550 PHYTOPHAGA. 



Head with a few fine punctures on the vertex, the sides of the clypeus more strongly punctured, rufous ; 

 labrum flavous ; antennas flavous, the three or four apical joints obscure fuscous, the third joint twice the 

 length of the second ; thorax one half broader than long, flavous, the disc with a transverse depression (in 

 the shape of a curved groove), impunctate ; scutellum piceous ; elytra strongly dilated posteriorly, rather 

 convex, very closely punctured, the anterior rufous band extending nearly to the middle, the posterior 

 band of equal width (both bands interrupted at the extreme lateral margin) ; breast piceous, the abdomen 

 and legs flavous. 



Hab. Panama, Bugaba (Champion). 



In the specimen figured the thorax is slightly stained with greenish. The broad 

 rufous elytral bands principally distinguish D. rufo-fasciata. 



110. Diabrotica dorso-plagiata. (Tab. XXXII. fig. 24, var.) 



Flavous, the tibise and tarsi piceous ; thorax very finely punctured, without depressions ; elytra very closely 

 punctured, more or less obsoletely longitudinally sulcate, the suture, the base narrowly, a narrow trans- 

 verse band before the middle, and a second band beyond the middle (the bands connected at the sides 

 with a lateral stripe starting from the base), dark fulvous. 



Var. The lateral elytral stripe extending to the suture near the apex ; the tibiae flavous. 



Length 3-3J lines. 



Antennse more than half the length of the body in the male, the apical joints sometimes fuscous, the third joint 

 twice the length of the second ; thorax subquadrate, slightly narrowed near the base, the surface without 

 depressions, very finely and closely punctured ; elytra extremely closely punctured, with some obsolete 

 longitudinal sulcations, the sides below the shoulder marked by a more or less distinct short costa, the 

 surface of each divided into three large flavous spaces by the narrow transverse dark fulvous bands, the 

 fulvous lateral stripe extending from the base to the second transverse band, the apices remaining of the 

 ground-colour. 



Hab. Guatemala, Capetillo, Cerro Zunil, Panajachel (Champion)', Costa Kica, 

 Volcan de Irazu (Bogers). 



In the variety (a single specimen from Costa Rica) the three testaceous spaces of the 

 elytra are closed at the sides by the lateral longitudinal stripe curving round to the 

 sutural margin near the apex ; in the Guatemalan examples the corresponding lateral 

 stripe ends at the second transverse band. In all the specimens the two elytral bands 

 are slightly oblique. The subquadrate and finely punctured thorax is another character 

 peculiar to D. dorso-plagiata. 



An example of the variety from Irazu is figured. 



ill. Diabrotica lsevicollis. (Tab. xxxii. fig. 4, var.) 



Broadly ovate, subdepressed, black, the head rufous; thorax rufous, with two black spots, trifoveolate ; 

 elytra fulvous, finely rugose, each with two spots at the base, two near the apex, and a transverse band 

 at the middle, black ; legs testaceous. 



Var. The elytral spots more or less confluent. 



Length 3|-4 lines. 



Head impunctate, rufous or fulvous ; antennae obscure fulvous, the basal joints sometimes stained with piceous, 

 the third joint more than twice the length of the second ; thorax one half broader than long, rather 

 flattened, with three fovese and a central longitudinal groove (the groove sometimes obsolete), the disc 

 impunctate, a black spot on each side above the lateral fovese ; scutellum black ; elytra broad, subde- 

 pressed, widened posteriorly, finely rugose throughout, each with two elongate spots (placed transversely) 



