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



Scale of male: Length .75mm., white, tricarinate, the central 

 carina strongest, exuviae pale yellow. 



Recorded from New York and Massachusetts, on juniper and 

 arbor vitae. 



Danbury, 4 Aug., 1917, on Juniperus virginiana. 

 D. echinocacti Bouche var. cacti Comstock. calyptroides. Cactus 

 scale. (PI. XV, i.) 



Second Rept. Dept. Ent., Cornell Univ., 91, 1883. 



Scale of female: Diameter i. 5-1. 7 mm., white or Hght gray, 

 nearly circular, exuviae dark brown, nearly central. 



Female: Median lobes small with margins wholly entire, 

 rounded, slightly diverging. Median group of circumgenital 

 gland-orifices, 6-13 ; anterior lateral, 16-22; posterior lateral, 12-18. 



Scale of male : White, unicarinate, exuviae yellowish to 

 brownish. 



On plants of the family Cactaceae in greenhouses. 



West Hartford, 4 Jan., 1916. 

 D. zamiae Morgan. 



Ent. Mon. Mag., xxvi, 44, 1890. 



Scale of female: Diameter 1.5-2 mm., circular or approximately 

 so, strongly convex, whitish wax-like. Exuviae subcentral, 

 yellowish. 



Female: Median lobes widely separated, divergent, finely and 

 widely serrate. May be distinguished from other closely related 

 species by the large bifurcated plates. There are no groups of 

 circumgenital gland-orifices. 



Male unknown. 



On Zamia and Cycas revoluta in greenhouses. Recorded from 

 New York and Massachusetts and will probably be found in 

 Connecticut. 



Epidiaspis Cockerell. 



E. piricola (Del Guercio). Diaspis piricola. Diaspis ostreae- 

 formis. Aspidiotus piricola. Italian pear scale. 



II Natur. Sicil, 142, 1894. 



Scale of female: Diameter 1.5mm., circular, light gray, flat- 

 tened, exuviae covered by a film of secretion and inconspicuous, 

 but when film is rubbed off it is shiny and orange-brown in color. 



Female: Median lobes orange-brown (other lobes colorless) 

 large and prominent, rounded. Median group of circumgenital 

 gland-orifices, 8; anterior lateral, 13; posterior lateral, 8. 



On pear and plum. Found under edges of rough bark on pear 

 twig. 



New London, 15 March, 1902. 



I 



