48 Mr. Joseph S. Baly on the 



faintly sinuate from the base to the middle, obsoletely dilated and 

 rounded anteriorly ; above convex, hinder two-thirds of disk 

 broadly excavated, more or less distinctly trifoveolate. Elytra 

 oblong-ovate, dilated posteriorly, convex, plicate below the humeral 

 callus ; surface closely and distinctly punctured. 



After a careful examination, of a long series of this 

 variable species I cannot separate D. lineolata, Kirsch 

 (the type-specimen of which, through the kindness of 

 the author, I have before me) as a distinct specific form. 

 The head varies in colour from entirely black to entirely 

 flavous ] the antennae are also equally variable in tint. 

 Dr. Kirsch lays stress on the absence of the discoidal 

 foveae of the thorax in his insect, but in the specimen 

 before me they, although faint, are distinctly visible 

 under a lens. Erichson only gives the thorax as bi- 

 foveolate, the third fovea is always less distinctly defined 

 than the others and in some specimens possibly entirely 

 obsolete. 



D. septemliturata is separated from D. Clarkella by its 

 smaller size, and by the difference in the sculpturing of 

 the thorax. It is also much more variable in the 

 pattern of its elytra than that species. 



Spec. 85. Diahrotica Di/soni, Baly. 



Journ. Ent. Soc, 1886, xix., p. 217. 



Hah. Colombia; my collection. A single specimen. 



D. Dysoni may be known by the form of the elytral 

 markings, which are broad and of equal width through- 

 out, their apices being abruptly truncate. 



Spec. 86. Diahrotica sedata. 



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

 pectore, oculis antennisque nigris, his ad basin piceis, apice sordide 

 flavo ; thorace leviter trifoveolato ; elytris subnitidis, sat crebre 

 punctatis, ad latera leviter plicatis, disco sulcis nonnnllis longi- 

 tudinalibus obsolete impresso ; utroque vittis brevibus basalibus 

 duabus, una communi, altera humerali, vittulisque duabus longe 

 pone medium oblique transversim positis, nigris. 



Long. 3i lin. 



Hah. Brazil ; also Guatemala My collection. 

 Head slightly longer than broad ; labrum pale piceous ; c'ypeal 

 ridge strongly raised, terminating before reaching the anterior 



