381 
1 
NORTH AMERICAN DIPTERA. 
suberect, strongly decussate pair of niacrochsetse, and two stronger lateral ones 
on each side. Abdomen entirely shining jet-black, clothed witli black bristly 
hairs, a little narrower than thorax, rather conical, first segment not shortened : 
macrochsetfe weak, only marginal ; first two segments each with a median pair 
and a single lateral macrochseta ; third segment with eight or ten, and anal 
segment with about six maci ochsetae, which can be distinguished from the longer 
of the bristly hairs. Legs blackish, femora with long hairs, middle and hind 
tibife l)ristly ; claws and ])ulvilli elongate. fFiwgs much longer than abdomen, 
proportionally larger, without costal spine, grayish hyaline, slightly tawny at 
base and on costal portions, veins mostly tawny ; apical cell long.petiolate, ending 
a little before apex of wing; fourth vein bent at an obtuse angle, without stump 
or wrinkle: hind cross-vein bowed, nearly in middle between small cross-vein 
and bend of fourth ; tegulse very large, white; halteres light tawny, knob blackish. 
Length 4 mm. ; of wing 3.5 mm. 
Described from one specimen from Mr. Charles Robertson. Car- 
linville, Jll. This species bears a considerable resemblance to a 
Hyalomyia, in the form of the head, antennae, rather weak frontal 
bristles, eyes, front, ])roboscis, palpi, abdomen, elongate tarsal claws 
and i)ulvilli, and even in the curved fourth vein. It is to be easily 
distinguished, however, by the rather weak but distinct macrocbaette 
of the abdomen; only four abdominal segments; the fourth vein 
not describing a perfect curve as in Hyalomyia, but somewhat an- 
gular ; and the large tegulae. 
V.4XI>ERWUI.PI.4 H. gen. 
Bears a considerable reseadjlance to the genus Atrophopoda, even 
agreeing with it in the minute, atrophied anterior claws and pulvilli. 
Agrees with it also in the form of the head, thorax, abdomen, legs, 
antenme, proboscis and palpi. It diders from Atrophopoda as fol- 
lows : Eyes hare ; frontal bristles not extending below base of an- 
tenme; arista rather long jiubescent, almost plumose on median 
portion ; facial ridges bristly for some distance above vihrissie ; cheeks 
not so wide. Abdomen strongly conical, except a little narrowed at 
base, not in the least flattened or vaulted, macrochietpe entirely mar- 
ginal. Wings without costal spine ; apical cell rather long petiolate, 
ending at a considerable distance before the tip of the wing; fourth 
vein at bend strong angular, with a distinct stump of a vein; hind 
cross-vein nearly straight. Type, V- atropliopodoides n. sp. 
Named in honor of Mr. F. M. van der Wnlp, of The Hague, 
Netherlands, who has done much valuable work on the Tachinidie 
of the Central American and Mexican faunas. 
Vaiulerwiilpia at ropho|>o«loides n. sp. (?).— Black aud silvery, 
ahdomeu red. Eyes nearly black ; front and face silvery white, blackish in some 
