64 Mr. Joseph S. Baly on the 



scarcely dilated posteriorly; convex, distinctly but rather finely 

 punctured, the general surface obsoletely wrinkled; subhumeral 

 costa rather strongly raised, extending nearly to the apex of the 

 elytron. 



Spec. 111. Diahrotica internipta, Baly. 

 Trans. Ent. Soc. Lond., 1886, p. 445. 

 Hab. Amazons (Bates). My collection. 



Spec. 112. Diahrotica venezuelensis, Jacoby. 



Cist. Ent., iii., p. 45. 



Diahrotica virginella, Baly, Journ. Lin. Soc, xix., 

 p. 228. 



Hah. Venezuela. Coll. Jacoby and Baly. 



Spec. 113. Diahrotica rugulosa. 



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

 scutello capiteque nigris, antennis ad basin et ad apicem sordide 

 fulvis ; thorace sat profunde subarcuatim excavate ; elytris rugulosis, 

 ad latera plicatis, sulcis longitudinalibus obsolete impressis ; utroque 

 linea suturali, ante apicem abbreviata, lineaque elevata sublaterali, 

 a basi fere ad apicem extensa, nigris. 



Long. 3| lin. 



Hah. Brazil, St. Catharine. My collection. 



Head not longer than broad, triangular ; clypeus with a longi- 

 tudinal ridge ; antennae about three-fourths the length of the body, 

 filiform, the second joint short, ovate, the third more than one-half 

 longer, the fourth equal in length to the preceding two united ; the 

 three lower joints, together with the upper two, obscure fulvous. 

 Thorax nearly twice as broad as long ; sides slightly dilated and 

 rounded anteriorly, sinuate behind the middle ; above convex, the 

 hinder disk deeply excavated. Elytra oblong-ovate, slightly dilated 

 posteriorly, convex, irregularly but not deeply rugulose, rather 

 strongly piinctured, plicate below the humeral callus, the sub- 

 humeral costa raised, well-defined and extending beyond the 

 middle ; disk with four or five very shallow ill-defined longitudinal 

 sulcations ; each elytron with a narrow sutural line, abbreviated 

 towards the apex, and a linear submarginal vitta, which, com- 

 mencing at the base, runs along the subhumeral costa and extends 

 to some distance below the middle, black. 



