BY T. G. SLOANE. 419 



4. (7) Posterior marginal puncture of prothorax in lateral channel a little 

 before basal angle. 



*5.(6)Elytra strongly striate; head metallic 12.iV. phdus Cast. 



6. (5)Elytra faintly striate; head black 13.JV. ttuuistriatus SI. 



7.(4)Posterior marginal puncture of prothorax at basal angle. 



8 (9)Anterior tarsi with three basal joints not dilatate or squamulose 



beneath in S 14. N. peroni Cast. 



9. (8) Anterior tarsi with three basal joints dilatate and squamulose beneath 



in 6 15.iV. muelhri SI. 



10.(3)Heud small; interstices of elytra depressed at apex 



16.iV. sphodroides Dej. 



ll.l2)Prothorax subquadrate, decidedly wider at base than apex. 

 12.(17)Upper surface depressed; prothorax with sides oblique towards 

 base. 



13.(14)Basal angles of prothorax rectangular 17. N. angulosus SI. 



14.(13)Basal angles of prothorax obtuse. 



15.(16)Third interstice of elytra ordinary 18. N. politidus Chaud. 



16. (15)Third interstice of elytra greatly swollen at position of posterior 



marginal puncture 19. N. tubtricaudus Bates. 



17(12)Upper surface convex ; prothorax with sides strongly rounded 

 towards base. (Posterior marginal puncture more distant from base 



than usual) 20.iV. kosciuskoanus SI. 



18.(l)Pronotum with lateral channel narrow at basal angle and extending 



to lateral basal impression. 

 19.(26)Prothorax with basal angles marked. 

 20. (23)Head and pronotum metallic. 



21.(22)Posterior marginal puncture of prothorax at basal angle 



21.2V. opulentus Cast. 



22.(21)Posterior marginal puncture of prothorax a little before basal angle 



22.2V. mttallicus&l. 



23. (20) Head and pronotum black. 



24.(25)Size large (16-21 mm.); prothorax lightly rounded on sides and 



lightly narrowed to base; elytra with eighth interstice convex 



24. N. variicollis Chaud. 



25.(24)Size small (13 mm.); prothorax strongly rounded on sides and de- 

 cidedly narrowed to base; elytra with eighth interstice depressed... 



25. N. carteri SI. 



26.(19)Prothorax with basal angles rounded off. 



27.(28)Prothorax subcordate 26.N. arthuri SI. 



28.(27)Prothorax short, widest at middle, strongly and evenly rounded on 

 sides 27.2V. taylori SI. 



12. A", plutus Cast.,( = N.frenchi SI.). — I collected numbers of 

 a species of Notonomus, identical with that on which I founded 



