254 



The elytra on one of the specimens are almost black, with 

 a slight bluish gloss ; the apical segment of the abdomen is 

 entirely pale, the others have the sides and tips pale; the 

 four hind femora are more or less deeply infuscated, and the 

 infuscation sometimes extends to other parts of the legs. The 

 elytra from some directions appear to be feebly wrinkled, the 

 punctures and granules are not very sharply defined, although 

 sufficiently distinct. The female (not taken by Mr. Feuer- 

 heerdt) will probably be found to have the head smooth and 

 the basal joint of the front tarsi simple. 



The generic distinctions between Carphurus, Helcogaster, 

 and N eocarphurus are comparatively trifling, but still with 

 long series of each seem quite satisfactory, and they may be 

 readily separated at a glance ; but the present species, except 

 for the antennae, seems intermediate between Carphurus and 

 Iltlcogaster ; the fourth-tenth joints of its antennae, however, 

 are conspicuously wider than long (not due to serrations or 

 rami), this being at variance with all other brachelytrous 

 Malacodermidae with exsertile vesicles. The species should 

 perhaps have been regarded as the type of a new genus. 



PTINIDAE. 



Enasiba tristis, Oil. 

 PI. xxv., figs. 37 and 38. 

 Mr. Clark has taken, near the Swan River, several speci- 

 mens of this species from nests of the twig-mound, ant 



(Iridomyrmex condfera). They 

 vary in length from 3 '5 to 

 4 mm., and in colour from 

 piceous to deep shining black, 

 with the legs more or less red- 

 dish. They all have four small 

 short yellow fasciae on the sub- 

 basal impression of the pro- 

 thorax : two marking the end 

 of the median line, and one on 

 each side. The antennae are 

 peculiar, and from the side (pi. 

 xxv., fig. 38) agree with Olliff's 

 description, but from above they 

 Enasiba tristis, Oil. ] °ok very different (fig. 37). 



POLYPLOCOTES CARINATICEPS, n. sp. 



PI. xxv., fig. 39. 

 Castaneous, elytra, abdomen, and tip of antennae some- 

 what paler than other parts. Glabrous. 



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