384 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.51. 



broad and rounded at the apex. The entire orifice is covered on its 

 upper surface with a membrane, the opening in which is smaller than 

 the orifice itself. Color of case yellowish brown, with the median 

 portions darker brown. Eyespots purpUsh. The case is closely 

 appressed to the leaf and surrounded with a rather narrow glossy 

 wax fringe, in which may be distinguished the pencils of white wax 

 from the thoracic and caudal combs; the marginal area is dark 

 brown and the dorsal disk very dark brown or black. The disk shows 

 a longitudinal keel, and the body segments are quite distinct. 



Adults. — Unknown . 



Described from pupa cases in balsam moimts. Type lot from 

 Kaslo, British Columbia. 



Type.— Cat. No. 19192, U.S.N.M. 



ALEUROPLATUS (ALEUROPLATUS) COCKERELLI (Ihering). 



Plate 50, fig. 2; plate 49, figs. 5-6. 

 Aleurodes cockerelli Ihering, Rev. Mus. Paulista, vol. 2, 1897, p. 393. 



Paratype material of this species in the collection of the Bureau of 

 Entomology is composed of pupa cases only. 



The description given by Hempel ^ and cited under this species by 

 Kirkaldy in his catalogue of the family refers to quite another insect, 

 Dialeurodicus cockerelli Quaintance. 



Pupa case (pi. 50, fig. 2).— Size 1.36 by 1.056 mm. Shape oval, 

 with cephahc portion the narrower. (The figure given by Ihering 

 shows the cephalic and caudal portions equally broad. Our speci- 

 mens, however, are not so shaped.) Dorsum with a distinct rhachis, 

 the segments of the abdomen extending out from it as prominent 

 ridges. Submarginal area with a few small, clear, circular, pore-hke 

 areas. Vasiform orifice (pi. 49, fig. 6) somewhat longer than that 

 shown for the type and with the membrane on the iimer latero-caudal 

 part sometimes thrown into minute folds. Margin with distinct 

 and, for the genus, rather prominent teeth, between wliich minute ones 

 are often situated. Thoracic pores ending on margin in an even 

 comb of usually four closely placed teeth (pi. 49, fig. 5). Color on 

 the leaf brownish black; under the microscope, dark brown. 



In the development of the rhachis cockerelli approaches sculpturatus, 

 but the rhachis is not so well developed as in that species, nor is the 

 pupa case so large or of the same shape. 



Adults. — Unknown . 



Paratype.— Qui. No. 20191, U.S.N.M. 



1 Ann. Mag. Nat. Hist., vol. 8, p. 387. 



