262 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



species, 6". coloradensis, n. sp. Mr. Bruner's thorough report on the 

 Kansas Orthoptera does not give 6". curtipennis as occurring in that 

 State, so that Iowa seems to be the western limit of the eastern species 

 and Nebraska (probably north-western) the eastern limit of the west- 

 ern species. 



2. Stenobothrus COLORADENSIS, n. sp. Figs. 25a, 25b. 



Sienoboihrns ciniipctinis, Thos., 1870. Prelim. Rept. U. S. Surv. 

 Mont., 430. 



Stenobotlinis curtipennis, Bniner, 1877. Can. Ent., IX, 144. 



Stenobothrus curtipennis, Scud., 1880. 2nd Rept. U. S. Ent. Com., 

 App. II, 25. 



Stenobothrus curtipen?iis, Bruner, 1S85. Rept. Com. Agr., 307. 



Stenobothrus, sp., Uhler, 1877. Bui. U. S. Geol. and Geog. Surv. 

 Terr., Ill, 793. 



Length (female) 21 mm. 



Tegmina ■. r 8 mm. 



Antennai 7 mm. 



Femora ; 12.5 mm. 



The vertex is narrow, about equal to the short diameter of the eye. 

 The scutellum has a distinct arcuate sulcus divided by a very plain 

 carina running close to its anterior margin. The walls of the scutel- 

 lum consist of a distinct raised line which is curved rather than angu- 

 late. The lateral foveolse are linear. The frontal costa is rounded, 

 narrow, and punctate above the ocellus, with its sides sub-parallel; 

 below it is shallowly sulcate with the sides somewhat rapidly divergent. 

 The antennae are filiform, flattened, and barely as long as the head and 

 pronotum. The pronotum has the median carina very distinct, cut 

 very slightly behind the middle by the principal sulcus. The first 

 sulcus is about half-way between the anterior margin of the disk and 

 the principal sulcus. The lateral carinse are gently curved, being most 

 nearly approximate about the first sulcus. The posterior margin is 

 rather gently arcuate with the disk at that point very little wider than 

 the anterior margin. The lateral lobes of the pronotum are a little 

 higher than long. The tegmina are yellowish-brown, plain, and about 

 half as long as the abdomen. The posterior femora and tibiae are 

 reddish-yellow and immaculate except for the black spots at the knee. 

 The color is olivaceous brown deepening to a reddish brown on the 

 abdomen, with the top of the" head and the disk of the jjronotum 



