374 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Scale of female: Diameter 1.5-2 mm., nearly circular, flat, dirty 

 white or light gray, exuviae central or subcentral, dull orange. 



Female : Median lobes notched on both outer and inner margins 

 near the tips. The number of circumgenital gland-orifices in the 

 four groups are as follows : anterior lateral, 8-9 ; posterior lateral, 



6-7. 



Scale of male : Length 1 mm. Elongated slightly, white, 

 exuviae subcentral, light yellow. 



This is a common scale on a great variety of plants in the green- 

 house. 



New Haven, Dec., 1899, 19 D ec -> 1901 ; 5 May, 1914; Hartford, 18 Apr., 

 1905; Glenbrook, 11 Sept., 1913; Cromwell, 5 Dec., 1913. 



A. juglans-regiae Comstock. English walnut scale. 



Rept. U. S. Dept. Agr., 300, 1880. 



Scale of female: Diameter 2.8-3 mr n., circular, flat, pale grayish 

 brown, exuviae subcentral, reddish brown. 



Female : Median lobes large and well developed, close together, 

 converging, notched on outer margins, near apex, rounded. The 

 five groups of circumgenital gland-orifices are as follows : median, 

 4-7; anterior lateral, 8-15; posterior, 6-10. 



Scale of male: Length 1-1.25 mm., elongated, smaller than 

 female but similar in color ; exuviae at anterior end. 



This species is found on walnut, apple, pear, peach, cherry, 

 apricot, plum, locust and maple. It has been recorded from 

 Massachusetts and probably occurs in Connecticut. 

 A. osborni Newell and Cockerell. 



Rept. la. Acad. Sci., v, 229, 1898. 



Scale of female: Diameter 1-1.25 mm., subovate, dark gray or 

 brown, nearly the same color as the bark of the host; exuviae 

 rather large, dark brown, or when rubbed, yellowish orange. 



Female : Median lobes well developed, long and narrow, rounded 

 apically, notched on outer margin; second and third lobes rudi- 

 mentary ; circumgenital gland-orifices grouped as follows : median, 

 0-2 ; anterior lateral, 5-7 ; posterior lateral, 3-4. 



Scale of male : Same color as female but longer and narrower. 



On white oak, Quercus alba, and hop-hornbeam, Ostrya 

 virginica. 



Greenwich, 23 Sept., 1914. 

 A. ostreaeformis Curtis. Pear tree oyster scale. European fruit 

 scale. 



Gardener's Chronicle, iii, 805, 1843. 



Scale of female: Diameter i-i.5mm., circular, dark gray, 

 lighter near margin, moderately convex ; exuviae large, eccentric, 

 yellow or orange. 



Female: Median lobes short and broad, outer margin notched, 

 apex rounded, less prominent than in ancylus. Median group of 

 gland-orifices, 5-8; anterior lateral, 10-12; posterior lateral, 10-12. 



