108 MR. M. JACOBY ON THE [Feb. I, 



spots ; elytra finely punotured, sparingly pubescent, the base and a 

 broad transverse band below the middle greenish piceous. 



Length 3 lines. 



Head impunctate, a triangular spot at the middle of the vertex, 

 and another smaller one at each side, piceous; eyes prominent ; the 

 frontal tubercles distinct, but rather small. AntennsD as long as the 

 body, piceous, the apices of all tlie joints testaceous, the first joint 

 curved and slender, the second one extremely small, entirely testa- 

 ceous, the eight following joints with long and slender appendages, 

 the tenth much longer and broader than the preceding ones, the 

 terminal joints long and slender. Thorax twice^as broad as long, 

 the sides slightly rounded at, but somewhat constricted below, 

 the middle, the posterior margin evenly rounded, the anterior one 

 nearly straight ; the surface obsoletely transversely depressed, en- 

 tirely impunctate, with a narrow longitudinal band at the sides 

 and three spots, placed triangularly at the middle, piceous. Scu- 

 tellum triangular, testaceous. Elytra with two deep foveas below 

 the base, the punctuation rather fine and placed in close, very 

 irregular rows, the interstices slightly convex and furnished with 

 rows of stiff testaceous hairs ; a narrow transverse band at the base, 

 the interior of the subbasilar depressions, and a broad transverse band 

 below the middle, consisting of longitudinal bands joined together, 

 greenish aeneous or piceous ; the elytral epipleura and the breast of 

 the same colour. Tibiae sHghtly stained with piceous at their apices ; 

 the latter unarmed ; the first joint of the posterior tarsi as long as 

 the three following joints togetlier ; claws appendiculate ; anterior 

 coxal cavities closed. 



Bogawantalawa. 



The genus Xenarthra was established by Mr. Baly on an insect 

 likewise from Ceylon, and described in the ' Journal of Entomology ' 

 for 18G0. The curiously shaped and deeply pectinated antennae, 

 consisting of 12 or even 13 joints, will without difficulty allow the 

 genus to be recognized at first sight. Closed anterior coxal cavities 

 and unarmed tibiae seem to show the place of Xenarthra to be 

 amongst the Plntyxanthhice of Chapuis. There is unfortunately 

 only a single specimen of this handsome species before me, and being 

 fixed upon a card I am not able to say with certainty to which sex 

 it belongs. Mr. Baly evidently also only knew the male sex of his 

 species, and it is possible that the female insect differs in the shape of 

 the antennae. In the present insect a close examination of these 

 parts proves them to consist of 1 3 joints, the terminal one or appendage 

 being here much longer than in any other Phytophagous insect with 

 which I am acquainted. 



Chapuis has described a species of Xenarthra from Abyssinia of 

 which I possess a specimen ; this species, however, belongs to an 

 entirely different genus. 



Xenarthra lewist, sp. nov. (Plate XI. fig. 10.) 



Entirely testaceous, the two last joints of the antennae black. 



