766 The American Naturalist. (August, 
The pupa is very robust in form and about 7 mm. in length, the disk 
of the prothorax bears numerous short bristles, while the sides and dorsum 
of the abdomen are armed in the same way. The terminal segment 
bears a short, strong horny spine at apex. The eggs were too much 
damaged when received to admit of careful description, but were yellow 
in color and deposited in elongate masses, each egg attached by one end 
to the leaf of the food-plant, Eggs and full-grown larve were sent me 
by Professor Theo. D. A. Cockerell who collected them at San August- 
ine Ranch on the east side of the Organ Mountains of New Mexico in 
August. : 
State University of Iowa. H. F. WICKHAM. 
May 27th, 1895. 
EXPLANATION OF PLATE. 
Fig. 1. Cychrus elevatus Fabr. 
Fig. 2. Chlænius sericeus Forst. 
Fig. 3. Doryphora (Mycocoryna) lineolata Stil. All the dissections 
are lettered alike, ant., antennæ, l. leg, 1b., labrum, md., mandible, 
mt., mentum, mx., maxilla. 
Cecidomyia atriplicis [Towsend, Am. Nat., Nov., 1893, gall 
only] n. sp.— 9 about 4 mm. long, general color grey ; abdomen black- 
ish above, slightly reddish at sides, presenting, especially towards base, 
scattered silvery hairs, Ovipositor not exserted. Thorax above leaden- 
grey, with two distinct longitudinal grooves. Legs and antennæ grey. 
Eyes black, joining above, almost covering head. Halteres with the 
stem grey and the knob dull white. Base of occiput with the fringe of 
hairs. Antenne with the whorls of hair obscure, 13-jointed, 3rd joint 
much longer than 4th, but hardly so long as 4-5, which are equal. 
Joints 4 to 11 decreasing gradually in length; 12 and 13 very small, 
looking like one deeply-constricted joint. Wings greyish-white, hardly 
at all translucent, veins grey, costal vein black, ending abruptly at 
junction with first longitudinal. Cross nervure slightly oblique, situ- 
ated almost at base of wing. The anterior fork of the third longitu- 
dinal is very obscure, and there is a wing-fold stimulating a third lon- 
gitudinal, so that the wing seems to have four longitudinal veins, all 
simple. 
Pupa-shell reddish-brown, with the covering of the wings concolor- 
ous or rather paler. 
Hab. Bred, May 9, 1895, from galls on Atriplex canescens collected 
on College Farm, Las Cruces, N. M. The galls are red on one side. 
