NORTH AMERICAN COLEOPTERA. 15 



Unrecognized Species. 



E. ignobilis Boh. Eug. Resa, p. 68. 



E. rufipes Beauv. Ins. p. 214, pi. 9, fig. 9. 



The localities given for the species collected during the Eugenies Resa are not 

 reliable in all cases, and the species may be from any other region than California. 

 E. rufipes is too briefly described fo make its recognition certain. 



AGRIOTES Esch. 



The occurrence of several new species affords an opportunity for a 

 renewed study of the genus in which greater stress is laid on structural 

 characters and less on color and other variable qualities. 



Hind coxal plates very gradually dilated internally and not twice broader at 



inner third than externally 2. 



Hind coxal plates rather suddenly dilated within, usually more than twice as 



broad at inner third as externally 10. 



2. — Mandibles robust, the tip broad, chisel-shaped; form robust; thorax very con- 

 vex, coarsely and densely punctured ; 7-9 mm. Atlantic States and Canada. 



1. maiicus. 



Mandibles much more slender, tips sub-acute 3. 



3.— Prothorax similarly, usually coarsely punctured over the entire surface 4. 



Prothorax coarsely punctured in front, very finely punctulate posteriorly ; 

 color variable, usually piceous, often with elytra dull red ; 8-11 mm. Can. 



and Lake Superior 2. stabilis. 



'4. — Antennae with joints 2-3 each distinctly shorter than joint 4 5. 



Antennse with joints 2-3 each equal in length to joint 4 and scarcely narrower. 9. 



5. — Lateral margin of thorax distinct in its entire length 6- 



Lateral margin of thorax obliterated except near the hind angles 8. 



0. — Hind angles of thorax very distinctly carinate 7. 



Hind angles of thorax not perceptibly carinate ; color pale brown with grayish 



pubescence; 7-8 mm. Mass., Illinois, Kansas and Texas 3. iusanus. 



7. — Variable in color, sometimes entirely piceous, or with the sides of thorax dark 

 red, again with the elytra ferruginous, or entirely ferruginous; 9-12 mm. 

 N. E. States, through Canada to Hudson's Bay, British Columbia, Oregon, 



California 4. TucosiiS. 



Thorax much less convex than in/Hco.s-M.«, the punctuation less coarse and dis- 

 tinct, not crowded ; color piceous, elytra dark ferruginous, legs pale ; 10 mm. 



Oregon 5. rerriigineipennis. 



8. — Parallel, thorax very coarsely and densely punctured; color variable, often 

 entirely piceous usually with ferruginous elytra ; 7-9 mm. California. 



6. iniperfectus. 

 Form slender, piceous, thorax sparsely punctate ; 6.5-7.5 mm. Oregon. 



7. sparsiis. 



9. — Lateral margin of thorax indistinct in the middle of its length and very much 



deflexed in front : abdomen rather sparsely punctate ; 9 mm. Pennsylvania 



and Ohio 8. pnbescens. 



Lateral margin of thorax sharply defined in its entire length ; abdomen 

 densely punctulate; thorax piceous, elytra ferruginous; 8.5 mm. New- 

 foundland. N. H. and Canada 9. limosus. 



