488 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



cephalad to its arrow-shaped anterior end; between the keel and the 

 marginal rim there is a depressed, flat space. Upon the dorsum there 

 are rows of tuheroles, or cylindrical papilla?, which correspond in 

 position with the stellate whorls of wax. In the outer rows there are 

 thirteen pairs; on the abdominal keel there are six pairs, ver}^ close 

 together; caudo-laterad of these is another pair; laterad of the first 

 pair of tubercles on the anterior abdominal segment is a pair; on the 

 metathorax is a pair; on the prothorax near the median line is a pair, 

 and more laterad, near the cephalic suture is another pair; on the 

 cephalic region there are two pairs, the caudal pair more mesad; 

 between the vasiform orifice and the caudal margin of case there is a 

 pair, the inner borders of which form the lateral margins of the fur- 

 row. Lateral wax tubes, deflexed to meet the ventral disc, form a 

 plainly demarked marginal rim: a second, and superimposed, row of 

 large wax tubes seem to show in specimens which are partially cleared 

 in Labarraque; the dorsal, submarginal fringe comes from a row of 

 pores mesad of the latter tubes. Crenulations of the marginal rim, 

 regular, minute, and round, with acute reentrant angles; from these 

 thickenings extend mesad, producing a rather irregularly marked mar- 

 gin. At the caudal end of case and on each side ))etween meso- and 

 meta-thorax there are some crenulations lai'ger than usual and altered 

 in shape; from these points on the margin there is a furrow leading 

 within the case; here it widens into an air-cham])er from which the 

 second and third pairs of spiracles open. Dorsum between rim and 

 outer row of tubercles, striate, the lines formed of minute depressions, 

 mid-dorsal area of case more or less marked with reticulated lines; 

 abdominal segments distinct along central area. 



Thorax and cephalic region with many transverse ridges; these 

 include segmental divisions and outlines of legs; laterad of the ante- 

 rior pair of tubercles is a pair of small pores, and another pair at 

 the vasiform orifice. The usual caudal, latero-caudal, and cei)halo- 

 niarginal hairs are not present. Vasiform orific<^ hi'oadly ovate, 

 cephalic margin straight, caudal end ]>roadly rounded, emarginate at 

 the median line; laterally there is a conspicuous, double, marginal 

 rim, and the space not covered by the operculum is overlaid with 

 semicircular, heavily chitinized folds; operculum about four-fifths 

 length of orifice, subo\'ate, distal end somewhat pointed, cephalic 

 margin not coincident with that of orifice; lingula shorter than the 

 operculum, cylindrical at base, broadly spatulate at distal portion, 

 which bears three lateral lobes. 



Adult feinah\ — Length of body, about 1.4 mm.; fore wing, l.-t by 

 0.5 mm.; hind wing, 1.18 by 0.5 mm.; hind tibia, 0.43 mm.; hind 

 tarsus, 0.23; proximal segment, 0.15 mm; abdomen, pale yellow; head 

 and thorax, deep yellow; legs, antenna\ and mentuiu dusky; e3'es, dark 

 red, divided. Wings, immaculate, costal margin bright yellow; main 



