374 Mr. G. Lewis on 
Oblong, somewhat cylindrical, black and shining; the 
head, surface sparingly punctulate, with two shallow fovez 
placed transversely just before the vertex, frontal stric 
complete and anteriorly bisinuous; the thorax, marginal 
stria complete and posteriorly continues round the angle 
and joins the lateral stria, lateral stria also complete and 
crenulate behind the anterior angles and along the front, there 
are a few irregular punctures along the inner side of the 
lateral stria, the surface has an extremely fine punctuation 
and the scutellar fovea is small but well-marked ; the elytra, 
strize, inner and outer humeral are complete and sinuous, the 
sinuosity of the first is near the humerus, 1-4 straighter and 
all complete, the third is bent away from the second at the 
base, 5 is dimidiate but in one example is in certain lights 
traceable to the base, the sutural extends beyond the middle ; 
the propygidium and pygidium are evenly but not densely 
punctured, the punctures are somewhat closer together on 
the pygidium ; the prosternum, the anterior lobe is marginate 
and rather roughly punctured, keel smooth; the mesosternum 
is rather widely sinuous, marginal stria complete and crenu- 
late; the anterior tibie are somewhat dilated and 5-dentate. 
In form this species resembles Pachycrerus chalybeus, 
Fahr. It may be placed in the catalogue next to Hister 
remotus, Lec., which it somewhat resembles, but it is more 
oblong and cylindrical. 
lab. Iowa City, September 1898 and March 1900 (Z. F. 
Wickham). 
ister hamatilis, sp. n. 
Ovatus, convexus, niger, nitidus ; fronte parce punctulata; pronoto 
stria laterali antice hamata; elytris striis 1-38 integris, 4 basi 
abbreviata, appendice arcuata, 5-6 fere dimidiata; prosterno 
bistriato; tibiis anticis 5—6-dentatis. 
L. 4 mill. 
Oval, convex, black and shining; the head rather narrow, 
surface moderately punctulate, stria complete, arched, but a 
little straight anteriorly ; the thorax, marginal stria fine and 
complete, lateral sinuous in the middle and a little shortened 
at the base, bent anteriorly and ceasing behind the eye, the 
anterior edge is conspicuously bisinuate, anterior angles some- 
what depressed, scutellar fovea small but clear; the elytra, 
striz, inner humeral is shortened a little at the base only and 
anteriorly is conspicuously sinuous, oblique stria very fine, 
dorsal 1-3 complete, 4 a little shortened at the base with a 
short bent rudiment, 5 dimidiate, and the sutural is a little 
