204 Journal New York Entomological Society. [Voi.iv. 
CECIDOMYIID^E. 
Cecidoinyia neomexicana, sp. nov.* 
$ . Length 3 mm. Dark slate grey. Sutures of abdominal segments reddish 
two longitudinal hairy bands on thorax; abdomen hairy. Halteres dull white. 
Antennae 2+12 jcinted, very dark grey, sometimes pale; legs grey, paler. Wings 
greyish, venation normal; vii (following Comstock’s nomenclature) veiy weak; fold 
representing v distinct, iii 2+5 reaching margin a little above tip of wing; lower 
margin with a fringe of hairs. Antennal joints elongate, cylindrical, not moniliform 
with sparse whorls of short hairs ; joint 3 much longer than 4. Pupa-shell red-brown* 
Galls numerous, many together, on twigs of Atriplex canescens ; globular, 8 to 
12 mm. diam., yellowish-white. Composed of loose felted hairs, so that the outside 
is soft, wool-like in appearance, yielding to pressure. The cell within is green, not 
at all woody. Flies issued from September 30 to October 1. 
Habitat: Organ, N. M., 5100 ft. Also common on Tularosa 
Creek. The fly resembles C. atriplicis , Twns., but the gall is quite 
different. Prof. Townsend has known the galls of C. neomexicana for 
several years, but had failed to obtain the fly. 
APIDHE. ,j 
Perdita townsendi, sp. nov. 
9. Length about 7.5 mm., shining, fairly pubescent. Head dark Prussian 
green, area between clypeus and antennae black. Vertex, occiput and cheeks with 
conspicuous white pubescence, sides or front also pubescent. Front minutely granu¬ 
lar, with sparse small punctures. Clypeus, sparsely but distinctly punctuied, moder¬ 
ately high, rounded at top, notched. Eyes very dark brown. Clypeus except 
the usual black dots, lateral face-marks, two spots representing supraclypeal marks, 
scape except a black streak at and above, and basal half of mandibles, prim¬ 
rose yellow. Lateral face-marks shaped almost exactly as in P . rectangulata , but 
separated from clypeus by a black line, and the narrowing about level with 
the lower part of the antennal sockets, the linear upward extension very short. 
Flagellum dark sepia brown above, yellow beneath. Thorax with moderately 
dense white pubescence, shining dark greenish-blue or bluish-green, the 
mesothorax more green, the metathorax more blue. Mesothorax smooth, sparsely 
punctured ; metathorax minutely granular, or rather tessellate. Tubercles and hind 
border of prothorax narrowly, very pale yellow. Tegulse hyaline with a yellow basal 
mark. Wings milky-hyaline. Stigma and nervures colorless. Marginal cell with 
the poststigmatel portion slightly the longer. Second submarginal large, narrowed 
about half to marginal. Third discoidal distinct. Legs primrose yellow; patch on 
anterior and middle tibise behind, and hind tibiae except extreme base, black. Small 
joints of hind tarsi darkened. Abdomen broad and flat, very pale yellow, with con¬ 
tinuous brown-black bands, occupying the adjacent apices and bases of segments, 
1-2, 2-3, 3-4, and 4-5, the first two of these four bands being broader than the 
others. Segment I has also its base black, leaving only a rather narrow transverse 
* Mr. Coquillett refers C. neomexicana to Asphondylis, where I suppose C. 
atriplicis should also go. T. D. A. C. 
