PHYTOPHAGOUS COLEOPTERA FRO.M NEW GUINEA 481 



X E NOLI N A gen. n. 



Oblong-ovate, maxillary palpi subcylindrical, the terminal joint 

 as long as the preceding one, antennse with the lower joints (the 

 basal one excepted) moniliform, the terminal joints gradually 

 widened, not extending beyond the thorax, the latter transverse, 

 moderately narrowed anteriorly, the anterior margin concave, 

 the sides not thickened, elytra slightly wider at the base than 

 the thorax, obsoletely punctate-striate, the lateral margins thi- 

 ckened, legs rather feeble, prosternum widened at the base, 

 much narrowed anteriorly, laterally grooved, mesosternum very 

 short, deeply concave, the anterior angles strongly produced, 

 tibiae scarcely sulcate, first joint of the tarsi but slightly longer 

 than the second, claws simple, anterior cotyloid cavities closed. 



This genus is much more nearly allied to Lina and Plagiodera 

 than to Chrysomela but differs from either in the closed ante- 

 rior cavities ; it does not fit in any of the Aiistra/icm genera of 

 ChrysomelincB with closed cotyloid cavities on account of the 

 simple claws, the subcylindrical palpi and less transverse shape 

 of the thorax. 



15. Xlenolina marginata, sp. n. 



Fulvous, the terminal joints of the antennae blackish, thorax 

 nearly impunctate, elytra obsoletely punctate-striate, the inters- 

 tices finely punctured, black, the lateral margins strongly thi- 

 ckened, fulvous. 



Length 6 millim. 



Head impunctate, fulvous, with a narrow central furrow, cly- 

 peus triangular, ilavous like the labrum, antennae extending 

 to the base of the thorax, fulvous, the terminal three or four 

 joints blackish, the second and the following three joints short, 

 nearly equal, submoniliform, the apical joints transversely wide- 

 ned; thorax rather more than twice as broad as long, the anterior 

 margin concave, the sides slightly rounded and narrowed in 



Ann. del Mns. Civ. eli St. Nat. Serie 3% Vol. I (11 Febbraio 1905) 31 



i 



