D ES MERE att 
1893 ] Entomology. 1021 
Figs. 12-21.— Various kinds of androchonia and scales, showing rela- 
tive sizes. 
BIBLIOGRAPHY. 
Anthony, J. The Markings on the Battledore Scales of some of 
the Lepidoptera. 80., London, 1872. 
McIntire, S. J. Notes on the Minute Structure of the Scales of cer- 
tain Insects. 8o0., London, 1871. 
Miller, F. A prega costal das Hesperideas. 4o., Rio, 1878. 
Scudder, H. S. Antigeny or sexual dimorphism in Butterflies. 80., 
Boston, 1877. 
Butterflies of Eastern U. S. and Canada. 
Waufor, T. W. On certain Butterfly scales characteristic of Sex. 
0o., London, 1867, 1868. 
Fleshy Cecidomyiid Twig Gall on Atriplex canescens.— 
Numerous fleshy tumor-like twig gall, were found on Atriplex canescens, 
May 13, 1892, on mesa back of college grounds, near Las Cruces, New 
Mexico. One gall that was opened disclosed two cecidomyiid pupæ in 
separate cells within. This gall, with its occupants, was placed in alco- 
hol. Other galls were pinned and allowed to dry. The latter, on 
being opened nearly a year later, disclosed a cecidomyiid larva, several 
cast pupal skins, and in one cell a transformed hymenopterous parasite. 
From the alcohol gall the following description is drawn. 
Gall.—Length, 12 mm. ; width, 43 to 63 mm. Rather oblong, more 
or less irregular in shape, fleshy when green, tumor-like, formed on one 
side of twig, which is itself involved in the gall. Pale greenish in 
color, sometimes more or less reddish as noticed in the dried galls. 
Outer skin of gall smooth. Two cavities inside, each about 2 by 3 mm. 
in diameter. 
One specimen. This cecid may be called Cecidomyia atriplicis. 
The dried galls show the twig plainly, not involved in the gall. They 
are red to greenish in color, surface naturally wrinkled and somewhat 
roughened, with sections of the thin bark of the twig showing upon 
the surface, but I am inclined to consider them the same as the above. 
This opinion is induced by the similar character of the occupants. 
The cells also are similar in size and shape, several in each gall accord- 
ing to size of latter. Some of the smaller dried galls are more rounded 
in shape.—C. H. TYLER TOWNSEND. 
Trichodactylus xylocopæ in California.—Some little time ago 
I received from Mr. D. W. Coquillett, Los Angeles, California, an inter- 
