1921] Huckett: Ovipositor of Anthomyian Genera 295 
as the suranal plate. It bears two strong sete and a few spine- 
like setulz. The sternum or lower lip is larger usually than the 
suranal plate and is composed of but one chitinous piece which 
is spade-shaped or broadly deltoid in outline. This sclerite is 
known as the subanal plate. Its surface is usually spinulose, 
rarely glabrous, and is clothed with numerous setule. At the 
apex and along the margins are to be found two pairs of strong 
sete. 
The cerci* are two subcylindrical anal appendages emerging 
from beneath and beside the suranal plate. They are composed 
of a distal half, which is club-shaped or knob-like, and a 
proximal half, which forms a stem for attachment and is termed 
the petiole. Sometimes the cerci are sessile, plate-like or 
pubescent. The apex of each club bears one to three long 
setiform hairs and two or more setiferous sense organs, haut- 
sinnesorgane. The latter are tubercular in form, each of which 
is armed with a short, sharp spine at the apex, or is large and 
disc-like, from the center of which emerges a fine hair-like 
papilla. The remaining surface of the cerci is clothed with 
numerous stout setule. 
LIST OF SPECIES. 
Genus Chortophila Macquart. Genus Hylemyia Desvoidy. 
C. antiqua Meigen. H. aemene Walker. 
C. brassicee Bouché. H. alcathoe Walker. 
C. caerulescens Strobl. tf H. coarctata Fallen. tf 
C. candens Zetterstedt.f H. flavicans Stein. 
C. cilicrura Rondani. H. flavipennis Fallen. ft 
C. cinerella Fallen. H. juvenilis Stein. 
C. dissecta Meigen. f H. lipsia Walker. 
C. fugax Meigen. f H. setiventris Stein. 
C. grisella Rondani.f H. strigosa var. nigrimana 
C. laevis Stein.§ Fabricius. tf 
C. longula Fallen. + H. variata Fallen. 
C. muscaria Meigen. Genus Pegomyia Desvoidy. 
C. nuda Strobl.f . affinis Stein. 
C. parva Desvoidy. . calyptrata Zetterstedt. 
C. rubivora Coquillett. hyoscyami Panzer. 
C. substriata Stein. . trilineata Stein. 
. trivittata Stein. 
. unicolor Stein. 
. Winthemi Meigen. 
aolaclaslaclachaclas 
* The term cerci has been chosen from a number of names given by authors as 
least likely to produce confusion. On the other hand there appears to be little 
doubt but that these anal appendages are tactile and not prehensile in function 
and for the sake of explicitness and accuracy would better be designated as anal 
palpi. 
+ See note under Description of ovipositors. 
{ European specimens. 
§ Specimen closely resembles laevis Stein. 
