ClCINDELID.-E AND CARABID/E 53 



angles; surface moderately concave and reflexed laterally, the impressions 

 nearly as in sahlbergi; elytra oblong-oval, much wider than the prothorax, 

 just visibly widest at three-fifths, the sides broadly arcuate to the very 

 distinct though rounded humeri; striae feebly impressed, finely, feebly 

 punctate, the intervals feebly convex to nearly flat, the third stria with 

 two to four punctures; legs rather slender but not very long. L,ength 

 8.0-9.4 mm. ; width 3.1-3.3 mm. Indiana and Arkansas. Five examples. 



Differs from sahlbergi in its small size, relatively much smaller 

 head and prothorax, the latter less inflated anteriorly, longer 

 antennae and some other evident features. The small impression 

 at each side of the middle of the pronotum, mentioned under oregona, 

 must be a general character to a great extent, as it is visible also in 

 this species and sahlbergi, of which I have a large series from 

 Labrador and New Hampshire. 



Group obliqua Lee. 



The species of this group are rather numerous, inhabiting the 

 more eastern and temperate parts of the continent and are particu- 

 larly abundant in Colorado and neighboring parts of the lower Rocky 

 Mountain system ; they are narrower and more elongate than those 

 of the metallica group and always have the sides of the prothorax 

 oblique and nearly straight posteriorly to the obtuse though nearly 

 always sharply denned basal angles. I regard provisionally a 

 specimen collected by Mr. Schwarz at Garland, Col., as representing 

 obliqua, although there are three or four punctures on the third stria; 

 as it agrees with the description in all other particulars, this plurality 

 of foveae would seem to be inconclusive, in view of the general 

 variability in this respect. Of obtusa Lee., I have a single example 

 taken by Wickham at Provo, Utah. The following three seem to 

 be as yet undescribed : 



Nebria incerta n. sp. Form nearly as in obliqua and similarly deep 

 shining black, with piceous legs, but with the hind body relatively shorter 

 and broader; surface without trace of metallic coloration; head smooth, 

 polished and convex, unimpressed; antennae slender, testaceous through- 

 out; prothorax fully three-fifths wider than long, formed as in obliqua but 

 with the anterior transverse impression very feeble; elytra oblong, 

 parallel, two-fifths wider than the prothorax and one-half to three-fifths 

 longer than wide, the sides moderately arcuate, the basal bead meeting 

 the marginal in a very obtuse but evident angle; striae not very fine 

 but only very feebly impressed, the third with three to five small setig- 

 erous foveae, the intervals almost flat; femora blackish, the tibiae and 



