142 Memoirs on the' Coleoptera 



mm., which is very inadequately described and only by comparison 

 with an assumed aquaiicus, which, as stated above, in its typical 

 form probably does not oc(!ur in America. So until further evidence 

 is forthcoming, evanescens should be restored to the list. 



The following species is rather closely allied to novemstriatus, but 

 is broader and less parallel : 



Notiophilus directus n. sp. — Oblong, moderately convex, polished, 

 bright bronze in lustre; head equal in width to the prothorax, the eyes 

 very large; front with seven striae between the coarse sulci; antennae 

 with the four basal joints paler, slender; prothorax two-thirds wider 

 than long, widest and rounded at the sides for a very short distance at 

 apex, thence converging and straight, becoming gradually and barely 

 visibly sinuate at base; surface strongly and densely punctate peri- 

 pherally, the basal foveae well developed and deeply impressed; stria 

 deeply impressed, slightly biabbreviated ; apical cusp moderate; elytra 

 two-thirds longer than wide, evidently wider than the prothorax, obtusely 

 ogival at apex; sides parallel and nearly straight, rather rapidly arcuate 

 at base; striae laterally close-set and coarsely, deeply and closely punctate 

 not quite to the apex, the oblique apical carina well developed; second 

 interspace almost as wide as the distance thence to the sides viewed 

 vertically, the third and fourth intervals a little wider than the others 

 external thereto; dorsal fovea coarse, single and at two-sevenths, the 

 anterior of the two apical foveoles coarse. Length 4.3-4.7 mm.; width 

 1. 4-1. 6 mm. Indiana and Iowa (Keokuk). 



Differs from novemstriatus not only in its shorter and broader 

 outline, giving it a distinctly different habitus, but in the somewhat 

 larger eyes, more strongly rounded thoracic sides at the extreme apex, 

 coarser anterior of the two apical foveoles of the elytra and in some 

 other characters. 



The following is the smallest species known from the American 

 fauna : 



Notiophilus parvus n. sp. — Form somewhat narrow, highly polished 

 throughout, deep greenish-black, the tibiae dark piceous; head slightly 

 wider than the prothorax, the eyes separated anteriorly by somewhat less 

 than their own length; medial frontal striae rather fine, deep, seven in 

 number; antennae dark, paler basally; prothorax four-fifths wider than 

 long, the sides subparallel, broadly, evenly arcuate, becoming gradually 

 oblique and broadly, feebly sinuate in about basal half; base sinuate 

 except at the sides; apical prominence broadly angulate; surface rather 

 coarsely, deeply and closely punctured peripherally, the stria rather 

 fine, impressed, biabbreviated as usual; foveae large, broadly concave, 

 extending from base to rather beyond the middle;' elytra not quite twice 

 as long as wide, wider than the prothorax, gradually narrowed at apex, 

 the sides broadly arcuate; striae feebly impressed, rather coarse, close- 



