402 GEOLOGICAL SURVEY OF THE TERRITORIES. 



tured, and wrinkled. Antennae either piceous black, or black, with the 

 bases of the first, second, and third joints pale piceous; the under side of 

 base of the first joint whitish. Eostrum black, reaching to the interme- 

 diate cox[^. Pronotuni very moderately convex, a little pubescent, 

 coarsely, deeply punctured; the lateral margins slenderly carina ted; the 

 carina obsolete at the anterior angles, but considerably elevated on the 

 moderately prominent posterior angles, and forming a sharp edge behind 

 tbe humeri. Callosities, broad, large, bald, minutely granulated each 

 side, with two impressed points behind their middle. Propleurse 

 coarsely, confluently, deeply punctured, except anteriorly, where the 

 punctures are fine; meso- and metapleuriB rather coarsely, irregularly 

 granulated, coarsely punctured behind and below. Legs deep black, 

 pubescent, or with the anterior and intermediate tibicTe pale piceous on 

 the middle; posterior femora with five curved spurs, from behind the 

 middle to near the tip; at tip, Avith two or three close set, very small 

 teeth; tarsi pale piceous ou the base of the first joint. Scutellum 

 coarsely, remotely punctured. Corium less coarsely, rather remotely 

 punctured; embolium smooth, minutely, sparsely, obsoletely punctured, 

 minutely pubescent; membrane brownish-black, with long, close, very 

 numerous iiervures. Tergum red as far as the base of the antepenul- 

 timate segment, or only a little red on two or three of the basal seg- 

 ments; venter deep black, shining, immaculate, very minutely shag- 

 reened, pubescent at tip. 



Lengtli to tip of venter, 12-13 millimeters; width across the humeri, 

 3 millimeters. 



Inhabits Colorado; Boss Fork, Idaho; Louisiana; and Kansas. The 

 simies of the posterior femora vary in number from three to six; this 

 variation occasionally occurs on the opposite sides of the same specimen. 

 There seem to be about twenty nervures to the membrane, of which two 

 or three are usually forked. 



Stacliyocnemus, St&l. 



'S. apicalis^ Dallas, (British Museum List, II, p. 479, No. 31.) — It inhab- 

 its Dakota, Texas, Mexico, and Florida. 



Protenor, St§,l. 



P. BeJfragei, Haglund, (Ent. Zeit., Stettin, 18G8, p. 1G2.)— Brought 

 from Colorado by the survey. It is found as far east as ]\Iarylaud, and 

 •extends north into Michigan. 



Keides, Latr. 



1. ^. spinosiiSy Say, (Amer. Ent., vol. I, PI. 14;) Neides tHsphwstis^ 

 Hope, (Catal., p. 24.) — Brought from Ogden, Utah. It is common in 

 the Atlantic region, and extends west into Arizona. 



2. ]^. decurvatus, new species. — Form and general appearance of JV^. 

 spinosus^ Say. Luteous, or pale cinnamcn-yellow. Head, with a slender 

 decurved tooth projecting forward from the vertex. Pronotum propor- 

 tionally more elongated, less coarsely punctured, the callosities at the 

 anterior end of the median carina small and indistinct; the sternum dull 

 black, no spines against the posterior coxae; tip of tbe corium of heme- 

 lytra destitute of the dusky spot. Venter densely punctured. 



Length, 7-9 millimeters; width across the humeri, J-l millimeter. 

 Inhabits Colorado, Washington Territory, and New Hampshire. 



