154 Memoirs on the Coleoptera 



variety of tcedatus. The west coast form named oregonensis hy 

 LeConte, is different from tcedatus, but I have not been able to 

 . recognize it among my material ; it is allied evidently to the species 

 which I named franciscanus, but has the prothorax smaller, scarcely 

 more than half as wide as the elytra, almost opaque and densely 

 and finely rugose; the impressions and rugosities of the head seem 

 to be moderate in development; oregonensis also is a distinct species' 

 and not a variety of tcedatus. The following has a more coarsely 

 and deeply biexcavated front than even franciscanus and it should 

 also have a specific status: 



Carabus bicanaliceps n. sp. — Elongate, moderately convex and but 

 slightly ventricose, the head and pronotum deep black and highly 

 polished, the elytra dark brown and opaculate; under surface shining, 

 blackish-piceous, the legs black; head four-sevenths as wide as the 

 prothorax, with very prominent eyes; surface devoid of fine sculpture 

 of any kind but very coarsely rugose, with a broad, deep and irregular 

 sulcus at each side, extending from near the epistomal apex to a line 

 bondering the eyes posteriorly; the two broad sulci are separated by 

 a prominent ridge, the summit of which is canaliculate; labrum deeply 

 sinuate, the surface deeply excavated medially; antennae rather thick, 

 black, feebly picescent distally, not quite half as long as the body; 

 prothorax a fifth wider than long, widest before the middle, the sides 

 broadly rounded, becoming feebly oblique and broadly, just visibly 

 sinuate behind the middle, the hind angles evenly and strongly rounded 

 and produced posteriorly; margins strongly reflexed, especially at base, 

 and with the edge thick; base transverse between the lateral lobes; 

 apex rather narrowly sinuate medially, broadly rounded laterally, with 

 thick marginal bead throughout; surface loosely but deeply, coarsely 

 vermiculato-rugose, broadly impressed postero-laterally, the median 

 furrow coarse and very deep; elytra two-thirds longer than wide, less 

 than one-half wider than the prothorax, oval, widest slightly behind the 

 middle, the sides broadly arcuate, rapidly converging at the humeri; 

 apex gradually obtusely ogival; striae about 26 in number, deep, separ- 

 ated by fine continuous carinae, the narrow concave intervals very 

 obscurely punctate; foveae of the three series very deep, finely polished 

 at the 'bottom, the submarginal series of smaller and closer fovese distinct. 

 Length 22.0 mm.; width 8.9 mm. Washington State (Olympia). A 

 single female. 



Distinguishable from franciscanus and montanicus by the more 

 opaque elytra, with larger and much deeper foveae and coarser, 

 deeper, more sulciform and less numerous fine striae; in montanicus 

 the fine striae are about 30 in number. In the two species mentioned 

 above the elytral foveae are not connected by a coarser ridge as 

 they are in bicanaliceps, and, in montanicus, the head is nearly as 

 smooth as in tcedatus Fabr. 



