21 



Var. B. Thorax without a black spot in the disk, body underneath piceous. 

 [Previously described as Feronia atrlmedius by Say. — Ent. Works ii. 

 460.] 



[50] 12. IsoPLEURUS NiTiDUS, A^r^^.— Plate i. fig. 6. Length of body 

 3^ lines. A single specimen taken in the Rocky "Mountains. 



Body very glossy, underneath rufo-piccous, above bronzed with a light tint 

 of piceous. Upper-lip rufous; palpi, antennge which are slender, side-cover 

 of the elytra and leg3 roddish-yollow: prothoras rather wider than long, 

 punctured posteriorly, basilar iuipressions doubled : furrows of the elvtra 

 slightly punctured, at the apex impunctured. [Placed in LcContc's List, 

 p. 10, with a Uiark of interrogation, under Auiara sfpte/ilrionalis, Lee, and 

 with the note that the name has bc'.u previously employed for another 

 species.] 



[51] 73. Patrobus Ameuicanus, D^: Jean. — Three specimens taken in 

 Lat. 54°. Length of body 5| lines. 



[Previously described as Feronia {Patrolus') lonr/icollt's, Say.; not un- 

 common in Ontario. For description i'«> Say's Ent. Works, ii. 466.] 



[52] 74. Peryi'IIUc) [Bembidilm] bimaculatus, Kirbi/. — Length of 

 body 3 J lines. Taken in iat. G5°. 



Body glossy, underneath black, above black-bronzed with a slight greenisli 

 tint. Head triangular, with :i thick convex neck; frontal impressions long 

 and deep; antenna longer tliuu the pj-olhorax, third joint of the length of 

 the succeeding ones; scape and palpi rufous; pcothorax obcordate convex, at 

 the base depresr^cd, constricted and grossly punctured ; dorsal c' ^nnel as in 

 Pairohus; basilar impressions single, round and dcoplsh; elytra sughtly fur- 

 rowed, with the furrows punctured; the scvoulh from the suture nearly obli. 

 terated; apex nearly smooth, near which is an oblique pule spot ; legs rufous 

 with darker thighs, especially in the middle. 



N. B. — When the elytra are raised from the body, they are dusky-bronzed. 

 [The old genus Peryphus is included by Lc Oonte as a group under Bembi- 

 dium, Pro. Acad. N. S. Phil. 1857, p. 3.] 



75. Perypiius [Bembidiu.m] sordidus, Kirb^. — Length of body 3 lines. 

 A single specimen taken in Iat. 54°. 



This so nearly resembles /■*. bimaculatun, that I first put it aside as an 

 immature specimen, but further cunsidcration induces me to consider it as 

 distinct. It is wholly palu rufous, except the head, the prothorax and the 

 anus : the three first joints of the antennx and the base of the fourth are 

 also rufous : the prothorax appear.^ rather narrower in proportion, and less 

 distinctly punctured ai the base ; the spot at the apex of the elytra i3 larger, 

 and the thighs are rather slenderer. 



