ART. 2 LARVAE AND PUPAE OF THE FAMILY LEPTIDAE — GREENE 15 



(fig. x) ; these spiracles are similar to the thoracic spiracles (fig. w) 

 *but are slightly smaller; last segment terminates in two very robust, 

 conical tubercles; near their dorsal base is a median unpaired, deep, 

 rounded puncture; on the dorsum of the segment is a pair of oblique, 

 elliptical depression, the edges of wliich are faintly annulated on the 

 outer side but quite broad and nearly smooth on the inner side ; each 

 side of the segment forms a large, rounded lobe beset with an arcuate 

 row of seven A^ery large, spine-like projections pointing backward; 

 at the basal margin of the segment and near its longitudinal middle 

 line are four spines in a row, the two in the middle very long and the 

 two exterior small. On the venter along the posterior margins of 

 the segments are rows of spines as on the dorsum, but the ventral 

 spines are longer than the dorsal. 



Length, 30 mm. ; diameter of thorax, 7 mm. ; diameter of abdomen, 

 6 mm. 



Fairbury, 111., no date, A. H. Mundt, collector. Also a small label 

 bearing " 22." Another specimen labeled " 3893. Issued April 20, 

 '86." 



LEPTIS MYSTACEA Macquart 



Plate 3 



Habits. — Larvae are predacious and have been recorded as occur- 

 ring under moist dead leaves on the ground in the woods. 



There are no specimens of the larvae of this species in the national 

 collection. 



Pupa (fg. 13). — INIedium sized, luteous, subpolitus; thorax slightly 

 wider than abdomen. Head rounded, slightly wnder than high; 

 antennal capsules widely separated, appearing like a long pointed 

 ridge on the front of the head (fig. //) ; just above and between 

 the bases of the antennae are two round, rugose tubercles; above 

 this pair of tubercles are three faint ocellar punctures; dorsally, 

 at the base of the head, are six radiating faint w^rinkles. Thorax 

 slightly longer than wide; on the anterior suture of thorax and 

 close to the median line are two crescent-shaped areas the edges 

 of which are darkened; at each of the anterior thoracic angles is 

 a dark brow^n, rugose elevation upon which is situated the thoracic 

 spiracle (fig. z) ; its large entrance is yellow and contains numerous 

 small, parallel, eliptical slits; wing pads smooth, reaching to the 

 base of the first segment; leg capsules reaching a little beyond the 

 wang pads. Abdomen is composed of eight segments of equal 

 length; the first segment is smooth and destitute of spines; each 

 of the segments from 2 to 7 has a posterior, transverse row^ of sharp- 

 pointed spines of unequal length, and also on the dorso-anterior 

 surface a transverse row of four sharp-pointed spines, of which 



