1921] Huckett: Ovipositor of Anthomyian Genera 309 
cephalad of the caudal margin. Sternum spatulate or paddle-shaped, 
the blade covered with dense minute spines, marginals distributed along 
the lateral borders; conjunctiva densely spinulose. 
Segment VII. Tergum similar in structure to segment VI, the 
chitin less dense toward the mid-dorsal region, cephalic margin ragged, 
incised; marginals confined to the caudal border. Sternum spatulate, 
unevenly chitinized, the outline at times interrupted, clothed with 
dense minute spines around the caudal margin; marginals even, dis- 
tributed laterad; conjunctiva densely spinulose. 
Segment VIII. Tergum separated by a spacious discal area into 
two lateral plates whose caudal extremities flare, adhering to the margin 
to fuse as a narrow marginal plate, cephalad the plates broaden slightly; 
discal area divided by a median, interrupted thickening of the chitin; 
marginals diverse, irregular. Sternum composed of two elongate sclerites 
pointed at both extremities, attaining but half the length of the seg- 
ment; sete few, distributed irregularly; conjunctiva spinulose. 
Segment IX. Suranal plate scoop-shaped to hemispherical; sete 
wide apart, exceeding the width of the club, setule few, long; subanal 
plate conical, pubescent; sete long, fine, approximate, setulz sparsely 
distributed over the surface; cerci slender, densely pubescent; club 
subcylindrical; petiole slender, longer than the club; apicals long and 
fine, setulee long, few, bristlelike; sense organs consist of two tubercles. 
Hylemia lipsia Walker. 
Segments and intersegments of equal length, sclerites glabrous. 
Intersegments smooth, hyaline, transparent. 
Segment VI. Tergum thinly chitinized extending from side to side 
as a broad plate, cephalic margin indeterminate, incised; discal area 
vestigial; accessory pieces large, setee thickly distributed; spiracles 
approximate, oblique, cephalad of the accessory pieces. Sternum 
obconic, truncate caudad, pointed cephalad, attaining three quarters 
the length of the segment; marginals diverse, regular, distributed along 
the caudal margin; conjunctiva smooth, hyaline. 
Segment VII. Tergum composed of two lateral chitinous plates 
whose extremities flare caudad to partially coincide with the margin, 
cephalad the plates taper, not reaching the margin; discal area spacious, 
hyaline; accessory pieces large, bearing numerous sete; marginals 
numerous, diverse, irregular. Sternum reduced to two short chitinous 
strips on either side of the mid-dorsal line adjacent to the caudal mar- 
gin; marginals diverse, irregular, closely distributed; conjunctiva mem- 
branous, hyaline, occupying the whole ventral area. 
Segment VIII. Tergum divided into two chitinous plates, dorso- 
central, that flare and fuse together along the caudal margin, cephalad 
the plates taper and fail to reach the margin; discal area hyaline, trans- 
parent; marginals diverse, irregular. Sternum reduced to two small 
ovoid sclerites adjacent to the caudal margin, pointed at both extrem- 
ities; setze few; conjunctiva smooth, hyaline. 
Segment IX. Suranal plate triangular; sete the width of the club 
apart; subanal plate conical, glabrous; sete regular; setule few; cerci 
short, knobbed, sessile; apicals single, setulee confined to the distal half. 
