118 FAMILY V.-TRYXALIN^. 



intercalary vein The scapular area is decidedly expanded 

 in the male, and filled with a single series of moderately 

 strong curved cross veins. The posterior femora are not 

 slender, they extend somewhat beyond the end of the abdo- 

 men. The valves of the ovipositor are but little exerted. 



Opeia obscura Thos. 



This is a western species, but a male, female and pupa 

 w^ere found late in October in the extreme western part of 

 the state, in Brown's Valle}'. They occurred in some num- 

 bers in a swampy place, but were mistaken for common 

 insects, hence but few were captured. It is a very variable 

 species, with a brown or green dorsum, either plain or with 

 a streak of fulvous along the median vein. The sides are 

 marked by a stripe extending backward from the eye, wid- 

 ening and generally becoming more obscure. When most 

 distinct, this stripe consists of five parts, as follows: an 

 upper streak of brown or fuscous below the lateral car- 

 inas, below this a lighter streak followed by a white line, 

 and still below this the light and dark streak, repeated. 

 These five elements of the lateral stripe vary greatly in in- 

 tensity of coloration, but can nearly always be seen, and in 

 all cases the lower fifth of the pronotum at least is brown. 

 The tegmina have the discoidal area occupied by a row of 

 large usuall}' distinct quadrate fuscous spots and the scapu- 

 lar area contains a whitish mark. 



This interesting species is illustrated in Fig. QIV2. 



Fig. 67V2. — Opeia obscura. Original. 



GENUS Eritettix Bruner (1889). 



Head conical, occiput not elevated, furnished with three 

 carinfE, one median and two supplementary ; the former ex- 



