WM. G. DIETZ, M.D. 11 



ZEXODOCHIUM Wish.. 



Type. — Monopetali Wish. 



Agrees with Blastobasis in venation, and from which it dif- 

 fers by the conchyloidal shield of close set scales, replacing 

 the pecten of the basal joint of the antennae. Lord Walsing- 

 ham describes the palpi "middle joint densely clothed." 

 While this cannot be said of the two species which I refer 

 here, I consider the character too vague to be of generic 

 value. 



1. Z. citricolella Ch. (Plate I, figs. 7, la.)— Head white, thinly 

 speckled with pale fawn-colored scales ; face smooth, vertex somewhat 

 rough-scaled, Antennae white, tinged with gray, finely denticulate 

 beneath, basal joint with a few scattered fawn-colored scales; pecten 

 replaced by a flattened, curved tuft of white scales. Labial palpi 

 long, not very slender, white, thickly sprinkled, especially externallv, 

 with brownish scales, third joint nearly as broad at base than the 

 apex of the second joint and about two-thirds the length of the latter 

 {<?). Forewings moderately wide ; white, suffused with dark fuscous 

 and densely sprinkled with brown and fawn-colored scales ; markings 

 dark fuscous, in longitudinal lines or patches, somewhat as follows : 

 A subcostal streak for about two-fifths from the base, a line above 

 the fold of equal extent, a heavy, irregular streak in the fold from 

 near the base to about the middle where it almost joins a dark ir- 

 regular spot in the fold ; a short line near the base and within the 

 dorsal margin ; above the plical spot and about the middle of the 

 wing is another less distinct spot, and above this a dark line parallel 

 to the costa and ending above the two well marked spots at end of 

 cell, two short dashes in dorsal half of wing, the outer one ending 

 immediately below the lower spot at end of cell, several short dashes 

 in apical part of wing, between these latter are a number of short, 

 white, longitudinal lines. Cilia whitish, sprinkled with pale brown 

 scales, forming irregular lines. Hindwings a trifle under one, pale 

 yellowish-gray, shining, thinly sprinkled with fuscous externally ; cilia 

 scarcely over 1, yellowish-gray, paler at base. Thorax whitish, thickly 

 overlaid with brown, patagia more thinly sprinkled. Abdomen silvery 

 gray above, anal bush concolorous, underside white. Legs white, 

 slightly dusted with brown ; hind tibia very coarsely rough haired. 

 Expanse 12.0-19.0 mm., 0.48-0.76 inch. 



Hab. — Florida, Texas. Bred from dry orange infected 

 with Arceocertis tascieulahis. 



Type in Nat. Mus. Coll. A c? 1 specimen from the same 

 source is before me, it bears label " 1101 P. Tinea from 



TRANS. AM. ENT. SOC, XXXVI. FEBRUARY, 1910. 



