82 Mr. Joseph S. Baly on the 



basal portion of the fourth flavous, the ninth and tenth (this latter 

 joint sometimes excepted) white. Thorax about one-third broader 

 than long ; sides nearly straight and parallel from the base to just 

 beyond the middle, thence obliquely converging and slightly 

 rounded towards the apex ; disk convex, nitidous. Elytra rather 

 closely and distinctly punctiired, obsoletely sulcate below the 

 humeral callus. 



Spec. 151. Diahrotica atriscutata. 



Anguste ovata, convexa, postice ampliata, flava, nitida, pectore, 

 Bcutello, labro, oculis antennisque nigris, his ad basin flavis, ante 

 apicem flavo-albidis, articulo ultimo piceo ; thorace convexo, obso- 

 lete trifoveolato ; elytris ad latera plicatis, minute punctatis, sutura 

 ante medium obsolete piceo-marginata. 



Long. 3 lin. 



Hah. Amazons (Bates). A single specimen in my 

 collection. 



Head triangular, not longer than broad ; clypeal ridge entire, 

 not well-defined ; antennae nearly equal to the body in length, 

 filiform, the second and third joints short, nearly equal, the fourth 

 longer than the preceding two united ; the three lower joints 

 flavous, the fourth to the eighth black, the two following ones 

 yellowish white, the eleventh piceous. Thorax rather more than 

 one-third broader than long; sides rounded anteriorly, sinuate 

 behind the middle ; disk moderately convex, faintly impressed on 

 either side and again just before the middle of the basal margin 

 with a small shallow fovea. Elytra narrowly oblong, slightly 

 dilated posteriorly, moderately convex, plicate laterally, the sub- 

 humeral costa well-defined and extending downwards for some 

 distance below the middle ; surface minutely punctured, the basal 

 third of the suture obsoletely edged with nigro-piceous. 



Spec. 152. Diahrotica cegrota. 



Proc. Zool. Soc, 1889, p. 94. 



Oblongo-ovata, postice ampliata, convexa, subtus flava, nitida, 

 pectore, ano tibiis tarsisque nigris ; supra subnitida, pallide viridi- 

 flava, scutello capiteque nigris, antennis ad basin piceis, ante api- 

 cem flavo-albidis ; thorace longitudine latiori, lateribus fere rectis, 

 reflexo-marginatis, disco transversim convexo, Isevi ; elytris crebre 

 punctatis, subrugulosis. 



Long. 4 lin. 



Hah. Ecuador {Buckley), My collection; a single 

 specimen. 



