June, 1902.] New Aspidiotus from Pinus Sylvestris. 



28' 



After 153 add : Calyculina truncata Linsley. Pools and 

 ditches ; common. It is distinct from C. partumeia and securis. 



After 163 add : Pisidium trapezoideum Sterki. Spring brook- 

 let in Stone Creek Valley and ditches. The .species is known 

 from Pennsylvania to North Carolina and Michigan. 



In the printed list there is a large number of typographical 

 errors. A few of them may be corrected here : 



No. 28 should be curvidens ; 44, exiguus ; 70, bicarinatus ; 

 98, Pomatiopsis : 100, Pleurocera ; loi, lithasioides ; 108, subo- 

 vatus : 117, verrucosus; 145, hermaphroditic; 157, cruciatum. 



A NEW ASPIDIOTUS FROM PINUS SYLVESTRIS. 



T. D. A. COCKERELI.. 



Aspidiotus {Diaspidiohis) glandidiferiis n. sp. Female scale 

 larare, 2 mm. diameter, slightlv convex, blackish fthe color of 

 the bark), with large subcentral to sublateral orange-ferruginous 

 or almost vermillion exuviae, readily exposed by rubbing. Re- 

 moved from the bark, the scale leaves a conspicuous white patch. 

 Male scale oval, broad, with covered exuviae and a white dot and 

 ring. 



Female, broad oval, with a deep constriction between head and thorax; 

 the thoracic segments also strongl_v marked by lateral constrictions. Color 

 bright orancre ; candal margin stained with dark red brown. Anal orifice 

 extremely small, level «-itli second dorsal gland of first row. Five groups of 

 circumgenital glands ; median 4, anterior laterals 16 to 17, posterior laterals 

 7 to 8, Dorsal pores very numerous, in four series; the first (below first 

 interlobular incision) of three in a row ; the second of 17, and then altera 

 short break, 9 more ; the third of over 30 ; the fourth (in an irregular line 



commencing near the 



margin ) of about 11. 

 Median lobes very large 

 but broad and low, hardly 

 at all produced ; second 

 lobes similar but smaller 

 and more or less serrulate 

 on the margin; third lobes 

 represented by a small 

 angular prominence ; 

 plates spine-like, the 

 larger one of the first in- 

 terlobular interval slightly branched ; spines quite large, chiti- 

 nous thickenings of the first interlobular interval rather short 



and thick, straight, subequal, but the inner the larger. 



Habitat : Abundant on small branches of Piiius sylvestris on the campus 



of the Ohio State University, Columbus, O., collected by Mr. J. G. Sanders. 



On the leaves of the same tree are some CInonaspis pinifoliae Fitch. 



o 



Dorsal view, posterior end ot abdomen of 

 A. glanduliferus. 



