PHYTOPHAGOUS COLEOPTEKA FROM NEW GUINEA 483 



of which I possess a typical (female) example. Our knowledge 

 so far of these very numerous and extremely closely allied 

 forms of the genus Haltica is very limited, even as regard the 

 European species and no certain determination of the exotic 

 species is possible untili a great material of both sexes is accu- 

 mulated and a monograph of the genus prepared. The present 

 species which may of course only be a variety is principally distin- 

 guished by the difference in coloration of the thorax and tlie 

 elytra, the entirely smooth surface of the former and close 

 semiregular punctuation of the latter parts. 



17. Xenidea LorisB, sp. n. 



Purplish, the antennne (the last joint excepted) fulvous, thorax 

 nearly impunctate, elytra violaceous, finely punctate-striate, an- 

 terior tibiae obscure piceous. 



Length 2 V2 millim. 



Head metallic blue or purplish, impunctate, antennae closely 

 approached at the base, extending to the middle of the elytra, 

 fulvous, the apical joint piceous, third and following joints elon- 

 gate, thorax nearly twice as broad as long, the sides straight, 

 the anterior angles oblique, the surface convex, very obsoletely 

 punctured here and there, with a shallow transverse sulcus near 

 the base bounded at the sides by a deep perpendicular groove, 

 elytra metallic purplish or violaceous, finely punctate-striate, 

 not depressed below the base, legs bluish or purplish, the an- 

 terior tibiae sometimes obscure piceous. 



Dilo, Ighibirei, Waicunina. 



One of the smaller species, differing from X. pusilla Jac. in 

 the colour of the antennae and the nearly impunctate thorax ; 

 many specimens. 



18. X.eiii<iea dimidiaticorTiis, sp. n. 



Metallic purplish-violaceous, the intermediate joints of the an- 

 tennae black, the rest flavous, thorax with a basal row of punc- 



