Ko.isc/i. ALEYRODIDS OF CALIFORNIA— BEMIS. 491 



Tliis s|)»'cic.s is not coninion where collecting has })een done by the 

 iiuthor. It was found in April and ]May, 1902, on campus of Leland 

 Stanford Junior University, on the under sides of leaves from Rhdni- 

 nim ealif(}i')ila(, tog'cther with .1. h'idesccnK and xL irellmancf. In Julv, 

 1902, the author collected a number of pupa-cases on an unnamed man- 

 zanita in the Yosemite Valley; in the latter place the species was 

 nuu'h more numerous. 



3. ALEYRODES PRUINOSUS, new species. 

 Plates XXXIIT-XXXIV, li-s. 4(1-55. 



Egg. — Yellow-brown in color; subpyriform. pointed at base, whicli 

 is prolonged into a long stalk; chorion tirni. 



Late emJyvyo. — (^\'ithin the egg'shell.) Color 3'ellow, eyespots red, 

 divided, the smaller of each pair round, more lateral and anterior: tlie 

 larger lobe not so definite in shape. Near the ))asal part of i^^^ there 

 is a broad, irregular, orange-colored mass which extends almost the 

 width of the shell; anteriorly it is divided into two rounded lobes; 

 this mass corresponds to the visceral glands seen in the larva\ Lin- 

 gula distinct, agrees with older specimens. The anterior pair of legs 

 readily made out. 



Larva. — (Stage 1.) Size, O.-l by 0.23 mm.; subelliptical, slightly 

 pointed caudad; color, whitish yellow; lateral fringe about one-third 

 the width of larva, continuous at base but distally divided into irregu- 

 lar plates. Dorsum free from wax, very convex, marginal crenuhi- 

 tions shallow and regularly rounded; lateral margins with seven pairs 

 of long, delicate, equally spaced hairs, Avhich l)egin at cephalic margin 

 and extend about two-thirds of the distance toward the caudal end; 

 the caudal and latero-caudal hairs are ver\' long, and between them is 

 a third pair of short hairs. Vasiform ortice liroadly ovate, nearly as 

 wide as long, lateral margins straight, apex truncate at latero-ceplialic 

 margin; operculum similar in shape, not quite one-half as long as 

 ortice, with a pair of spines on the free, distal end; lingula spatulate, 

 nearly or quite as long as the oritice, usually protruded and doisalh' 

 recurved; dorsum convex and densely covered with minute, blunt 

 spines, or tubes, and with a series of hairs which are much longer 

 than usual on the lateral and caudal margins; near the apex and 

 attached to the ventral surface is a pair of conspicuously ])road and 

 long spines; these are usually sickle-shaped and curved toward each 

 other; on the lateral margins is a pair of spines similar to the sul»- 

 apical ones, while on the apex is a pair of blunt tubes and a pair of 

 long hairs (Plate XXXIII, tigs. 46-47). The abdominal sutures are 

 distinct along the dorsi-meson. the posterior ones retlexed caudad, 

 Eyespots large and l)right red. Legs and anteiuKV functional. 



L.arva. — Size, 0.58 by 0.8,5 nuu.; color a pale dusky l)rown; abdom- 

 inal seo-ments distinct along the central dorsum. Lateral hairs, legs, 



