28 Mr. Joseph S. Baly o7i the 



white, the rest black. Thorax about one-half broader than long ; 

 sides slightly diverging and faintly sinuate from the base to the 

 middle, thence rounded and converging towards the apex ; disk 

 convex, smooth, impunctate. Elytra subquadrate, ovate, broadly 

 dilated posteriorly, their apices broadlj' rounded ; upper surface 

 strongly convex, faintly excavated transversely below the basilar 

 space, rather coarsely and somewhat closelj' punctured. 



Spec. 41. Diabrotica decempunctata, Latr. 

 Latr., Voy. Humb., ii , 1833, p. 21, tab. 39, fig. 9. 

 Var. A. Elytris immaculatis. Diabrotica placida, Baly, Journ. 

 Lin. Soc, xix., 1886, p. 220. 



Hab. Colombia. In most collections. 



Since the description was published I have come to 

 the conclusion that D. 'placida, milii, cannot be separated 

 from D. 10-punctata. 



Spec. 42. Diabrotica centralis, Jac. 



Cist. Ent , iii., p. 46. 



Diabrotica histrionica, Baly, Journ. Lin. Soc, xix., 

 p. 215. 



Hab. Colombia, Venezuela. Coll. Jacoby and Baly. 



When describing the present insect I overlooked Mr. 

 Jacoby's diagnosis. 



Spec. 43. Diabrotica spilota, Baly. 

 L. c, p. 216. 

 Hab. Columbia. My collection. 



Spec. 44. Diabrotica Klugii, Baly. 

 L.c, p. 258. 

 Hab. Colombia. My collection. 



Spec. 45. Diabrotica duplicata, Jacoby. 

 Biol. Cent. Amer. Coleopt., pt. i., p, 519, tab. xxx., 

 fig. 7. 



Subelongata, postice paullo ampliata, convexa, flava aut fulvo- 

 flava, nitida, pectore capiteque nigris, vertice interdum nigro-piceo, 

 antenuis fusco-fulvis ad apicem pallidioribus ; thorace Isevi, disco 



I 



