1892 ] PHYTOPHVGOUS COLEOPTERA, FROM MADAGASCAR. 577 



short, transversely depressed above and impunctate. Elytra narrowly 

 Tnaro;ined with flavous, much more distantly punctured than A. 

 p'llchella, Duv., and the interstices much less strongly rugose, finely 

 wrinkled transversely, and without traces of longitudinal costee. The 

 thorax also is entirely flavous like the head. 



tElianus, n. gen. {Galerucince.) 



Body elongate ; antennse rather robust, the second and third joints 

 short, the following gradually elongate; thorax transverse, the anterior 

 angles more or less produced ; elytra irregularly punctured, their 

 epipleurae narrow but continued below the middle ; tibite mucronate, 

 the first joint of the posterior tarsi nearly as long as the following 

 joints together ; claws appendiculate ; the anterior coxal cavities open ; 

 prosternum not distinct. 



This genus approaches closely Malacosoma in general shape and 

 structural characters, but differs in the longer first joint of the 

 posterior tarsi and in the scarcely visible and not convex prosternum. 

 The female insect differs rather considerably from the male, the 

 antennae are shorter, the apical joints being much less elongate, and 

 the anterior angles of the thorax are thickened and produced. 



^LiANUS scuTELLATUs, n. sp. (Plate XXXIX. fig. 9.) 



Obscure piceous ; the head, antennae, the scutellum, and the tarsi 

 black ; above testaceous, thorax impunctate, spotted with black or 

 without spots ; elytra very minutely punctured ; legs obscure 

 fulvous, stained with piceous. 



Length 2| lines. 



cJ. Head shining, impunctate, black, the frontal elevations 

 strongly raised, the clypeus with a distinct central ridge, obscure 

 fulvous ; palpi slender, piceous ; antenna; extending to half the 

 length of the elytra, black, the third joint slightly longer than the 

 second, the following five joints equal, the others more elongate, the 

 terminal joint half the length of the preceding one ; thorax twice as 

 broad as long, the sides nearly straight as well as the anterior margin, 

 the posterior margin obliquely rounded at the sides ; the anterior 

 angles slightly thickened, the extreme lateral margin black ; the disc 

 flavous or testaceous, impunctate, with four piceous spots placed 

 transversely, the outer ones being the largest ; scutellum large, black, 

 shining; elytra testaceous, the extreme sutural margin narrowly 

 piceous, the disc finely and closely punctured, rather opaque ; 

 underside and legs obscure fulvous or piceous, finely pubescent, the 

 tarsi black ; the last abdominal segment deeply excavate, incised at 

 the sides. 



$ . The antennae shorter, all the joints (the second one excepted) 

 of nearly equal length, rather thickened ; thorax with the anterior 

 angles strongly thickened and produced outwards, the last abdominal 

 segment simple. 



MiMASTROiDES, n. gen. {GalerucincB.) 

 Body elongate ; antennae filiform, the second joint short, the 



