fHE CANADIAN ENTOMOLOGIST. 185 



The ground colour is ordinarily brownish yellow, in some specimens 

 with an olivaceous tinge, in others very dull and grimy. This is some- 

 times nearly uniform over the whole pupa ; again, it may be darker on 

 the abdomen. In one specimen the ground colour ventrally is ruddier 

 than it is elsewhere. The surface is marked by irregular blotches of dark 

 brown, sometimes nearly black. These blotches are largest on the 

 abdominal dorsum, where they usually obscure the ground colour to a 

 greater or less extent ; on the thoracic dorsum they are moderately large, 

 do not, as a rule, cover the field so completely, and with it stand in 

 sharper contrast. Spots smaller and scattered below the spiracle line on 

 the first four abdominal segments, usually absent on the abdomen 

 ventrally. On the wing-cases, head, tongue, legs and antennae these 

 markings are reduced to minute, nearly circular, dots (though several may 

 blend together), distributed sparsely. In some individuals there is a series 

 of shallow pits on the first five abdominal segments (possibly wanting on 

 the first), situated midway between the spiracles and the mediodorsal line, 

 one to a segment. These are black when they appear, but seem to be 

 absent in most cases. 



When the ground colour is darker and the blotches larger than usual 

 the chrysalis may appear almost black. Figs. 7, 8 and 9 show the 

 maculation in this species. 



When the imago emerges in the spring the mesothorax and meta- 

 thorax of the chrysalis shell split along the mediodorsal line, the prothorax 

 usually comes away entire, and the metathorax and wing-cases to the 

 fourth abdominal segment separate from the abdomen. 



A SYNONYM. 



In The Canadian Entomologist, March, 1905, I published the 

 description of an apparently new mosquito, giving it the generic name 

 0' Reillia. Shortly afterwards Mr. Theobald referred to one of his new 

 genera as having "heart-shaped'' wing-scales, and as that was a fairly good 

 description of the wing-scales in O'ReiUia I suspected I had inadvertently 

 described Mr. Theobald's genus. 



Recent correspondence with Mr. Theobald has confirmed me in this 

 opinion, and I hasten to make acknowledgment — O^Riellia, Ludlow, 

 must sink as a synonym of Etorleptiomyia^ Theobald. — [C. S. Ludlow, 

 Laboratory of the Office of the Surgeon-General U. S. Army, Washington, 

 D. C. 



