NORTH AMERICAN COLEOPTERA. i) 



2. — Antennae and legs reddish brown, prothorax equally punctured, antennae 

 slender, second joint not very small, third shorter than fourth; 9 mm. 



Middle and Western States and Canada 1. hepaticus. 



Antennae and legs dull red, prothorax coarsely punctured, antennae with broad 

 joints, the second very small, third as long as fourth ; 14 mm. Texas. 



2. insignis. 



.3. — Prothorax finely densely punctured; antennae, legs and under side of body 



reddish brown or ferruginous ; 1 2.5 mm. Oregon, California and Vancouver. 



3. rhodopits. 



4. — Black, prothorax above and beneath bright red ; antennae with third joint as 



long as fourth, triangular in male, narrow in female; 6.5-8 mm. Southern 



California 4. fasttis. 



Red, head, elytra and propectus black; antennae brown, strongly serrate, third 

 joint (male) equal to fourth ; prothorax more densely punctured ; 8 mm. 



New Mexico 5. rubriventris. 



5. — Prothorax and flanks, legs and elytra dull yellow ; elytra with an apical black 

 space; antennae black brown, third joint but little longer than second; 7.5 



mm. Nevada 6. partitus. 



Dull yellow, head, scutel, postpectus and antennae black, the last with third 

 joint but little longer than second; 7 mm. California 7. ineliniis. 



B. — Hind angles of thorax unicarinate. 



Prothorax clothed with stiff erect hair 2. 



Pubescence much inclined 5. 



2. — Prothorax shining 3. 



Prothorax opaque, densely punctured. 



Entirely black ; 11mm. Florida 8. Sturinii. 



Elytra red, apical third black; 7-8.5 mm. California 9. Phelpsii. 



3. —Elytra half red, half black; 6 mrn. California 10. Horiii. 



Elytra red with apical space black. 



Pubescence yelliow ; 8 mm. California 11. cordatus. 



Pubescence black. 



Elytra scarlet with apical third black, the black space attaining the side 



margin and apex; 8.5 mm. California, Vancouver 12. Behrensi. 



Elytra scarlet with apical cordiform black spot which attains the apex but 



not side margin ; 8-10 mm. California 13. cordiTer. 



Entire surface black; 8.5 ram. Colorado 14. ater. 



5. —Antennae feebly serrate, joints longer than wide, outer angles not acute 6. 



Antennae strongly serrate, joints not longer than wide, outer angles acute....! 0. 



6.— Dark brown, pubescence coarse; prothorax equably deeply punctured 7. 



Black, finely pubescent ; prothorax more finely and sparsely punctured behind. 8. 



Elytra more or less brownish red, or spotted 9. 



7.— Cuneiform, more strongly punctured ; antennae as long as the prothorax ; hind 

 angles of latter divergent; S-11.5 mm. Canada to Texas. 



15. nianipularis. 

 Linear, very elongate; prothorax with hind angles diverging; antenna? much 



longer than prothorax; 9 mm. California Ifi. loiigicoriiis. 



8.— Third joint of antennae nearly as long as the fourth ; antenna and legs nearly 

 black ; thorax very sparsely punctate ; 7.25 mm. Alaska. 



17. carbon ieolor. 



TRANS. AMER. ENT. SOC. XII. 



(3) NOVEMBER, 1884. 



