450 MR. MARTIN JACOBY ON NEW SPECIES [N"oV. 28, 



scutellum black ; elytra of elongate shape, minutely and obsoletely 

 punctured, flavous ; the suture and a discoidal longitudinal stripe, 

 both abbreviated near the apex, black ; under side obscure blackish, 

 the legs dark fulvous, the tibise rather darker, prosternum pale. 



Hah. Tasco, Mexico. 



Of this species, one of the most elongated of the genus, I 

 received a single specimen from M. Donckier of Paris ; the 

 elytral sutural sti-ipe is of narrower shape than the discoidal one. 



Elytra blue or hlack, vntli flavous lateral and apical margins. 



Oedionyohis cinctipennis, sp. n. 



The head, breast, and legs black ; thorax fulvous, impunctate ; 

 elytra convex, widened posteiiorly, metallic blue, closely and 

 distinctly punctured, the lateral and apical margins fulvous ; 

 abdomen partly flaA'ous. 



Length 7 millim. 



Strongly convex and widened posteriorly ; the head black with 

 bluish gloss, with a few punctures near the eyes ; antennae black, 

 the lower three joints fulvous below, third and fourth joints equal ; 

 thorax with the lateral margins strongly rounded anterioi'lj'', the 

 sides broadly flattened, the disc convex, impunctate, fulvous ; 

 scutellum black ; elytra widened below the middle, with a short 

 but deep depression within the shoulders, very closely and rather 

 strongly punctured, metallic blue, the lateral margins narrowly 

 and the apex rather more broadly so, fulvous ; under side and legs 

 black, the sides of the abdomen more or less fulvous or flaTOus. 



Hah. Peru. 



From other similarly coloured species, the present one is dis- 

 tinguished by the posteriorly widened shape and the distinct and 

 close punctuation of the elytra ; the latter have in some specimens 

 a very small fulvous spot placed near the suture at the middle, 

 the fulvous margin widens slightly and gradually near the apex, 

 the latter part is also entire, not serrulate as in 0. sagulata 

 Erichs. 



Oedionyohis pallidicincta, sp. n. 



Obscure piceous below, the thorax and legs flavous ; tibias and 

 tarsi and the apex of the posterior femora black ; thorax impunc- 

 tate ; elytra black, entii-ely impunctate, the extreme lateral and 

 the apical margins more broadly, flavous. 



Length 5| millim. 



Of I'ather flattened shape ; the head neai'ly black, impunctate, 

 deeply transversely grooved between the eyes, the latter very 

 large, frontal elevations broad, transvei-se ; antennae rather 

 robust, black, the lower two joints and the last one fulvous, 

 third and fourth joints equal ; thorax twice as broad as long, the 

 sides rather rounded, deeply sulcate, with strongly reflexed and 

 thickened margins, the anterior angles not produced, the svirface 



