GEOLOGICAL SURVEY OF THE TERRITORIES. 399 



111 three otlier 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, Xo. 6;) Cimex rufo- 

 ductus, 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, Stal. 



1. T. perditor, Fab., fEntom. 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. custator, Fab., (Syst. Rhyng., p. 164, No. 43;) Pentatoma 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 wsLiiet J 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 Coreid^. 



ArcJdmeriiSj Burm. 



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

 Say, (Jour. Acad. Phila., IV, j). 317, 1;) Piezogaster alhonotatus, 

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

 the United States. The present rei3resentative is from Colorado. 



Metapodius, Westw. 



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

 shagreened. General form of M. terminalis, 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. 

 Rostrum blackish, extending to the intermediate coxiie. AntenuiB 

 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 s[)arsely 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, 'ingu- 



