428 Mr. Ji. E. Turner on 



Xylononms vitiosus, sp. n. 



5 . Nigra, opaca ; palpis, facie, orbitis late, propleuris fascia liori- 

 zontali,mesonoto autice macula magna utrinque fasciaque obliqua 

 utrinque postice, tegulis, mesopleuris macula lineaque ante alas, 

 scutello macula mediana quadrata, maculaque parva basali 

 utrinque, segraento mediano apice late, abdomine fere toto 

 subtus, tergitis prime, secundo, tertioque macula magna lateral! 

 triangular! utrinque, fascia anguste apicali connectis, tergitis 4-7 

 fascia angusta apicali, pedibusque ochraceis ; antennis ante 

 apicem late albido cinctis ; alis hyalinis, venis nigris. 



Long. 16 mm. ; terebrae long. 10 mm. 



? . Clypeus extremely short ; face finely and A^ery closely 

 punctured ; front more finely and sparsely punctured ; 

 vertex shining, with a few small scattered punctures. 

 Antennae about 26-jointed, the ten basal joints black, the 

 next nine whitish, the remainder black. Pronotum pro- 

 duced on each side into an acute tubercle ; mesouotum 

 closely punctured, with a tendency to irregular reticulation, 

 notauli deep and crenulate, the lateral lobes separated at 

 the apex by a strongly margined longitudinal groove. 

 Scutellum with a deep transverse excavation at the base, 

 the excavation is smooth and shining and divided by a 

 longitudinal carina, the median portion of the scutellum 

 finely and closely punctured, tlie sides apically depressed 

 tand obliquely striated. Pleurae closely punctured. Median 

 segment with an elongate triangular basal area which is 

 immediately followed by a larger cordate area reaching to 

 the base of the apical truncation ; the spaces on each side 

 of the central areas divided by a transverse carina and 

 margined by a carina laterally and apically, the apical angles 

 produced into a strong spine ; the dorsal surface of the 

 segment finely and closely punctured. First tergite half as 

 long again as the second, irregularly rugose-reticulate, the 

 apical portion indistinctly transversely strigose and with a 

 low longitudinal carina. Second and third tergites very 

 closely punctured, the second feebly reticulate at the base, 

 both with oblique striated depressions from close to the 

 base to beyond the middle, also with another oblique de- 

 pression laterally cutting ofl^' a triangular area at the basal 

 angles, a rounded striated groove joining the lateral grooves 

 apically to the median impressions. Apical tergites micro- 

 scopically punctured. Hind tibije black at the extreme 

 base. 



Hafj. Sala San Tiot, Luang Prabang ; Marcli 10, 1918. 

 1 ?. 



