14 GEO. H. HORN, M. D. 



considerable number of feebly separated genera. The modifications 

 alluded to are in the very feebly arcuate prosternal sutures, the an- 

 tennae and the hind tarsi. In form and color this species resembles 

 Microrluujm impremcoUis, but the pubescence is more evident. 

 One specimen, Florida. 



EIJC'K'EMIS Alireus. 



Form oblong, moderately robust ; antennae passing very little the bind angles 

 of the thorax, first joint moderately long, second small, third longer than the 

 fourth, joints 4-10 transverse, dentate, the eleventh longer, oval and acute at 

 tip ; head deeply inserted, eyes oval, entire, not narrowing the antennal groove ; 

 clypeus distinctly narrowed at base {capucina), or scarcely so (americana), strongly 

 inflexed, the apical margin distinctly sinuate at middle {capucina), or broadly 

 emarginate {americana), front carinate ; prothorax broader than long, narrower 

 in front, hind angles slightly prolonged, not carinate; elytra obsoletely sub- 

 striate ; prosternal sutures straight, but deeply impressed ; propleural triangle 

 broad, the outer side a little longer than the basal, the antennal groove deep, 

 limited externally by the margin of the thorax ; metasternum with an impressed 

 line beginning at the outer side of the middle coxte and extending directly 

 backward nearly to the posterior margin and becoming gradually finer, another 

 elevated line extends from the humeral angle of the metasternum and is directed 

 obli((uely backwards and inwards ; metastcrnal episterna narrow and parallel ; 

 posterior coxal plates triangularly dilated ; legs rather short, tarsi slender, the 

 first joint of the posterior nearly as long as the next four together, the fourth 

 joint simple ; claws simjjle. 



For the first time this genus as restricted by Bonvouloir is indi- 

 cated in our fauna. It resembles Deltometopus and Dromieolus in 

 many of its characters, but may be distinguished from either by the 

 metasternal characters and slender tarsi. 



One species is known in our fauna. 



E. aiiierioaua n. sp. — Piceous black, moderately shining, sparsely clothed 

 with short grayish pubescence, form oblong, slightly narrower posteriorly ; an- 

 tennje ferruginous brown, the first joint darker ; head convex, moderately densely 

 jiunctate, a distinct carina extending from the apical margin of the clyi^eus to the 

 occiput ; clypeus more coarsely punctate, very little narrowed at base and slightly 

 wider than the distance to the eyes ; thorax wider than long, narrower in front, 

 the sides feebly arcuate posteriorly, more so in front, disc convex, a slight de- 

 pression at middle posteriorly and feebly along the basal margin, surface rather 

 finely not densely punctate ; elytra vaguely substriate, the surface punctured 

 similarly to the thorax and somewhat rugose along the base, sutural stria fine and 

 entire ; body beneath rather coarsely but not densely punctured, the abdomen 

 rather more finely punctured ; last ventral segment obtuse at tip, a slight trans- 

 verse impression each side near the apical margin ; legs brownish. Length .24 

 inch ; 6 mm. 



The specimen from which the above descri])ti()n has been drawn is 

 in my cabinet, from near Mt. tShasta, California. There is a second 



