62 Mr. Joseph S. Baly on the 



three lower ones sometimes nigro-piceous. Thorax nearly one- 

 half broader than long ; sides nearly parallel and sinuate from the 

 base to beyond the middle, thence obliquely rounded towards the 

 apex, the anterior angles obtuse, the hinder ones slightly pro- 

 duced, subacute ; above convex, disk with a large ill-defined 

 excavation, which is impressed scarcely behind the middle 

 with two large deep foveas, separated from each other by a 

 narrow line, each fovea stained with a piceous spot ; surface 

 shining, impunctate. Elytra narrowly oblong, slightly dilated 

 posteriorly, their apices regularly roinided ; above convex, finely 

 but distinctly punctured, plicate below the humeral callus, sub- 

 humeral costa extending below the middle. 



Spec. 108. Diahrotica nitidicollis. 

 Proc. Zool. Soc, 1889, p. 92. 



Subelongato-ovata, postice pauUo ampliata, convexa, flava, 

 nitida, pectore scutello capiteque nigris, antennarum apice flavo ; 

 thorace convexo, Isevi, fulvo-rufo ; elytris sat crebre punctatis, ad 

 latera plicatis, costa subhumerali longe pone medium extensa ; 

 iitroque linea suturali fere ad apicem extensa, linea humerali 

 ante apicem abbreviata maculaque parva discoidali pone medium 

 posita, nigris. 



Var. A. Elytrorum macula discoidali obsoleta. 



Long. 2i— 3 lin. 



Hah. Brazil, Eio Janeiro {Fry). Coll. Fry and Baly. 



Head triangular, not broader than long ; clypeus with a well- 

 defined longitvidinal ridge ; antennas filiform, three-fourths the 

 length of the body, the second joint short, the third distinctly 

 longer, the fourth rather longer than the preceding two united ; 

 the three upper joints pale flavous, the second and thu-d piceous. 

 Thorax nearly one-half broader than long ; sides parallel and 

 slightly sinuate from the base to the middle, thence rounded and 

 converging towards the apex; upper surface convex, shining, im- 

 punctate. Elytra oblong-ovate, slightly dilated posteriorly, their 

 apices rather broadly rounded ; above convex, distinctly and 

 rather closely punctured, very faintly wrinkled, plicate below the 

 humeral callus, subhumeral costa distinctly elevated and extending 

 downwards to more than half-way between the middle and apex. 



Separate from D. picco-signata by the non-foveolate 

 thorax. 



