1905.] OF PHYTOPHAGOUS COLEOPTERA. 419 



surrounded and separated by very naii'ow spaces or bands of the 

 ground-colour ; under side and legs pale j^iceous ; claw-joint 

 moderately swollen. 



Hah. Bolivia ; also Brazil, 



Of this species I have seen a great many specimens of most 

 variable coloration, some of which have the elytral bands veiy 

 dark in regard to the basal and subapical ones, and the inter- 

 mediate baiids pale or absent altogether and entire or divided into 

 two spots as described here. It is possible that the species is 

 identical with A . alhida Schauf . 



Genus Oedionychis. 

 Elytra entirely pale-coloured or nearly so. 

 Oediokychis rotundicollis, sp. n. 



Broadly ovate, subdepressed, pale testaceous ; antennae and the 

 postei'ior femora obscure piceous ; sides of thorax strongly rounded , 

 broadly flattened, impunctate ; elytra extremely minutely 

 punctured. 



Length 8 millim. 



Head impunctate, frontal elevations transverse ; antenna? pale 

 piceous, the third joint slightly shorter than the fourth and 

 following joints ; thorax about twice and a half broader than 

 long, the sides strongly rounded and broadly flattened, the 

 anterior angles strongly pointed but scarcely dentiform, the 

 surface impunctate ; elytra broadly ovate, the margins narrowly 

 reflexed, the base with a very shallow depression, the surface 

 scarcely perceptibly ptuictured ; posterior femora pale piceous. 



Hah. Espirito fSanto, Brazil. 



The sides of the thorax in this species are more rounded than 

 in any of the unicolorous members of the genus with which I am 

 acquainted ; the elytra are likewise of more bi-oadly rounded shape 

 than usual. 



Oedionychis PAEAGUAVEiSiSis, sp. n. 



Short and convex, testaceous ; apical joints of the antennae 

 black ; thorax densely and strongly punctured, the sides not 

 deeply flattened ; elytra punctured like the thorax. 



Length 7 millim. 



Head somewhat closely punctured, frontal elevations oblique, 

 carina short and broad ; antennae scarcely extending to the middle 

 of the elytra, the lower three joints testaceous, the others black, 

 third and following joints nearly equal, rather elongate ; thorax 

 twice as broad as long, the lateral margins feebly but evenly 

 rounded, the anterior angles produced outwards into a small 

 tooth, the surface rugosely and rather strongly punctured, the 

 sides gradually and rathei' shallowly flattened ; scutellum black ; 

 elytra rather strongly convex below the middle, sculptured like 

 the thorax ; legs short and robust. 



