78 CLASSIFICATION OF THE ALEYKODID^. 



equal. These pores, individually, consist of a cylindrical, brownish-colored rim 

 with a central, white, i*od-like structure. On cephalic margin of case is a 

 pair of setae and a pair on the caudo-lateral region, a seta on each side. There 

 is a pair of small, tubercled set.ne just witliin caudal margin. Around the mar- 

 gin, just within the submarginal series of papillse, is a row of small tubercled 

 setiC, usually from 24 to 28 in all. 



A'asiform orifice elongate-cordate; about three-fourths as broad as long; 

 cephalic margin straight, caudal end bluntly rounded. Operculum subolliptical, 

 cephalic margin straight, about one-third as long as oriflco. Lingula usual, 

 broad, extending quite to caudal end of orifice, bearing two pairs of set;e dis- 

 tally. On ventral surface, rudimentary feet and antennae quile distinct. 



Adult $. — Length, about 0.S6 mm.; fore-wing. 1.1 by 0.52 mm.; length of 

 hind tarsus, 0.21 mm. ; length of hind tibia, 0.38 mm. ; length of hind femur, 0.20 

 mm. ; color, yellowish white, with dorsum of thorax brownish. Eyes reddish, 

 undivided, though with a pronounced constriction. Joint 1 of antenna) short, 

 not one-half the length of second. Joint 2, narrow at base, truncate at distal 

 end, widest centrally. Joint 3 long, longer than remaining joints together, 

 distal joint ending in an attenuated process, bearing a terminal seta. Anterior 

 tarsus about three-fourths length of posterior. Distal tai*sal joint of first pair 

 legs two-thirds length of distal joint of mentum. Wings slightly clouded around 

 margin and with a very dilute oblique transverse band centrally ; at fork of 

 distal branch of \ein is a pronounced spot of brownish-black coloration, other- 

 wise wings without spots. Margins of wings and the veins somewhat yellowish. 

 Genitalia quite short for this genus; valves short and stout. 



Adult 9 ■ — Unknown. 



This species approaches in some particulars quite close to Cockerell's 

 iridescens, but it is much smaller, and the pupa-case differs in several particu- 

 lars. It is quite similar also to Shimer's asarumis. His description is so 

 meager that it will hardly be possible to locate his species unless, peradventure, 

 the type has been preserved. 



Specimens received by the Division of Entomology at Washington, Ja.puary 

 28, 1889, on "Guayaba," from A. Busck, Bayamon, Puerto Rico. Mr. Pergande 

 remarks that quite a large mimber of the insects (pupae?) had been killed by a 

 very curious fungus. Div. Ent. No. 8422. Pupa-case described from numerous 

 specimens; adult $ from two specimens. 



Type.—^o. 14769, U. S. National Museum. 



Aleurodicus lacerdae (Signoret). 



Aleyrodes lacerdce Signoret, Bui. Soc. Ent. France (6) vol. 8, p. Ixiii (1883). 



This species, from the preliminary description given by Signoret, 

 appears to be an Aleurodicus. It is impossible, however, from his 

 remarks to place it definitely. Cotypes arc bupposed to exist in this 

 country, but so far we have been unable to locate them. We there- 

 fore place the species here and quote his description. 



ORIGINAL DESCRIPTION. 



J'ai I'honneur, par I'entreraise de notre coU&gue M. L. Fairmaire, de faire 

 passer sous les yeux de la Soci6t6 des feuilles de VAnona sylvatica couvertes 

 d'une secretion d'aspect cotonneux, ressemblant tl de Tamiante et qui m'oni 

 6t6 envoyees par M. Antonio de Lacerda. Cette s6cr4tion abundante est due a 



