AMERICAN COLEOPTERA. 381 



beyond the middle) and two spots on each (one before the middle, one sub-api- 

 cal) yellow. L. -12 inch. 



% , head and thorax entirely rufous. 



Illinois, Massachusetts. 



77. venustula, Muls. (p. 671, 16), appears to be a male of this spe- 

 cies with the marginal band divided. 



H. Hornii, sp. n.— 9 .—Closely allied to H. undulata, but smaller, shorter 

 and rounder, more finely punctate, elytra with a straight margin for two- 

 thirds, a discoidal spot (much nearer the base than in undulata), and a trian- 

 gular sub-apical spot yellow. L. -8 inch. 

 California. (Horn.) 



H. undulata* (Say) Journ. Phil, iv., 92; elegans, Muls. Trim., p. 658.— 

 Oval, convex, shining, black, punctate, legs red (femora infuscate) ; ventral 

 segments faintly punctate; thorax with the sides yellow; elytra each with 

 four yellow spots (three marginal, often connected, one discoidal). L. -10 inch. 



% , head and front of thorax yellow. 



Pennsylvania, Canada, Vermont, Massachusetts, Illinois. 



Var. ? 4-oculata.— Elytra with the discoidal and apical spots alone visi- 

 ble; other specimens from California show the two marginal spots, though re- 

 duced in size. L. -10 inch. 

 California. 



H. niwrens, (Lee.) Lake Sup., p. 238; consimilis, Lee. Proc. Phil, vi., 134, 

 6. — ?. — Ovate, sub-depressed, black, shining, punctate; thorax with the sides 

 yellow; elytra with the margin, a basal spot and a discoidal vitta beyond the 

 middle, yellow. L. -9 — -10 inch. 



Lake Superior. Leconte has made this the type of a new genus 

 Oxynychus, characterized by the simple claws, but I fail to see any 

 sharp line of demarcation in this respect ; in fact the basal dent is 

 very difficult to observe in the more depressed species. H. consimilis 

 is clearly only a brightly colored specimen of this species, the original 

 specimens were all dark varieties in which only traces of the markings 



H. annexa, Lee. Proc. Phil, vi., 133, 4. — Ovate, sub-depressed, black, 

 closely punctate, shining : sides of thorax, elytra with the margin and a dorsal 

 vitta yellow; this viita starts from the base and is united with the marginal 

 vitta at the apex. L. -10 inch. 



£, , head yellow, vitta broader. 



Vars. quadrivittata, Lee. 1. c. n. 5. — Dorsal vitta narrow, not reaching the 

 base, or joining the margin alone. 



San Francisco, Kansas, Illinois. 



Variable, one male has the thorax entirely rufous. 



TRANS. AMER. EM . (49) 



