2IO DAVENPORT ACADEMY OF NATURAL SCIENCES. 



Opomala bracJiyptera, Bruner, 1885. Rept. Com. Agr. , 307. 



Opomala bi'achyptera, Morse, 1894. Psyche, VII, 13 and 106. 



Opofnalo brachvptera, Beutenmiiller, 1894. Desc. Cat. Orth. , 291. 



Opsomala brachyptera, Walk., 1870. Cat. Derm. Salt., Ill, 507. 



Pseudopomala brachyptera. Morse, 1896. Psyche, VII, 325 and 

 343. fig- 6, 6a, 61). 



Mcrmiria brachyptera, Oshorn, 1892. Proc. Iowa Acad. Sci., 1890- 

 1891, 4. 



Hab. Northern United States east of the Sierra Nevada Mountains. 

 This species has an extended range east and west, though its distribu- 

 tion throughout the territory it inhabits is com])aratively irregular. 

 There is a gap in this range extending from Illinois to New York and 

 Pennsylvania (unless P. aptera is a synonym), but since it is found in 

 New England and from Iowa to Utah there is little doubt but that its 

 non-occurrence in the intermediate area is due to the fact of its ex- 

 treme rarity. 



V. TRUXALIS, Fabr. 



Vertex horizontal, semi -elliptical, length in front of the eyes a little 

 less (female) or a little more (male) than the distance between the eyes. 

 Furnished with a delicate median carina. Lateral carinae distinct 

 though slight with shallow sulci behind them. Lateral foveolce entirely 

 wanting. Frontal costa narrow, deeply (male) or shallowly (female) 

 sulcate except just below the vertex where it is suddenly contracted into 

 a mere ridge. The face, seen from the side, is strongly oblique and 

 straight. The antennae are flattened strongly (female) or moderately 

 (male) at the base and acuminate, about as long as (female) or a 

 little longer than (male) the head and pronotum. The jjronotum has the 

 disk plain with the three carinse parallel, about equally distinct, the 

 median cut by the last sulcus only, the lateral by all the transverse 

 incisions. The metazone is a little shorter than the prozone with its 

 posterior border very obtusely angled. The lateral lobes of the pro- 

 notum are perpendicular and parallel, a little longer than high, with 

 both the anterior and posterior margins decidedly oblique, the former 

 straight, the latter sinuate with the lower border straight posteriorly 

 and slightly oblique anteriorly. The lobes of the mesosternum are 

 separated by a space broader than long (female) about as broad as 

 long (male). The lobes of the metasternum are separated by a space 

 about as broad as long (female) or they are contiguous (male). The 

 tegmina are much longer than the abdomen, with the discoidal area 



