NO. 2150. SUBFAMILY ALEYRODINAE—QVAINTANCE & BAKER. 353 



spines forming two longitudinal rows. Of these the most caudal 

 and the most cephalic pairs are longer than the others. Cephalad 

 of the vasiform orifice there is a pair of small setae and on the caudal 

 margin of the case a pair of rather long hair-like bristles are situ- 

 ated. The spines forming the submarginal ring (fig. 9) are fimbriate 

 at their distal extremities. The margin of the case (fig. 10) is den- 

 tate, the teeth being rather evenly rounded and the interspaces acute. 

 The teeth are rather small, a space of 0.1 mm. being occupied by 

 about 26 teeth (fig. 10). Just within the margin all around there is 

 a row of minute tubercled setae. The vasiform orifice (fig. 11) is sub- 

 circular in outline, with the lateral and caudal margins armed with a 

 number of folds. The operculum is very similar in shape, but tends 

 more to triangular. It almost entirely obscures the lingula, but as 

 the operculum is somewhat transparent this may be seen below it. 

 On the leaf the cases are black with almost no secretion of any kind, 

 though a very small quantity of wax is sometimes seen about the 

 margin. 



The host of this species is unknown. It was found by Kuwana 

 among Coccidae from Formosa in 1909. 



Adult.— \J\\^T\ own . 



Paraty pes. —Csii. No. 19105, U.S.N.M. Specimens in balsam 

 mounts and on foliage. 



ALEUROCANTHUS T-SIGNATi;S (Maskell). 



Plate 39, figs. 1-9. 

 Aleurodes T-signata Maskell, Trans. N. Zeal. Inst., vol. 28, 1896, p. 443. 



Egg. — No eggs of this species are present for study, excepting those 

 found within the abdomen of the one adult female comprising the 

 type. These are 0.23 mm. by 0.12 mm. No marking is observable 

 on the surface, but this may be developed later. The eggs are oval 

 tending to crescent shape, with the short stalk situated some distance 

 from the larger end. 



Early larva (fig. 5). — Length 0.352 mm.; width 0.24 mm.; color 

 light brown with shading of a darker color; thorax armed with 

 three pairs of rather stout, short spines and one pair of setae on the 

 median cephalic dorsal area. Abdomen with four short, stout spines 

 on each side of the subdorsal area. Vasiform orifice somewhat 

 rounded and almost entirely filled with the operculum; margin 

 minutely crenulate and armed with a pair of setae on the caudal 

 extremity; eye spots wine colored. 



Late larva (fig. 6). — Length 0.624 mm.; width 0.44S mm. Color 



brown, considerably darker than the early larva. Spines arranged 



as on the figure, 10 on the thorax and 8 pairs on the subdorsal 



area of the abdomen. Vasiform orifice similar to that of the earlier 



36399°— Proc.N.M.vol.51— 16 23 



