PROC. US. NAT. MUS. VOL. 121 



QUATE AND THOM PSON— PLATE t 



K^i»i^- 



^^^^ 



Heads of Melanotus species: a, similis; b, decumanus; c, castanipes; d, communis; e, vc-rberans; 

 f,lanei; g, pilosus; h, emissus; i, opacicolhs; j, depressus : k, Sagittarius; I, crihricollis; m, 

 tenax; n, par-allelus; n, infaustus; p, gradatus. 



