636 REVISTA CHILKNA DK HISTOUIA NATURAL 



Xifpe.—Cai. N.o 23074, U. S. National Museura. 

 Gemís Aleui'oti'aclieliis Quaintance and Baker 



Pupa case sraall to médium in size, elliptic in outli- 

 ne, the cephalic end often somewhat pointed; margin of 

 case usually Avith an apparent double rowofteeth; sub- 

 marginal área may or may not be separated from dorsal 

 disc. Dorsum witliout pores or papillae; body segments 

 usually very distiuct. In typinal forms tliere is along each 

 side of dorsum a prominent fold. Along median line of 

 dorsum is a tracheal like ridge terminatiug cephalad in 

 typical forms, in an arrow-shaped fígure, and candad in 

 an ovate or polygonal figure, surronnding the orífice. Tra- 

 cheal folds not discernible; Avax secretion usually present, 

 frequently copious, as a fringe from marginal Avax tubes, 

 and as a covering of the dorsum. Vasiform orifico small 

 to médium in size, sub-cordate; operculum usually similar 

 in outline, obscuring the linguhi. 



Ti/pe- Aleyrodes tracJieifer Quaintance. 



Aleurotrachelus parvus (Hempel). 



Aleurotrachelus parvus Kemyel, Psvche, Yol. 8, 1899, 

 p. 395. 



Alenrotraclielus parvus, Quaintance and Baker, Tech 

 Ser. 27, Bur. Ent. U. S. Dept. of Agriculture, 1914, p. 

 103. 



No speciments of this species are available for study. 

 Quaintance and Baker placed it in Aleurotrachelus becau- 

 se of Hempel's descriptiou of the double row of marginal 

 teeth and the longitudinal ridge on the dorsum. Hempel 

 describes it as sraall, flat, black in color, and oval in 

 shape, usually enveloped in a mass of white, felt-like 

 hairy secretion. ]\[arginal edge thickened, with a double 

 row of crenulations. Wings transparent. Habitat, under 

 side of leaves of Maytenus sp., Sao Paulo, Brazil. 



Gemís Aleyrodes Latreille 



Pupa case small to médium in size, elliptic in outli- 

 ne; color usually yellowish or brownish; margin of case 



