160 GEO. H. HORN, M. D. 



The post coxal process of the thorax is short, translucent and 

 semi-corneous. 



The color is piceous, with the humeri and a narrow space at apex 

 and along the suture paler. Legs testaceous or somewhat darker. 

 Abdominal segments paler along their posterior borders. 



The only variation is in the tendency of the thorax, elytra and 

 abdomen to become brownish. 



Occurs from Alaska to Fort Simpson and the Lake Superior region, 

 (Michipicoton River, Schwarz). 



Q. peregrinus Grav, [Staph.), Monog. p. 53; Erichs. Staph, p. 550; termi- 

 natus Mels., Proc. Acad, ii, p. 39; longiceps Fv. mss. — Head elongate oval, much 

 longer than wide, as long as the thorax, feebly constricted behind, and with 

 punctures as in sublimbatus. Labrum bilobed. Eyes oval slightly oblique, 

 subtruncate in front. Antennae as in sublimbatus. Thorax polished, broader 

 than long, narrower in front, sides feebly, base broadly arcuate, a dorsal series 

 of three punctures, no lateral series, marginal punctures finer and distant, 

 Scutellum smooth. Elytra conjointly a little longer than wide and slightly 

 narrower than the thorax, surface sparsely not coarsely nor deeply punctate, 

 sparsely pubescent. Abdomen more densely punctured than the elytra and 

 with somewhat longer brownish hair, beneath punctured as above, body very 

 sparsely punctate. Femora sparsely and finely punctulate, tibise spinulose. 

 Length .24— .36 inch; 6—9 mm. 



The sexual characters are as in suhlimhatus. 



The color is here variable. A few specimens are entirely piceous 

 with paler legs; terminatus Mels., has the last two abdominal segments 

 paler; the thorax becomes quite rufous in many specimens and the 

 elytra and abdomen rufo-piceous. In those specimens with a paler 

 abdomen the margins of the segments are testaceous. 



The post coxal process is as in suhlimhatus. 



Occurs from Canada to the Carolinas. It is abundantly distinguished 

 from all others in our fauna by its elongate head, which is very feebly 

 narrowed posteriorly. 



i\. capuciiius Grav. (Staph.), Monog. p. 40 ; Erichs. Staphyl. p. 531 ; pedi- 

 culus Nord. Symb. 79; Erichs. loc. cit. ; inversus Say, Trans. Am. Phil. Soc. iv, 

 p. 449; bardus Mels. Proc. Acad, ii, p. 39; ater Zieg. Proc. Acad, ii, p. 266; ma7-- 

 (jinalis Makl. Bull. Mosc. 1852, ii, p. 315; coenobita Fv. mss. — Head orbicular % 

 or slightly oval 9; smooth, shining, moderately constricted behind, a small 

 puncture at the base of the antennse, a second at the middle of the upper 

 border of the eye, a third above the eye on the occiput, another behind the 

 eye near which are numerous smaller punctures; front with two punctures 

 between the eyes. Labrum bilobed. Eyes oval, slightly oblique, subtruncate 

 in front. Antennse attaining the middle of the thorax, slightly thicker exter- 

 nally, last joint longer and obliquely emarginate. Thorax slightly wider than 

 long, narrowed in front, sides very feebly, base broadly arcuate, anteriorly with 

 a discal series of three punctures exterior to which is another puncture forming 



