298 aEO. H. HORN, m. d. 



The species are as follows : 



lutercoxal process broad, obtuse. 



Elytra narrowly margined. Posterior femora % simple ovata. 



Elytra widely margined. Posterior femora % obtusely subangulate. 



peltoides. 

 Intereoxal process triangular, more or less acute. 



Last joint of antennae larger than the preceding sestiva. 



Last joint of antennae narrower and smaller than the preceding. 

 Elytra rounded or truncate at tip. 

 Thoracic margin rather narrowly explanate, hind angles distinct. 



Thorax regularly arcuately narrowed from base to apex labilis. 



Thorax widest in front of middle uiiibroKa. 



Thoracic margin widely explanate, hind angles obtuse. ..obtusicollis. 

 Elytra conjointly emarginate at tip. 

 Margins of thorax and elytra widely reflexed ^caplioitlcs. 



E. ovata n. sp. — Oval, piceous, moderately shining, sparsely clothed with 

 short greyish pubescence. Head piceo-rufous, moderately densely punctulate. 

 Antennae rufous, club piceous, structure aa in monogama. Thorax twice as 

 wide as long, apex narrower than base and deeply emarginate, sides strongly 

 arcuate, suddenly sinuate posteriorly, hind angles rectangular and slightly 

 prominent, margin widely explanate and moderately reflexed, base on each 

 side sinuate, surface piceo-rufous, moderately densely punctate. Elytra piceous, 

 margin paler, very little longer than wide at base, sides arcuate and gradually 

 narrowing to the apices which are conjointly rounded, margin narrowly re- 

 flexed, surface moderately densely punctate. Body beneath densely punctured. 

 Legs piceous, femora moderately densely punctate. Intereoxal process broadly 

 oval. Length .10 — .12 inch; 2.5 — 3 mm. 



The middle tibiae of the male are absolutely simple and not stouter 

 tliaii the corresponding portions of the female. 



This species might be mistaken for a diminutive helvola^ but besides 

 its smaller size the sides of the thorax more suddenly sinuate pos- 

 teriorly, the apices of the elytra not truncate and the sexual char- 

 acters of the male will serve to disinguish it. 



Occurs in Michigan, (Schwarz), Canada, (Pettit), and California, 

 (Crotch). 



E. peItoi<les n. sp. — Rather broadly oval, piceous, elytra maculate, moder- 

 ately shining, very sparsely pubescent. Head piceo-testaceous, sparsely punc- 

 tate. Antennae rufous, club darker, structure as in monogavia. Thorax twice 

 as wide as long, narrower in front, apex deeply emarginate, base feebly sinuale 

 on each side, sides rather strongly arcuate, at basal third subparallel and feebly 

 sinuate, hind angles rectangular, margin broadly explanate and moderately 

 reflexed, disc convex rather sparsely punctate, color piceous, margin broadly 

 median line narrowly testaceous. Elytra nearly as wide as long, sides gradu- 

 ally arcuately narrowing, margin broadly explanate and moderately reflexed, 

 apex rotundato-truncate, disc moderately convex, punctured like the thorax, 

 color piceous, margin and four oval, badly defined paler spots on each side 



