COCCIDAE OF OHIO. 57 



D. Median lobes converging; inner cliitinous processes of 



first incision, bent or club-shaped forbesi 



DD. Median lobes about parallel; processes subequal. 



B. Circumgenital gland-orifices absent perniciosus 



BE. Circumgenital gland-orifices present. 



F. Ciiitinous processes ol; first incisions long ostreaeformis 



CC. Median lobes short and broad, almost truncate, very 

 close, and with second and third lobes forming a 

 semi-circle; dorsal pores very numerous in four 

 distinct rows glanduliferus 



CCC. Median lobes short and broad, scarcely notched on outer 

 margin; lobes not forming a semi-circle; dorsal pores 

 less numerous Juglans-regiae 



AA. Plates complex, conspicuous; a toothed semi-circular 

 plate between second and third lobes; second lobes 

 often longer than median comstocki 



ASPIDIOTUS ANCYLUS Putnam. 

 Fig. .5. 



Dlaspis ancylus Putnam, Trans. la. Hort. Soc. xii, p. 381 (1877). 



AxpicHofus ancylus Putnam, Proc. Davenport Acad. Nat. Sci., ii, 

 p. 346 (1879). 



As20idiotus ancylus Comst., Rep. U. S. Dep. Ag., 1880, p. 292 (1881). 



Scale of female: Circular, 1 — 1.5 mm. diam. Brick-red exuviae 

 covered by gray film of excretion; remainder of scale dark gray, or 

 almost black, except light gray margin. A very delicate, white ventral 

 scale is present. Show a tendency to gather in clusters two or 

 three deep. 



Scale of male: Of same color as female scale; is much smaller 

 and elongated. Length, 1 — 1.5 mm.; width, .5 — .6 mm. 



Female: Only the median pair of lobes developed, somewhat 

 separated v/ith the mesal margins parallel; notched on lateral margin 

 about one-third of distance from subtruncate apex, and frequently 

 notched near apex on the mesal margin. Second lobes rudimentary, 

 truncate, not extending beyond margin of segment. First interlobular 

 incision rather wide and shallow, with variable, chitinous processes, 

 usually straight, the inner the larger. Second interlobular incision 

 similar; inner chitinous processes usually larger than the outer. 

 Sometimes a very small incision laterad of second incision. Small chit- 

 inous process at inner base of each median lobe. There are two plates, 

 usually furcated, caudad of each incision and occasionally a third 

 plate. The spines on the ventral surface are shorter than the dorsal 

 spines, and situated at the base of the lateral margin of the median 

 lobes and the rudimentary second and third lobes. The spines of the 

 dorsal surface are slightly mesad of the corresponding ventral ones; 

 the fourth being about two-thirds of the distance from the median 



