MACRIMA MALAYENSIS. 217 



minalis by its pale flavous or testaceous colour of its upper 

 surface; it is however possible that it is but a variety of 

 the last named species. 



Malacosoma cyanicoUis , n. sp. 



Oblong-ovate, dark violaceous; antennae flavous, the 

 first 2 joints piceous ; thorax nearly impunctate ; elytra 

 fulvous, very finely punctured. — Length 3 lines. 



Head impunctate ; frontal tubercles flattened, contiguous , 

 bounded behind by a transverse groove ; clypeus transverse , 

 thickened; labrum black; apical joint of palpi obscure ful- 

 vous ; antennae two thirds the length of the body , flavous , 

 the first and the base of the second joint piceous, shining; 

 third joint one half longer than the second; thorax con- 

 vex , nearly twice as broad as long , the sides rounded , 

 anterior angles thickened and slightly produced ; posterior 

 margin a little rounded ; surface nearly impunctate , shi- 

 ning , dark violaceous blue , scutellum of the same co- 

 lour; elytra convex, slightly widened behind, fulvous, 

 very finely and closely punctured , visible only under a 

 strong lens; their epipleurae continued below the middle; 

 all the tibiae with a small spine ; first posterior tarsal joint 

 rather shorter than the 2 following united; claws appen- 

 diculate; anterior coxal cavities open. 



This species has all the structural characters peculiar to 

 Malacosoma but the thorax is more transverse than is ge- 

 nerally the case with species of this genus. 



Arcastes suturalis, n. sp. 



Oblong-ovate , fulvous ; abdomen , legs and antennae 

 black, the last 2 joints of the latter testaceous; elytra 

 minutely punctured, black, the suture narrowly fulvous 

 below the base. — Length 2^/2 lines. 



Head fulvous, impunctate, transversely grooved between 

 the eyes ; clypeus triangular ; antennae more than half the 

 length of the body , the intermediate joints widened and 



Notes from the Xieyden IMuseura, Vol. "VI. 



15 



