1921] Huckett: Ovipositor of Anthomyian Genera 299 
Segment IX. Suranal plate scoop-shaped, the basal angles narrowly 
produced ventrad; armed with four strong curved spines; subanal 
plate fanshaped; sete long, hairlike; setule dense, fine and hairlike, at 
the basal angles are found a group of fine, strong bristles; cerci glabrous, 
modified into a pair of thin chitinous plates that border the lateral 
regions of the anus and closely articulate with the concave margins of 
the suranal plate; each is armed with two heavy upcurving apical 
spines in addition to numerous shorter spines of a similar nature, a few 
long, fine hairs on the apical region interspersed amongst the spines. 
Chortophila cilicrura Rondani. 
Segments and intersegments of equal length, sclerites glabrous, 
except the subanal plate which is spinulose. Intersegments spinulose, 
densely striated. 
Segment VI. Tergum divided bilaterally; the caudal and cephalic 
boundaries of the tergites concur with the margins of the segment, the 
dorsal border merges into a semi-opaque discal area, which is spotted 
with chitinous thickenings; accessory pieces present; marginals few, 
diverse, regular; spiracles wider apart than the breadth of the sternum, 
slightly oblique, posterior spiracles bordering the caudal margin. 
Sternum, a narrow mid-ventral plate reaching both margins of the seg- 
ment, flaring slightly caudad, tapering cephalad; marginals continued 
along the lateral margins; conjunctiva spinulose, densely striated. 
Segment VII. Similar in structure and character to segment VI; 
marginal plates of the tergites somewhat constricted caudad; sternal 
marginals separated into two lateral groups. 
Segment VIII. Tergum divided bilaterally; marginal plates strongly 
chitinized, which extend as lateral plates dorsocephalad thereby con- 
stricting the cephalic extent of the discal area. The latter is marked 
by chitinous thickenings; marginals diverse, regular. Sternum composed 
of two elongate sternites, but two-thirds the length of the segment; 
setze spine-like, scattered about the caudal areas; conjunctiva smooth, 
throughout ornamented by knoblike thickenings of chitin. 
Segment IX. Suranal plate scoopshaped; setze the width of the 
club apart; subanal plate spinulose, spade-shaped, sete normal;t 
setule sparsely distributed; cerci glabrous, club or cone-shaped, petio- 
late; setae composed of one long apical and two shorter, besides a few 
setule scattered on the club and petiole. 
Chortophila cinerella Fallen. 
Segments and intersegments of equal length, sclerites glabrous 
except the subanal plate which is spinulose. Intersegments spinulose, 
covered with broad, straight spinules that give the membranes the 
appearance of being clothed with scales. 
Segment VI. Tergum composed of two broad lateral plates, crescent- 
shaped, separated by a wide hyaline discal area; accessory pieces pres- 
tj Normal=Setz consisting of an apical pair approximate, and a preapical 
pair, wide apart, situated on the margins. 
