270 DAVENPORT ACADEMY OF SCIENCES. 



more distinct beneath than above. I^egs short and stout. Ros- 

 trum short, reaching to the second coxae in older specimens and 

 to the abdomen in the younger ones ; pale brown at base, with 

 the rest pale dusky. Antennae short and stout ; joint i much the 

 stoutest and truncate at tip ; joint 2 somewhat longer, clavate; 

 joint 3 a little longer than the two basal joints combined, faintly 

 curved, its surface rather indistinctly and sparsely annulate, and 

 bearing apparently three minute hairs at tip ; thumb very small. 



Sexual eggs. — Yellow, apparently highly polished, and of 

 the normal form. 



Male and Female. — I,ength of the male about 0.3™™- and of 

 the female 0.4™™-. Surface of body covered with minute points. 

 Color pale ^^ellow ; eyes reddish and more prominent beneath than 

 above. Antennse and legs with a faintly dusky tinge, darkest in 

 the male. Antennae very short ; the two basal joints about 

 equal in length, the first much the stoutest. In the female the 

 second joint appears to be a little longer than the first and slightly 

 clavate ; joint 3 is about as long as the two basal joints com- 

 bined, stoutest at the apical third, with five or six faint annula- 

 tibns, and provided at tip with two or three minute hairs ; the 

 thumb is scarcely noticeable. I^egs stout, longer in the male, 

 Rostrum rudimentary. 



This species was found by me during September in the middle 

 of the woods in the same locality as Ph. salicicola, on the trunks 

 of young trees of Nyssa sylvatica, in cracks and depressions of the 

 bark, though more particularly in the cavities caused by the 

 dropping out of small dead twigs, about five or six feet above the 

 ground. It is difficult to discover and appears to be quite rare. 

 None could be found, after much search, on the trunks of larger 

 trees. 



The types of the new species described in this paper, as well as 

 those described by the late Dr. C. V. Riley, and also co-types of 

 most of the species described by Dr. Asa Fitch, Dr. Henry Shimer, 

 and Mr. Benjamin D. Walsh, are preserved in the collection of 

 the U. S. Department of Agriculture. 



Phylloxera vastatrix Planchon has been purposely omitted from 

 this paper on account of the large amount of literature pertaining 



