514 FROCEEDIXG^ OF THE NATJOXAL MUSEUM. vol. xxvn. 



ish; legs and antenna3 white. Within the abdomen are two large, 

 yellow glands. Eyes large, slighth' constricted; color, black, reddish 

 at the edges. Attenn^, as in A. pruinosus. Genitalia, ordinary. 



The larvae vary much in the amount and arrangement of the dorsal 

 secretion; some are entirely covered with the matted wax, others have 

 but a scant, fragmentary secretion, while still others are surrounded 

 by a mass which rises almost perpendicularly above the dorsum, and 

 then bends downward and outward, forming a continuous ring at 

 margin of case, but distallj" separated into irregular plates. 



Ootypes.—^o. T093, U.S.N.M. 



Collected b}" the writer on King's Mountain, on Arhtdtts nienziesii 

 onl}^ during May, June, and July, 1901. 



32. ALEYRODES PYROL-<E Gillette and Baker. 



Aleyrodes pt/roLr Gillette and Bakkk, Prelim. Rep. Heuiip. Colo., p. 125. (Colo. 

 Agri. Esp. Sta., Bui. 81, Tech. Ser.). 



On Pyrola 7X>tundifolia, Fourmile Hill, S miles south of Steamboat 

 Springs, Colorado. 



33. ALEYRODES AMNICOLA, new species. 

 Plate XXVII, figs. 4-4a. 



l^gg. — Size, 0.21 b}" o.l nnn. ; oval; yellow; unmarked; pedicel at 

 center of base. 



Larva (fig. -1). — Size, 0.3 hy 0.1 mm. ; elliptical; color glistening white 

 to pale 3"ellow; there is a lateral fringe which varies greatly, many spec- 

 imens have none, while others have a long fringe continuous at base 

 and separated distally into irregular plates; some have granules of wax 

 upon the dorsum, but as the leaf is also coated with similar wax it may 

 be extraneous matter. Dorsum convex, lateral margins with thirteen 

 rather long, delicate hairs set in tubercled bases; the third cephalic 

 pair are much longer than the others; the caudal and latero-caudal 

 hairs are present, longer and stouter than the lateral ones and inserted 

 in conspicuous, conical bases. Abdominal segments distinct to margin 

 and reliexed caudad. Vasiform oritice as in pupa case, the lingula 

 sometimes longer than orifice. 



Larva {^g. la). — Size, 0.73 by 0.5 mm.; broadly elliptical; there is no 

 lateral secretion, but the dorsum ])ears an irregular, interrupted series 

 of long, tapering, glassy rods; dorsum very convex and with minute 

 depressions forming somewhat irregular striations to the central 

 region; abdominal sutures distinct along dorsi-meson; crenulations of 

 margin regular, rounded, and shallow, the reentrant angles acute; cau- 

 dal and lateral hairs as in smaller larva. 



Fapa-caxie. — Size, 1.3 by 0.9 mm. to 1.4 by 1.03 mm. ; broadly ellip- 

 tical, cephalic margin truncate, the caudal margin slightly emarginate 

 at furrow; neither lateral nor dorsal secretion, but when the case is 



