68 



2. Prothorax gently uarrowed from the apex to the base ... 3 



Sides of prothorax parallel ... C. Adelaides. 



»3. Second and third joints of antenna? scarcely differing in 



length ; joints, six to ten, scarcely longer than wide. 



C. delicatulum. 



4. Third joint of autenure evidently longer than second ; 



joints, six to ten, longer than wide ... C. elegans, 



C. varicorne, sp. nov. (mas.) Nitidum ; sat robnstum ; nigrum ; 

 palpis, mandibnlis, elytris (propter basin iufuscatam) non- 

 nullis exemplis, et antennarum basi apiceqne rufis; pedibus 

 (tibiis infuscatis exceptis) testaceis ; antennarum articulo 

 1° maxime elongato, ceteris multo minoribus, 2° et 3° sub- 

 sequalibus, 5°-I0° hand longioribus quam latoribus ; capita 

 subquadrato, subcTqualiter (disco Isevi excepto) sparsim sat 

 fortiter punctulato, fronte vix depressa ; prothorace sub- 

 cylindrico, tertia parte longiori quam latiori, capite quinta 

 parte angustiori, subseriatim punctulato, spatio medio 

 longitudinal! lato alteroque utrinque angustiori laevibus- 

 elytris prothoraci lougitudine ^equalibus, capite vix 

 latioribus, crasse nee profunde nee crebre subseriatim 

 punctulatis ; abdomine subtiliter nee crebre punctulato, 

 segmentis apicalibus 2 (nonnullis exemplis) apicepiceolis ; 

 segmento ventrali penultimo postice medio fortiter de- 

 presso, spatio depresso la?vi postice emarginato antice 

 tuberculo instructo segmento ventrali ultimo longitudi- 

 naliter depresso, postice profunde triangulariter inciso. 

 Long., 7-7i mm. 



Eem. capite postice confluenter rugoso-punctulato, 

 abdomine supra crassius (quam maris) punctulato, segmentis 

 ventralibus simplicibus. 



I do not think that the mutilated specimen on which M. 

 Tauvel founded his O.fractum can be identical with the above 

 insect, although it is probably allied to it. The following 

 appear to be points of difference : — Fractum has the third joint 

 of the antennae very evidently longer than the second, the 

 thorax evenly punctured outside the smooth discal space, the- 

 elytra longer than the thorax and wider than the head, while 

 in varicorne the second and thix'd joints of the antenUcT scarcely 

 differ from each other in length, the puncturation of the thorax 

 runs in tolerably regular lines separated by smooth spaces, 

 and the elytra are (by measurement under a lens) equal in 

 width to the head and in length to the thorax. Supposing the 

 single female specimen in my possession to be not abnormally 

 punctured (which it is just possible it may be), the punctura- 

 tion of its head is totally different from that of fractum. 



I have taken this species at Port Lincoln. 



