No.l3f.2. ALEYL'ODinS OF ('MJ F( tUMA—BKMJS. 497 



II. ALEYRODES CORONATUS ( Quaintance. ) 



Plate XXVIII, fig. 9. 



For further description see reference. Only those stages not 

 inchided h}- Quaintance, in his paper already referred to, or variations 

 from his description, will be given here. 



Z^r/'W.— (Just from egg, April 19, 1901.) Size, 0.3.S hy (». 15 mm.; 

 elliptical; semitransparent white; neither dorsal nor lateral secretion; 

 dorsum convex and with a distinct noncrenulated, marginal rim, bear- 

 ing from seven to nine pairs of delicate, lateral hairs, which extend 

 from the latero-cephalic margin about one-half the distance to the 

 caudal end; the usual caudal and latero-caudal hairs are present and 

 are relatively long, and there is a pair of shorter ones at the vasiform 

 orifice. Abdominal sutures distinct to the marginal rim. Vasiform 

 orifice prominent, subcircular; operculum short, lingula obscured by 

 it. ?2ye-spots large, single, ])i-lght red. Legs and antenna? functional, 

 the former with digitule-like hairs on tarsi. 



As the larvii! grow older they become Hatter, except along the dorsi- 

 meson. There is much variation in the lateral secretion, which is as 

 great among larva' of the same stage as in dili'erent stages; this fringe 

 may be entirely wanting, some specimens have onl}^ a narrow band of 

 solid wax closely appressed to the margin, others a narrow fringe of 

 separate, glassy rods set far apart, while still others have a fringe one- 

 half the width of dorsum, made up of separate rods of transparent, 

 white wax, which taper to a point and are twisted, or even coiled 

 upon themselves, in various directions. 



P>q>a-case. — Size variable, 0.9 b}- O.OT mm. to 1.1 by 0.9 nun.: with 

 a few exceptions these cases are surrounded hy a broad sloping ring 

 of gelatinous substance; this secretion melts when heated, but rehard- 

 ens as soon as it begins to cool and is difficult to remove; x^dol, or 

 absolute alcohol, does not entirely dissolve it unless the cases are cov- 

 ered for some time; the dorsal wax can be brushed off, and is quickly 

 melted in hot water or weak alcohol. There\ are three pencils of 

 opaque, white wax lying upon the gelatinous mass and extending to 

 its distal margin. One of these is from the median liiu; of the caudal 

 margin, the other two are from the meso-thorax and extend almost .at 

 right angles from the case; these pencils are very conspicuous, and 

 have l)een found on every perfect s})ecimen examined. On the dorsum 

 of specimens which have ])een partially cleared in caustic i)otash then' 

 are many pores which var^' in size with the amount of clearing. 

 Around the case is a single, equally spaced submarginal row; mesad 

 of this row there are scattered, single, larger ones; on the cephalic 

 region there is a transverse row of eight pores; caudad of these is a 

 pair, one pore on each side of the dorsi-meson: on the meta-thorax 



