200 THE INSECTS OF GAYNDAH, 



402. — Oryctes obscurus. n. sp. 

 Length 10 lines. 



Of a dull chocolate colour, very opaque. Head densely punc- 

 tate with a somewhat acute slightly recurved horn in the centre 

 of the forehead, and with the clypeus subsinuate at the sides and 

 narrow, truncate and bituberculate in front. Thorax largely 

 retuse in front, marked on the retuse portion and along the 

 anterior parts generally with large shallow transverse variolous 

 looking impressions, and on the basal portion with small distant 

 punctures. Scutellum rugosely punctate, smooth on the margins 

 and semicarinate in the middle. Elytra little convex, and ap- 

 parently smooth but seen under a lens to be marked with light 

 striae, each stria composed of very shallow variolous impressions. 

 Pygidium coarsely punctate. Under side of body fulvo-pilose. 



The only specimen of this insect is a male. 



403. — Semanopterds depressiusculus. n. sp. 

 Length 9 lines. 



Black, subnitid. Head rugosely punctate with a small conical 

 tubercle in the centre of the forehead, and the apex of the clypeus 

 slightly rounded in front, and reflexed in the middle into a 

 minute tooth. Thorax transverse, deeply emarginate in front, 

 rounded on the sides, almost truncate at the base, with the 

 anterior angles advanced and acute, the posterior square, and the 

 median line marked with two punctate fovese, the anterior one 

 round, the posterior elongate. Scutellum punctate at the base, 

 smooth at the apex. Elytra with the suture smooth and elevated, 

 and with four costse on each side, the intervals between the first 

 three having three irregular rows of coarse punctures, while 

 towards the sides the puncturation becomes closer and much less 

 regular. Pygidium finely punctate. Under surface nitid, with the 

 meso-and meta-thorax densely punctate, and fulvo-pilose. Fore 

 tibiae strongly tridentated externally and acutely so in the males, 

 and with the internal apical spine large in both sexes and acute 

 in the male. 



