Ill 



DIABATICUS. 



D. collaris, sp. nov. Sat elongatus ; sat nitidus : glaber ; rufo- 

 brunneus, elytris circa scutellum et latera versus infuscatis ; 

 capite parvo ; prothorace quam longiori ut 6 ad 5 latiori, 

 antice quata postice sat angustiori, longitudinaliter profunde 

 canaliculato, lateribus late explanatis (fere ut XantJiophcecd 

 rjttatie, Dej.) pone medium subsinuatis, angulis posticis bene 

 determinatis sed fortiter (quam D. ausfralis, Er., multo 

 magis fortiter) obtusis ; elytris striatis, interstitiis leviter 

 convexis (3° bipunctato) coriaceis. Long., 4 1.; lat., 1^ 1, 



The insect described above seems to be certainly congeneric 

 with D. ausiralis, Er., agreeing with it in the following charac- 

 ters : — ^Head not convex between the eyes, constricted (but 

 obliquely narrowed) and transversely impressed behind the eyes ; 

 mentuni with a median tooth ; tarsi glabrous on upper surface 

 (their fourth joint not bilobed) ; claws serrate ; elytra glabrous. 

 In all other respects likely to be generic it agrees with D. australis, 

 Er., and has the facies of that species. It is readily distinguished 

 from D. australis inter alia by its narrower prothorax which is 

 widely explanate (somewhat as in XantJiophcea vittata, Dej.) on 

 the sides. 



Victoria. 



-D. pauper, sp. nov. Minus elongatus ; subnitidus ; glaber ; rufo- 

 brunneus, prothoracis disco et elytris (margine excepto) 

 piceo-brunneis ; capite sat magno ; prothorace quam longiori 

 ut 4 ad 3 latiori, antice quam postice vix angustiori, longi- 

 tudinaliter sat fortiter canaliculato, lateribus ut D. collaris 

 explanatis pone medium subfortiter sinuatis prope angulos 

 anticos breviter ciliatis, angulis posticis rectis ; elytris 

 fortiter striatis, interstitiis subconvexis minus latis punc- 

 tulatis. Long., 3 1.; lat., 1^ 1. 



This species presents all the generic characters attributed 

 (above) to D. collaris, nor can I find any other characters less 

 indicative of generic agreement with D. australis unless the 

 presence of a few fine short set?e fringing the front portion of 

 the lateral edges of the prothorax can be regarded as such a one. 

 It has stout antennse and short stout tarsi (the fourth joint of 

 the latter emarginate, though by no means bilobed) exactly like 

 those of D. australis, Er,, excepting that the tarsi of the hind 

 legs — as is also the case with D. collaris — are a little less stout. 

 It is at once distinguishable from its two described congeners by 

 inter alia the narrower more convex and quite strongly punctu- 

 late interstices of its elytral stri?e. 



Tasmania. 



