NORTH AMERICAN COLEOl'TERA. 253 



The species as defined above occurs from Maine to Iowa, south- 

 ward to North Carolina and possibly Georgia. 



Species 38 — 44. 



In this series the clypeus is flat, deeply emarginate, margin nar- 

 rowly reflexed, surface very densely punctured. The thorax is ob- 

 tusely angulate at the sides, narrowed toward the base as well as the 

 apex, the margin serrate. The elytral costre are well marked, except 

 in scitula and infidelk. The thoracic punctuation is usually coarse. 



The species are difficult to separate, but the following sketch will 

 assist : 



Fixed spur of bind tibi* % very sbort ; tborax not rugose, the elytra witbout 



COStJB 



38. iiifitlelis. 



Fixed spur of bind tibia? % of normal lengtb, or even as long as tbe free spur. 

 Penultimate ventral % witb a transverse, more or less rugose elevation. 



Tbe transverse elevation in tbe form of a ridge a little in front of tbe poste- 

 rior border ; last ventral depressed, witb granular elevations ; fixed spur 



of male very lon^ 



39. liictiioj^a. 



The transverse elevation formed by tbe apparent thickening or elevation of 

 the posterior border of the penultimate segment : fixed spur shorter than 



tbe outer 



.40. corrosa. 



Penultimate ventral % broadly impressed at middle, forming an oblique de- 

 clivity, on each side of which is an obtuse elevation. 

 Tborax densely and confluently punctured. 



Elytral costse entirely obliterated ; form rather elongate ; punctures of 

 tborax with a tendency to become transversely confluent. 



41. scitula. 

 Elytral costs feeble, but distinct ; form rather robust ; thoracic punc- 

 tures irregularly confluent -!-• Knocliii. 



Thoracic punctures coarse and close, but not confluent; costa? of elytra 

 moderately distinct, tbe submarginal distinct in apical half. 

 Punctures of tborax dense and regularly placed, tbe disc not very 



convex 43. profiiiula. 



Punctures of thorax close, but somewhat irregular, the disc nioder- 



atelv convex. 



.44. riisosa. 



38 L,. iiilUlelis n. sp.— Oblong-oval, broader behind, convex, chestnut- 

 brown head and tborax darker, shining. Clypeus moderately deeply emarginate, 

 rather more acutely in the female, margin narrowly reflexed, rather coarsely 

 densely punctured, front less densely punctured. Thorax distinctly narrower 

 in front, sides obtusely angulate, widest at middle, narrowed to base, more ob- 

 liquelv narrowed in front, margin irregular, scarcely crenate, sparsely ciliate, 

 disc convex, the punctures moderately coai-se not closely placed, slightly irregular 

 in distribution, an indistinctly defined, smooth, median space, a distinct depres- 

 sion of the basal margin externally. Elytra gradually wider from the humeri, 

 the punctures finer than those of tbe tborax, moderately ck«e near tbe base. 



