ASH SCALE-INSECTS. 553 



mealy-white grains at the apex; head, thorax, eyes, antennae, and legs dingy black; 

 wings pale, unmarked. The particular species of ash (Fraxinus) which it inhabits 

 Dr. Bundy has not informed me. 



Since the above was written Professor Bundy has furnished the following item : 

 " Found on F. quadrangulata, Mx. Leaves much twisted and deformed, especially at 

 the end of infested twigs, but no gall proper." 



Winged individuals. — Anterior wings with the third discoidal vein simple, arising 

 from the second vein, a short distance from the base of the latter, running almost 

 directly outward toward the apex of the wing ; second vein also very oblique and 

 arising very close to the first vein ; first vein somewhat dim, subobsolete, slightly 

 curving outward as it approaches the margin of the wing ; fourth vein curves very 

 slightly near the base, the remainder being almost straight. Stigma semi-opaque, 

 elongate-rhomboidal, sides nearly parallel, ends with about the same slope ; length 

 about three times the width. Subcostal vein quite prominent, somewhat distant 

 from the costa, curving slightly inward or backward where the two branch veins 

 arise. Antennte short, reaching but slightly beyond the end of the thorax ; third 

 joint longest, nearly equal to fourth and fifth; fourth slightly shorter than the sixth; 

 sixth with a small spur at the tip. Posterior wings with two discoidal veins which 

 arise from the same point. Color of winged specimen after long immersion in 

 alcohol: head dark, prothorax pale, thoracic lobes dark; abdomen pale dull yellow, 

 with marginal sutures dark in some specimens ; wings transparent, with a slight 

 tinge of milky white; veins very delicate and generally pale. Length of body 

 about .07 inch. 



Wingless specimen.— Yery broadly ovate, length in some scarcely exceeding the 

 widest point ; antennae very short ; eyes quite small ; dark. (Thomas.) 



25. Aspidiotus ancylus Putnam. 



This species is said by Professor Comstock to infest many plants ; 

 he has found it upon the ash, beech, bladder nut, hackberry, linden, 

 maple, oak, osage orange, peach, and water-locust. The following 

 account is taken from Professor Comstock's report as U. S. Entomol- 

 ogist, for 1880 : 



Scale of female. — The scale of the female is usually slightly wider than long, al- 

 though nearly circular, with the exuviae laterad of the center, and covered with a 

 thin layer of excretion. This film is white, but it is easily removed, leaving the 

 brick-red exuviae exposed. That part of the scale immediately surrounding the 

 exuviae is dark gray, almost black ; the margin of the scale is light gray ; the whole 

 scale has a reddish tinge. It measures about 1.4'"'" in length and 1.3""" in width. 

 Ventral scale white and very delicate. 



Female. — The female is pale yellowish or pale orange in color, marked with trans- 

 lucent spots. The outline of the body before oviposition is ovate, but becomes more 

 or less circular after the insect begins to oviposit. The last segment presents the 

 following characters : 



There are four or five groups of spinnerets. The anterior group, when present, 

 varies from a single spinneret to six, but it rarely consists of more than three ; the 

 anterior laterals vary from six to fourteen ; the posterior laterals vary from five to 

 eight. 



Only one pair of lobes present, these are large; each is notched at about the middle 

 of the lateral margin ; occasionally there is a small notch near the end of the lobe on 

 the mesal margin. 



There are two incisions of the margin of the ventral surface on each side of the 

 meson, one just laterad of the lobe, and one laterad of the second spine. The part of 

 the body wall bounding these incisions is conspicuously thickened. 



