6 Mr. Joseph S. Baly on the 



Central America, Guatemala. My collection, that of 

 the Belgian Museum and Mr. Jacoby. 



The broader and more regularly oval form separates 

 this species from any other belonging to the present 

 group. 



Spec. 2. Diahrotica consentanea, Baly. 



Lin. Soc. Journ., xix., p. 214. 



Hab. Colombia ; also the Upper Amazons and Ecuador. 

 Var. A. My collection. 



This insect nearly equals D. regalis in size, but is 

 narrower and more elongate. In my former paper I drew 

 up my diagnosis on a specimen in which the two medial 

 spots on the elytron were confluent, forming a transverse 

 band, I have since received other specimens in which 

 the band is divided into two distinct spots, as in D. 

 regalis ; this is doubtless the normal coloration of the 

 species. 



Spec. 3. Diahrotica gratiosa, Baly. 



Lin. Soc. Journ., xix., p. 215 ; Jac, Biol., I. c, 

 p. 504, tab. xxviii., fig. 22. 



Hah. Colombia, Cauca ; also Central America, 

 Nicaragua. Coll. Baly {type) and Jacoby. 



D. gratiosa closely resembles elegantula ; the thorax 

 in the present species is convex, the deep fovea on 

 either side being replaced by a small puncture, only 

 visible when viewed sideways under a lens. It is also 

 separated by the rounded, not plicate, sides of the 

 elytra. 



Spec. 4. Diahrotica Lacordairei, Kirsch. 



Berl. Ent. Zeit., 1883, p. 199. 



Diahrotica morosa, Jacoby, Biol. C. Amer., pt. vi., 

 p. 503, pi. xxviii., fig. 19. 



Ovata, postice ampliata, convexa, flavo-albida aut flava, nitida, 

 pedibus femoribus, ad basin exceptis, pectore, scutello capiteque 

 nigris, antennarum articulis tribus ultimis, ultimi apice excepto, 

 albidis ; thorace couvexo, laevi ; elytris tenuiter punctatis, nigris, 

 utroque maculis subbasalibus duabus, transversim positis, fascia 

 lata vix pone medium, utrinque abbreviata, maculaque subapicali, 

 albidis ant pallide flavis. 



