618 REVISTA CHILENA DE HISTORIA NATURAL 



the right or left side, but more often on the riglit. The 

 achilts vaiy greatly from otliers iu closely related genera 

 iii having the frons extended and armed with tubercles, 

 and in a widely rounded forewing, marked with groups of 

 small dots. On the caudal abdominal segment of the adult 

 male is found a structure which has not been observed 

 before in the faraily, a paired orgau arising from the seg- 

 ment cephalads of the genital segment. It is a long curved 

 process extending candad well beyoud the end of the anal 

 segment. 



Ti/pe.—Cíü X.^ 19592 U. S. National Mnsenm. 



Genus Leonardius (^uaintance & Baker 



Forewing with radios, radial sector, and media form- 

 ing the veins; cubitus present iu freshly emerged wing 

 and traces of it sometimes present later; form of wings 

 rounded, color generally mottled. Vértex produced, some- 

 what coneshaj^ed. Antennae of seven segments of which 

 the tliird is the longest. Paronychium a narrow spined 

 process; pupa case with a series of agglomerate pores, 

 some of which (the two anterior abdominal pairs) take on 

 the nature of compound pores. Lingula of pupa case coni- 

 cal, included, setose, and arraed with four spines. 



l])/pe. — Aleurodlcus ¡aliUlei Leonardi. 



Leonardius lahillei (Leonardi) (Lám. LXIX, M-0). 



Aleurodlcus lahillei Leonardi, Bollettiuo del Labora- 

 torio di Zoología genérale e agraria della R. Scuola supe- 

 riore d'Agricoltura iu Portici, Vol. 4, p. 316 (1910). 



Leonardiíis lahillei Quaintance and Baker, U.S. Dept. 

 of Agriculture, Tech. Ser. 27, Pt. 1, 1913, p. 83. 



The original descriptiou with a translatiou is given 

 by Quaintance and Baker. The habitat of the species is 

 given as Argentina, upon a plant not classifíed. 



Genus Aleiirodicuí«! Douglas 



Forms iu this genus have radius, radial sector, and 

 the media present in the forewing, with sometimes an in- 



