COCCIDAE OF OHIO. 67 
Anal orifice very large, removed from margin by about three lengths 
of the median lobes. 
Remarks: Found very abundantly on young Liriodendron 
tulipifera, at Painesville, Lake Co., Ohio, July 21, 1903. This 
species differs from A. osborni, its nearest species, by the jet- 
black exuviae, the very large anal orifice, and the numerous cir- 
eumgenital gland-orifices. 
Aspidiotus rapax (Comstock). 
Fig. 20. 
A. rapax Comst., U. S. Agr. Report of 1880, p. 307. 
Scale of female: Very convex, gray almost white, translucent, 
appearing yellow because of color of insect beneath; the sub-central 
exuviae marked by a brown or black dot and a concentric ring. Ventral 
seale snow-white and usually entire. 
Scale of male: Similar to scale of female, scarcely so convex, 
with exuvia sub-lateral. 
Female: Median lobes only, well developed and _ prominent, 
sharply notched on either side, the mesal notch nearer the apex. 
Second and third lobes are represented by small, pointed projections 
of the margin. A deep incision laterad of the median and second lobes, 
bounded by subequal chitinous processes. Two irregularly toothed or 
branched plates caudad of each incision, with a simple one between 
them and two or three simpie or furcated ones laterad of third lobe. 
On each surface, spines are located at the lateral bases of each lobe; 
the fourth spine at about two-thirds of the distance to the penultimate 
segment. The ventral fourth spine is slightly laterad of the corres- 
ponding dorsal spine. Groups of circumgenital gland-orifices absent. 
Dorsal] pores in two or three irregular rows; the second of about 6; 
the third of about 4. The anal orifice is very large. 
Remarks: This is a cosmopolitan insect in warm climates, 
found upon many hosts; the most important ones being almond, 
quinee, fig, olive, acacia, locust, willow, eucalyptus, Osmanthus 
and other citrus trees. 
ASPIDIOTUS ULMI Johnson. 
Fig. 22. 
A. ulmi Jonns., Bull. lll. Lab. Nat. Hist., Vol. iv, p. 388. 1896. 
Scale of female: Almost round, 1.5—2 mm. in diameter, dirty 
white or tan-colored; the latter owing to the corky covering from the 
- bark often apparent. New exuviae bright orange-yellow, older material 
is usually faded. A well developed, white, ventral scale. 
