GEOLOGICAL SURVEY OF THE TEERITOEIES. 399 



In three other specimens the basal and second joints are entirely green. 

 The third joint varies in length, being from one-half to two-thirds the 

 length of the second. 



2. P. ligata, Say, (Heteropt., New Harmony, p. 5, No. 6;) Gimex rufo-. 

 cinctws, H. Schf., (Wanz. Ins., IV, p. 94, Fig. 436.) — This species inhabits 

 Arizona, Missouri, Texas, and California. 



3. P.faceta, Say, (Jour. Acad. Phila., IV, p. 315, No. 6.) — Apparently 

 a rare species, of which single specimens have been obtained in Colorado, 

 Dakota, and California. 



Thyanta, St^l. 



1. T. perditor, Fab., (Entom. Syst., IV, p. 102, No. 90;) Pentatoma 

 fascifera, Beauv., (Ins. Afr. et Amer., p. 150; PI. X, Fig. 8.) — The most 

 typical form of this species inhabits the West Indies and Mexico ; 

 those with the humeral angles shortest are found in Nebraska. It 

 seems to be a very common species in the regions adjacent to the Eocky 

 Mountains. 



2. T. Gustator, Fab., (Syst. Rhyng., p. 164, No. 43;) Fentatoma calceata, 

 Say, (Heteropt., New Harmony, p. 8, No. 19.) — This exceedingly variable 

 species inhabits almost the whole of North America. The most brilliant 

 green specimens are usually to be met with in the Southern States. 

 The variety calceata is common in Maryland, and specimens without the 

 transverse stripe are common as far south as Cape Saint Lucas, Califor^ 

 nia. 



3. T. rugulosa, Say, (Heteropt., New Harmony, p. 7, No. 16.) — This 

 seems to be a rare species. A single specimen has occurred to me, 

 found in Colorado, and another, collected in Cuba. This shows a wide 

 geographical range, and no doubt the intervening regions will yet 

 furnish specimens of it. 



Family Coreldje. 



ArcMmerus, Burm. 



A. calcarator, Fab., (Syst. Ehyng., p. 192, No. 3 ;) Coreus alternahis, 

 Say, (Jour. Acad. Phila., IV, p. 317, 1;) Fiezogaster alhonotatus, 

 Amyot, (Hemipteres, p. 197.) — A species widely distributed throughout 

 the United States. The present representative is from Colorado. 



Metapodius, Westw. 



1. M. Thomasii. New species. — Eeddish or cinnamon-brown, minutely 

 shagreened. General form of M. terminaliSy Dallas. Head black, pol- 

 ished, remotely pubescent, with a narrow fulvous line on the middle 

 and another each side, adjacent to the eye; cranium transversely 

 impressed behind the ocelli; the tylus more or less rufous above. 

 Eostrum blackish, extending to the intermediate coxae. Antennse 

 fuscous or black, minutely granulated, closely, minutely setose ; the 

 apical joint orange; the basal a little shorter than the apical one; the 

 second much shorter than the basal, but a little longer than the third. 

 Pronotum sparsely clothed with minute, pale pubescence, minutely, 

 roughly punctured, beset with granular minute protuberances, which 

 are very remote on the middle, but thickly crowded near, the sides ; 

 lateral margins with a few short teeth, which are erect anteriorly and 

 oblique posteriorly ; the humeral angles moderately prominent, angu- 



