South American s2Jecies of Diahrotica. 41 



Var. A. Elytris pallide prasinis, vitta lata cliscoidali flava. 



Loug. 4 lin. 



Hah. BY&zil,^'^ Jiineiio {Squire, Fry). Coll. Jacoby, 

 Fry, and Baly. Var. A, coll. Fry. 



Head triangular ; clypeal ridge rather strongly raised ; antennae 

 filiform, nearly equal to the body m length, the second joint short, 

 moniliform, the third nearly twice its length, the fourth longer 

 than the preceding two united, the four lower joints fusco-flavous, 

 with a greenish tinge, the following four piceous, the three upper 

 ones piceo-flavous. Thorax about one-fourth broader than long; 

 sides nearly straight and parallel from the base to beyond the 

 middle, thence rounded and obliquely converging towards the 

 apex ; disk impressed with three shallow foveae. Elytra narrowly 

 oblong, scarcely dilated posteriorly, convex, plicate and strongly 

 carinate below the humeral callus, disk rather closely pimctured, 

 impressed with several faint longitudinal sulcations ; each elytron 

 with a narrow submarginal vitta, which covers the subhumeral 

 costa and extends downwards as far as the middle, and four small 

 spots, one basal common and three discoidal, one immediately 

 below the basal margin, another just before and a third immedi- 

 ately below the middle, nigro-piceous. 



The number and position of the dark markings on the 

 elytra appear to vary greatly ; in two specimens I have 

 seen they form two narrow interrupted linear fascias. 



Spec. 73. Diahrotica speciosa, Germ. 



Insect. Spec, p. 602, 1824 (Galeruca). 



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

 p. 228. 



Oblongo-ovata, postice pauUo ampliata, convexa, prasina, nitida, 

 Bcutello, tibiis tarsisque nigris, capite rufo-testaceo, antennis 

 extrorsum piceis, labro plerumque piceo aut nigro ; thorace longi- 

 tudine latiori, laevi, utrinque plus minusve distincte foveolato (inter- 

 dum laevi) ; elytris tenuiter pmictatis, utroque macuhs tribus, 

 prima ad basin, secunda prope medii;m tertiaque inter medium et 

 apieem positis, flavis ornatis. 



Var. A. Pectore rufo-testaceo, tibiis tarsisque fuscis aut nigris. 

 Diahrotica vigens, Erichs., Wiegm. Archiv., 1847, p. 147. 



Var. B. Capite (antennis exceptis) nigro, caeteris ut in tj^po ; 

 elytris suturae basi iuterdum nigro -lineata. Diahrotica Simoni, 

 Jac, Proc. Zool. Soc, 1889, p. 280. 



Var. C. Elytrorum maculis tlavis fere aut totis obsoletis, caeteris 

 ut in vars. B. and C. Diahrotica amabllis, Baly, I. c, p. 222 • 



