 

 that the abdomen is blackish. But unless described from living speci- 

 mens, the color is of no value, as they all turn black after death. 



G.\LL No. 2. — On the same leaves with the galls described above 

 (No. 1) I found (June 7th) many presenting the following characters : 

 Flattish, opening both above and below, in nipple-like projections, both 

 surrounded by a downy substance, the upper opening being smaller 

 and closer. 



On opening the gall by a vertical cut, I observed a partly broken 

 septum in the plane of the leaf, the border of the partition remaining, 

 but the centre gone. A flat, dense, rim-like border extended around 

 this septum into the parenchyma of the leaf, beyond the gall, so that 

 the margins of the cut gall presented quite an acute angle. The greater 

 part of the gall was above the leaf and its cavity was somewhat like two 

 cones, with their bases together at the septum, the upper being much 

 the larger. I opened one gall in which the inhabitants had perished 

 when it was about one-fourth grown ; in this the partition was com- 

 plete. Diameter i inch; inside diameter .08 inch; distance between 

 the vertical orifices .15 inch. 



Phjlloxera carijse-fob'x^ Fitch {2d. N. Y. Rep. § 166), has a some- 

 what similar gall, but that opens only above, while the one under con- 



