576 MR. M. JACOBY ON NEW [NoV. 1, 



following joints together ; claws appendiculate ; the prosternum very- 

 narrow, convex between the coxae ; the anterior coxal cavities open. 



Malacosoma flavicorne, n. sp. (Plate XXXIX. fig. 12.) 



Flavous ; the clypeus, thorax, the apex of the femora, and the 

 abdomen black ; thorax closely punctured; elytra flavous, punctured 

 like the thorax. 



Length 2| lines. 



Head impunctate, pale fulvous, the frontal elevations narrovply 

 transverse ; the clypeus black ; antennae fulvous, rather robust, the 

 third joint one half longer than the second, the fourth as long as 

 the preceding two joints together ; thorax about twice as broad as 

 long, the sides rounded, the anterior angles slightly produced, the 

 posterior ones rather obsolete, the surface rather strongly and closely 

 punctured, black; elytra flavous, very closely punctured; the apex 

 of all the femora black ; tibiae mucronate, the first joint of the pos- 

 terior tarsi as long as the following two joints together ; claws 

 appendiculate ; abdomen black, pubescent ; prosternum very narrow 

 but distinct, convex. 



A single specimen. 



Antsianaka viridis, n. sp. 



Testaceous ; the antennae, the abdomen, and the tibiae and tarsi 

 black ; the head, and thorax impunctate ; elytra metallic green, 

 finely punctured and transversely rugose. 



Length 2 lines. 



Head with a more or less distinct depression at the vertex, the 

 latter with a faint metallic hue, impunctate ; labrum black ; antennae 

 as long as the body, very slender, black, all the joints with the ex- 

 ception of the second very elongate ; thorax short, without a distinct 

 lateral margin, the surface impunctate, with some shallow transverse 

 depressions, testaceous ; scutellum black ; elytra bright metallic 

 green, finely transversely rugose, and closely punctured. 



Closely allied to A. jpulchella, Duviv., but differing in the pale 

 head, the absence of the green thoracic margin, the entirely green 

 elytra, and the black abdomen. 



Antsianaka longicornis, Duviv. 



I refer a single specimen to this species ; my specimen differs, 

 however, from the description in having an entirely testaceous head. 

 M. Duvivier docs not mention the colour of the antennae, which 

 are fuscous in my specimen with the basal two joints black. 



Antsianaka elegantula, n. sp. (Plate XXXIX. fig. 10.) 



Pale flavous ; antennae (the basal two joints excepted) black ; 

 elytra metallic blue, narrowly margined with flavous, rather strongly 

 punctured ; the interstices finely transversely rugose. 



Length l\ line. 



Smaller than any of its alHes, the antennae extending beyond the 

 elytra, entirely black, with the exception of the first two joints, 

 which are flavous ; the head swollen, impunctate ; the thorax very 



