No.i3(i2. ALFARODIDS OF CALIFORNIA— B EM IS. 499 



13. ALEYRODES FILICIUM Goldi. 



Ali'i/rodix Jillciuiii Goldi, Mittlieil, Schweitz. P^ntoin. GesellHcli., VII (IS.Sti), 

 p. 247; iMit. Mo. Mug., 1891, p. 44. 



Oil Axji/cji'ioii c>()}r<(tuiii and other Brazilian ferns, in the ))()tanic 

 oarden at Kio de Janeiro; also on (>le((n<li'(i. ((rfHnlafa'Awd J*!^-!-^ qndd- 

 rUnii'tin in the fern house, Kew Gardens. 



14. ALEYRODES KELLOGGI, new species. 

 • Plate XXIX, figs. 13-1 H. 



E<j(i. — Size, 0.2 hy 0.01> mm.; yellowish, unmarked, pedicel shoit, 

 at one side of base. The empty shells are dark brown and much 

 crumpled. 



Larva. — (Stage 1.) Size, 0.3 by 0.1 mm.; elliptical; margin with 

 a narrow liand of white wax; color, semitransparent white. Dorsum 

 free from secretion, conyex, lateral margins with pairs of shoi't hairs 

 set in conical bases; besides these, there are the usual caudal and 

 latero-caudal hairs, which are conspicuously long. Abdominal seg- 

 ments distinct. Vasiform orifice as in pupa-case. Antenntv and legs 

 functional, the latter with long, digitule-like hairs. 



Larva. — (Stage 2.) Size, O.-i by 0.25 mm.; elliptical; the dorsal 

 secretion a submarginal, Hat fringe, continuous at base but distally 

 separated into irregular plates. Abdominal segments distinct, rounded 

 along the dorsi-meson into a keel, crenulations of margin broad and 

 shallow. Vasiform oritice subcordate; operculum short, subsemi- 

 elliptical; dorsum setose; anterior margin straight, distal end with 

 two conspicuous hairs on the lateral angles; lingula short, projecting 

 lieyond the operculum, strap-shaped, distal part coyered with hairs. 

 Reduced legs and antennae evident. Eye-spots small and dark red. 



Piipa-caM'. — Size, 1.3 by 0.87 mm.; broadly elliptical, narrowed 

 cephalad; color, pale 3"ellow; the central region darker. There is no 

 lateral fringe; the case is raised some distance from the leaf upon a 

 vertical, yentral fringe of coalesced, white wax rods and covered 1)y 

 the dorsal secretion with the exception of the yasiform oritice; this secre- 

 tion consists of a central shell of thick, porous, pearly white wax, and a 

 submarginal series of broad, opaifue, white ribbons, which are irregular 

 in width and raised into a high-arching, curved fringe, which entirely 

 covers the margin of the case and, in many specimens, is curled under 

 itself, making a roll. The ribbons are made up of from two to four 

 thin sheets of wax closely appressed to each other; the ditl'erent layers 

 in each ri])bon may come from separate sets of wax-secreting tubes; 

 this seems extrcMuely pro])able, as the yellow color of the case shows 

 at th(> liase between the sheets. The wax around th(> vasiform oritice 

 is raised al)ove the dorsal shell and forms a concave rim which meets 

 the caudal ril)bon and incloses the oritice. In nearly all tiie s|)ccimens 



