278 GEO. H. HORN, M. D. 



13.— Surface always more or less alutaceous, the thorax always so ; form rather 



elongate ; humeri not prominent 16. 



Surface entirely shining; form robust, the humeri well marked and rather 



prominent; elytral punctuation rather coarse in all the species 14. 



14. — Color rufoferruginous; surface of thorax sparsely, finely and indistinctly 



punctate 12. alteriiatus. 



Color brownish, or nearly piceous; thorax rather coarsely punctate l.^i. 



15. — Abdomen of similar color to the upper surface; posterior femora piceous 



brown and distinctly punctate 13. inoiitivagiis. 



Abdomen piceous, nearly black; legs entirely piceous 14. erro. 



Abdomen paler than the upper surface ; posterior femora yellowish and not 



distinctly punctate 15. pygniseiis. 



16. — Elytra not shining, the punctuation very indistinct; color yellowish testa- 

 ceous 16. testaceus. 



Elytra shining, punctuation coarse and well marked; color from nearly 



piceous to dark rufotestaceous 17. inelaiiiiru!^. 



17. — Elytra covering the entire abdomen, or at most with merely the tip of the 



pygidium exposed 18. 



Elytra broadly rotundato-truiicate. leaving rather more than the pygidium 



exposed 19. 



18.- -Testaceous, or brownish testaceous, without metallic lustre. 

 Elytra not very coarsely punctate. 

 Thorax distinctly punctate, the punctures nearly as coarse as those of 



the elytra 18. riif'esveiis. 



Thorax indistinctly punctate, or nearly smooth; elytral punctures 



coarser than those of rufescens 19. iiisolens. 



Elytra with coarse, deep, close punctures, with an apparent substriate 

 arrangement. 



Thorax with scattered, coarse, deep punctures 20. porrorattis. 



Piceous, with or without metallic lustre; sutural angles rounded. 

 Surface without metallic lustre ; punctures of elytra nearly as coarse at 



apex as at base; species minute 21. soliflagiiiis. 



Surface with distinct metallic lustre; punctures of elytra much less dis- 

 tinct at apex ; species larger.. 22 iiitidelliis. 



19. — Surface shining, slightly metallic ; punctuation very sparse and feebly 

 impressed 23. inaiicus. 



1. Li. Heliopliyti u. sp.— Oblong oval, convex, rufotestaceous, shining, 

 each elytron with a fuscous cloud at middle. Antennse with four basal and three 

 apical joints rufotestaceous, the intermediate joints fuscous. Head smooth, 

 shining. Thorax one-fourth wider than long, not narrowed in front, sides 

 slightly sinuous, obliquely truncate at front angles with distinct post-apical an- 

 gulation, basal marginal line entire, distinctly impressed at middle, disc convex, 

 smooth. Elytra much wider at base than the thorax, humeri obtusely promi- 

 nent, umbone moderately prominent, sutural angles distinct, but obtuse, disc 

 convex, sparsely, finely and indistinctly punctate, but absolutely smooth at apex. 

 Body beneath and posterior femora a little darker than above. Abdomen sparsely 

 punctate. Legs pale rufotestaceous. Length .08 inch. ; 2 mm. 



