CARROLLIA TJEICHn 465 



at least basally, yellow scaled, a large patch of violet scales before the apex of the 

 front side of each femur, fourth joint of hind tarsi white scaled (the fifth is want- 

 ing) ; tarsal claws simple. Wings hyaline, somewhat smoky along the costa, the 

 scales black, with a purplish tinge, those in outer half of wings rather broad, ob- 

 lanceolate. Length about 4 mm. 



Trinidad, West Indies. A female specimen collected by Mr. F. W. Urich, after 

 whom this fine species is named. Type No. 9141, U. S. National Museum. 

 Description of Femaie, Male, and Labva of Casboixia UEiCHn: 



Female. — Proboscis rather long and slender, enlarged towards apex, labellae 

 conically tapered; vestitnre black with a blue and bronzy reflection; setae 

 minute, curved black, those on labellse more prominently outstanding. Palpi 

 slender, short, black, one-fifth as long as proboscis, with some outstanding setae 

 at base. Antennae slender, the joints subequal, rugose, pilose, black, second 

 joint scarcely enlarged but somewhat elongated; tori subspherical, with a cup- 

 shaped apical excavation, pale yellow ; hairs of whorls sparse, moderate, black. 

 Clypeus rounded, convex, black, pruinose. Eyes black. Occiput black, vertex 

 densely clothed with a mass of forked, erect pale-yellow scales extending well 

 down the sides, cheeks and eye-margins clothed with broad, flat, silvery white 

 scales; coarse brown bristles along eye margins, a pair of long ones projecting 

 between the eyes. 



Prothoracic lobes elliptical, remote dorsally, clothed with rather broad erect 

 black scales with a bronzy luster and a few black bristles. Mesonotum blackish 

 brown, with two narrow bare lines on anterior half, vestiture of dense, long, 

 narrow curved scales, blackish brown, with longer, dense, suberect, brighter 

 brown scales on median portion of disk and around ante-scutellar space, making 

 the vestiture look roughened; bristles over roots of wings brown. Scutellum 

 trilobate, blackish, the mid lobe large, clothed with pale brown scales similar 

 to those on mesonotum, each lobe with a group of brown bristles. Postnotum 

 elliptical, brown, nude. Pleurae brown, with a silvery pruinosity on the upper 

 half and bordered below by a broad, oblique, velvet-black band ; coxse yellowish 

 with a green tint, with a row of dark bristles outwardly and some silvery scales. 



Abdomen compressed, truncate at tip, clothed dorsally with black scales with 

 a strong iridescent metallic reflection, sides black without metallic luster; a 

 row of large, lateral, triangular, segmental white spots with a metallic vio- 

 laceous reflection, which do not reach the margins ; venter clothed with yellow- 

 ish-white silvery scales, the tips of the last four segments with narrow, deep 

 black bands of raised scales. 



Wings rather narrow, hyaline; petiole of second marginal cell about one- 

 fourth as long as its cell, that of second posterior cell about equal to its cell ; 

 basal cross- vein distant more than its own length from anterior cross-vein ; scales 

 of veins brown, with a blue reflection on the costa, rather broadly ovate, dense. 

 Halteres white, with black knobs. 



Legs slender; femora black above, with metallic blue reflection laterally, 

 whitish beneath basally, scales roughened towards tip, a violaceous iridescent 

 spot on outer side before apex; knees narrowly silver scaled; tibiae bronzy black 

 with brilliant iridescent luster, scales on posterior tibia somewhat outstanding; 

 tarsi bronzy black, the hind tarsi with a pale shade at base beneath and the 

 fourth joint white on its basal half ; imder surface of front and mid tarsi with a 

 strong bronzy luster. Claw formula, 0.0-0.0-0.0. 



Length : Body about 5 mm. ; wing 4.5 mm. 



Male. — Palpi nearly as long as proboscis, slender, uniform, last joint tapered ; 

 vestiture black, a white ring before middle of long joint, a few short black hairs 

 on ends of the last two joints and tip of long joint. Antennae rather long, 

 plumose ; last two joints long and slender, rugose, pilose, black, the others short, 

 but longer than usual, whitish, with a black ring at insertions of hair-whorls; 

 30 



