Aulacophora and allied genera. 307 



Mas. — Antennarum articulis 2do, 3tio, 4to, 5toque compressis, 

 paullo dilatatis et extus carinatis ; abdominis segmento anali tri- 

 lobate, lobo intermedio subquadrato, piano. 



F(EM. — Abdominis segmento anali bilobato, lobis planis. Long. 

 3i— 4 lin. 



Hab. Borneo. 



Antennae two-thirds the length of the body, pale flavous, the 

 extreme apex of the terminal joint nigro-piceous ; the second, 

 third, fourth, fifth, and sixth joints in the $ compressed and very 

 sHghtly dilated, the second trigonate, the third twice its length, its 

 outer margin carinate, distinctly sinuate, the fourth, fifth, and 

 sixth also carinate, each rather shorter than the third. Thorax 

 twice as broad as long ; sides nearly straight and parallel, emargi- 

 nate just behind the anterior angles, the latter subacute ; the hinder 

 angles obtuse ; upper surface impressed just behind the middle with 

 a deep, nearly straight, transverse groove ; sm-face distinctly punc- 

 tured, the punctures coarse and more crowded on either side in 

 front. Elytra oblong-ovate, dilated posteriorly ; convex, trans- 

 versely depressed below the basilar space, distinctly and rather 

 closely punctured. 



The dilated antennae in the 3^ , together with the 

 bilobed apical segment of the abdomen in the ? , will 

 separate this species from its congeners with similarly 

 coloured elytra. 



Aulacophora biplagiata. 



Late ovata, postice ampliata, convexa, rufo-testacea, nitida, 

 antennis flavis, apice nigro-piceis ; tibiis, tarsis elytrorumque plagis 

 sub-humeralibus duabus, nigris. 



Mas. — Abdominis segmento anali trilobate, lobo intermedio 

 piano, sulco longitudinali leviter impress©. 



F(EM. — Abdominis segmento anali integro, apice extremo obtuse 

 truncate. Long. 4 — 4^ lin. 



Hah. Solo-Sula. 



Antennae nearly four-fifths the length of the body, filiform in 

 both sexes, flavous, the basal joint rufo-fulvous, the apex of the 

 terminal one nigro-piceous, the second and two or three following 

 joints sometimes stained with piceous. Thorax twice as broad as 

 long; sides rounded anteriorly, obsoletely sinuate and slightly 

 diverging behind the middle ; upper surface impressed just behind 

 the middle with a deep transverse groove. Elytra broadly oblong- 

 ovate, convex, deeply excavated transversely below the basilar 



