321 



Anthocoris, Fallen. 

 A. musciilus. 



Bedtivius musculus, Say, Heteropt. New Harmouy, 32, No. 6. 



Collected above timber-liue, in tlie mountains of Colorado, by Lieu- 

 tenant Carpenter. 



Family ARADID^. 



Ae-Adus, Fab. 



1. A. acutus. 



Aradus acutus, Say, Heteropt. New Harmony, 28, No. 2. 

 Aradus americanus, H.-Scbf., Wanz. lus. viii, 115, fig. 889. 



Found above timber-line, in the mountains of Colorado, by Lieutenant 

 Carpenter. Common also in Florida, Indiana, «&c. 



This species is found under very contrasting- climatal conditions. In 

 the subalpine regions of the western Territories, it is liable to be sud- 

 denly caught by the frosts and severely cold winds of those exposed 

 situations ; while on the sea-coast of Florida, it exists in a climate loaded 

 with moisture, of subtropical warmth and of perpetual mildness. In 

 Southern Indiana, it is subject to the blasts of torrid heat, which rush 

 over the plains from the farther South. But, in all these different con- 

 ditions it retains a very steady uniformity of appearance, and does not 

 exhibit much variation in the details of structure. 



2. A. tuberculifer. 



Aradus tuherculifer, Kirby, Fauua Bor.-Amer. iv, 278, pi. 6, fig. 5. 



Inhabits Colorado, British America, California, &c. 



Specimens were collected above timber-line in the first-named State. 

 Mr. Kirby's came from the Hudson's Bay Territory. 



The late Robert Kennicott obtained specimens in the vicinity of the 

 Yukon River in Walrussia, and near the Great Bear Lake and Macken- 

 zie River in British America. 



3. A. rectus. 



Aradus rectus, Say, Heteropt. New Harmony, 29, No. 4. 



Inhabits Colorado, New Mexico, British America, New England, 

 Georgia, North Carolina, and Florida. 



4. A. wqualis. 



Aradus wqualis, Say, Heteropt. 29, No. 6. 



Inhabits Texas, Indian Territory, New Jersey, Illinois, &c. 



5. A. cinnaniomeus. 



Aradus cinvamomeus, Panzer, Fauna German. 100, No. 20; Fieb. Europ. Hemipt. 

 Ill ; H.-Scbf., Wanz. Ins. v, 91, fig. 539, 



Inhabits Texas, Missouri, and Southern Europe. 



6. A. ampliatus. New sp. 



Broad and thin ; grayish-black: form similar to A. crenatus, Say. Head 

 densely granulated; to the tipof the protuberance longer than the width 

 across the e3'es, the protuberance slightly tapering toward the tip ; pro- 

 cesses of the antenniferous tubercles slender, very acute, and not quite 



