120 Arthur M. Lea : 



ahvays thought that the species of Sil phdninrplid are. in the 

 imago state, predatory on the little black ants that frequent 

 trees ; Dodd holds the same view, and sent me a sjoecies of 

 Silplioynorpha -with an ant on a card, Avith the note that it was 

 a devourer of these ants. I have seen S. suturalis beset by 

 ants, and killing them, but the ants were too plentiful and lively 

 for it to have any chance of making a dinner. The Pseudo- 

 morjjhifii are the only Carabs that I know of as being ant- 

 eaters." 



AdeJotopus celeripes. n.sp. (Fig. 1.) 



Black, highly polished ; appendages bright red, tarsi some- 

 what darker. Margins of elytra with pale and almost regular 

 setae. 



Head about twice as wide as long, with an extremely faint 

 median line ; punctures absent. Prothorar about three times 

 as wide as the length down niiddle, apex emarginate to receive 

 the head to half-way between the eyes ; margins moderately 

 wide ; median line short and very indistinct ; punctures very 

 minute and vague. Elytra with a strong puncture or small 

 fovea on each side of base close to suture ; with moderately 

 dense and very minute punctures, and with some slighth' larger 

 ones forming feeble rows ; margins narrow and very finely ser- 

 rated. Abdomen with rather small jDunctures transversely 

 arranged. Length 5. width 2| mm. 



Hah. — W. Australia : Swan River (A. M. Lea). 



Readily distinguished from all other species known to me by 

 its great width (even more than that of brevipennis), high polish 

 (as in politus), and uniformly coloured elytra (not even diluted 

 with red at the tip), on which are two conspicuous sub-basal 

 punctures. Several other species have such punctures, but are 

 narrower or have the elytra not entirely deep black. In most 

 of the black species of Adelotojnis the sterna and abdomen are 

 red, but in this species they are as dark as the upper surface. 

 The seriate punctures on the elytra are visible only from certain 

 directions. 



One of the two specimens before me was taken from the nest 

 of a stingless "sugar" ant, probably of the genus CamjJonotus ; 



