BY ARTHUR M. LEA. 705 



Head with a deep and strongly curved impression, the ends of 

 which appear as strong interocular fovese; base obtusely notched; 

 antennae connected by a curved carina. Antennae comparatively 

 thin, second joint fairly stout but slightl}'^ longer than wide, 

 third to eighth small, ninth and tenth larger and more trans- 

 verse, eleventh briefly ovate. Prothorax about as long as wide, 

 sides strongly and, for the genus, evenly rounded; with a strong 

 transverse impression close to ba.se, and with three longitudinal 

 ones; of these the median one is narrow and rather short, and 

 does not traverse the basal impression; the lateral ones are wider, 

 and each terminates in a shallow, foveate expansion of the basal 

 impression. Elytra as in preceding species, except that the 

 dorsal striae are distinct for a greater distance. Upper surface 

 of ahdometi with two very short basal carin?e; lower surface 

 slightly flattened along middle. Metasternum shallowly impressed 

 posteriorly. Front ^?'oc/ian<ers obtusely armed. Length 1 J-l^mm. 



Hah. — West Australia : Karridale(A. M. Lea). 



In appearance close to Plectusodes breviceps, but apical joint 

 stouter, prothorax more convex and narrower, with basal impres- 

 sions more pronounced and of somewhat different shape. It is 

 fairly close to the description of Aulaxus rugicollis, but elytra 

 with more than four basal impressions, metasternum not piceons, 

 and prothorax with the median line almost closed posteriorly. 

 The median line is distinct in front, l»ut narrowed behind, and 

 scarcely visibly connected with the subbasal impression, a char- 

 acter which readily distinguishes it from most species of the 

 allied genera. 



The curved impression on the head is comparatively narrow in 

 front, so that from .some directions the interspace appears to he 

 actually connected with the frontal carina. The club is rather 

 small, the eleventh joint is no longer than the two preceding 

 combined, and is scarcely produced at apex, but, owing to having 

 rather numerous apical hairs, appears at a glance to be somewhat 

 longer. The medio-basal abdominal node, if present on thetypes,/ % - . - 

 IS entirely concealed. / ..j ^^ — '^ / 



..LIBRARY:^ 





