78 CLASSIFICATION OF THE ALEYEODID^. 
equal. These pores, individually, consist of a cylindrical, brownish-colored rim 
with a central, white, rod-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 setae just within caudal margin. Around the mar- 
gin, just within the submarginal series of papillae, is a row 6f small tubercled 
setae, usually from 24 to 28 in all. 
Vasiform orifice elongate-cordate; about three-fourths as broad as long; 
cephalic margin straight, caudal end bluntly rounded. Operculum subelliptical, 
cephalic margin straight, about one-third as long as orifice. Lingula usual, 
broad, extending quite to caudal end of orifice, bearing two pairs of setae dis- 
tally. On ventral surface, rudimentary feet and antennae quite distinct. 
Adult $ . — Length, about 0.S6 mm. ; fore-wing, 1.1 by O.o2 mm. ; length of 
hind tarsus, 0.21 mm. ; length of hind tibia, 0.38 mm. ; length of hind femur, 0.26 
mm. ; color, yellowish white, with dorsum of thorax brownish. Eyes reddish, 
undivided, though with a pronounced constriction. Joint 1 of antennae 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 tarsal joint of first pair 
legs two-thirds length of distal joint of mentuin. Wings slightly clouded around 
margin and with a very dilute oblique transverse band centrally; at fork of 
distal branch of vein 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 $. — 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, January 
28, 1889, on "Guayaba," from A. Busck, Bayamon, Puerto Rico. Mr. Pergande 
remarks that quite a large number 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.—Xo. 14769, U. S. National Museum. 
Aleurodicus lacerdae (Signoret). 
Aleyrodcs lacerdw Signoret, Bui. Soc. Ent. France (6) vol. 8, p. lxiii (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 .supposed 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 I)KS( h i rn< ) n . 
J'ai l'honneur, par l'entremiso de QOtre ooilegtie M. I.. Fairmaire, de faire 
passer sous les yeux de la Boctetti dee fVuillcs de L'AfNNM st/lratica couvertes 
d'ane s<vn''ti<m d'aeped ootonneox, rwouiblanl fi de I'amiante < i t qui m'oul 
ete envoyees par M. Antonio de Lacerda. Cette secretion abundante est due k 
