1917] Smith—Five New Species of North American Tachinide 141 
as long as the second. Arista thickened on approximately the 
basal half, the penultimate joint as broad as long. Eyes bare, 
cheeks nearly one-third as wide as the eye height. Facial ridges 
bristly on the lowest three to four-fifths, vibrissee strong, cruciate, 
on a level with the front edge of the oral margin. Proboscis short 
and fleshy, palpi black. 
Thorax thinly gray pollinose, rather indistinctly vittate. Dorso- 
centrals three, sternopleurals three. Legs black, front pulvilli in 
male as long as the last tarsal joint. Middle tibiz bearing a row 
of four or five bristles on the outer front side. Hind tibie pecti- 
nate with a row of bristles of unequal length. Scutellum black, 
sometimes a reddish tinge at the tip, bearing a weak discal pair, 
three pairs of long marginals and a shorter cruciate apical pair of 
macrocheete. 
Abdominal segments grayish pollinose on the basal margins, 
the first and second segments, each bearing a pair of marginal 
macrochet, the third segment a discal pair and a marginal row, 
the fourth segment bearing numerous macrochetz and_ bristly 
hairs on the apical three-fifths. Hairs of abdomen numerous, 
long and erect. 
Wings hyaline, apical cell open, ending well before the wing 
tip. Posterior cross-vein nearer to bend of fourth longitudinal 
vein than to small cross-vein, the third longitudinal vein bearing 
four or five bristles at its base. Tegule milky white, narrowly 
bordered with yellow. 
Described from one male and three females taken by Dr. R. R. 
Parker at Powderville, Montana, April 18-24, 1916. One female, 
Gallatin Co., Montana, April 26, 1902, taken by Mr. R. Benton. 
Holotype (male) in collection of Montana State College. 
Females of this species deposit an elongate oval, flattened white 
egg. Hence, if the species is referred to the proper genus, as I 
believe, Allophorocera Hendel! is certainly not congeneric with 
Lydella Desv.2. Lydella nigripes Fall. the genotype of Lydella 
has a distinct ventral carina, piercing ovipositor and larviposits 
living larve within the host, thus it appears that Allophorocera is 
a valid genus and not synonymous with Lydella, as stated by Mr. 
Coquillett.* 
1Verh. zool.-bot. Ges. Wien, L1, 203, 1901. 
2Essai Myod., 112, 1830. 
§tType Sp. N. A. Genera, Proc. U.S. N. M., Vol. 37, 563, 1910. 
