134 



cies that I have attributed to that genus, mentioning especially as 

 distinctive of Pldceocarabus a much smaller second joint of the 

 antennas and a more JCanthophoea-like head. As Mr. Sloane has 

 seen the insect on which the genus was founded I have no doubt 

 he is right in the matter, but, nevertheless (as I pointed out in a 

 paper read last week before the Linnean Society of N. S. Wales) 

 these South Australian species agree very well with the published 

 characters of Pldceocarahus, so that they can hardly be furnished 

 with a new generic name except after a re-characterising of PJi loeo- 

 carahus. Mr. Sloane's courtesy in making these comparisons how- 

 ever enables me to perceive the need of pointing out that my 

 allusion to Plthfocarahus above refers to the South Australian 

 species which I have attributed to tliat genus, and might possibly 

 not apply to the original type.] 



D. tumidiceps, sp. no v. Elongatus, capite prothoraceque con- 

 junctis elytris vix brevioribus; glaber ; sat nitidus ; obscure 

 rufescens, elytris piceo-umbratis, antennis, palpis, pedibus, 

 meso- et metasternis abdomineque, testaceis,-hoc ad latera 

 piceo-maculato ; capite pone oculos fortiter dilatato ; hoc 

 prothoraceque sparsim subtiliter punctulatis et subtiliter 

 trans versim rugatis ; elytris sat fortiter striatis, inters titiis 

 vix convexis minus sparsim punctulatis, postice rotundato- 

 truncatis. Long. 3^ 1. ; lat. 1 1. 



Antennas less than half as long as the whole insect, moderately 

 robust, the second joint shorter than the rest, which are subequal. 

 The head is subparallel, and scarcely narrower than t]ie pro- 

 thorax, and is longer (from the base to the apex of the labrum) 

 than it is wide, being as wide across the post ocular dilatation as 

 across the eyes ; there is a deep impression on either side at the 

 inner front corner of the j^ost ocular dilatation from which a 

 furrow runs forward just within the eye, and curves forward 

 across the head between the antennas, in front of which the sur- 

 face of the head is uneven. The prothorax is fully as long as 

 wide, subtruncate in front, with the dorsal channel strong but 

 abbreviated at both ends, the anterior angles quite rounded oif, 

 the sides very finely margined, roundly divergent hind ward im- 

 mediately behind the base and then gently convergent and almost 

 straight to the base, which is narrower than the widest part of 

 the segment by about a third part of the width of the latter ; 

 the hind angles are subdentiform, with the adjacent surface a 

 little explanate ; the anterior curved impression is very strong, 

 the base rather strongly lobed in the middle. The elytra are 

 widest behind the middle, where they are nearly twice as wide 

 as the widest part of the prothorax ; there are two large punc- 

 tures on the third interstice. The mentum is strongly toothed ; 



