BY ARTHUR M. LEA. 203 



Genus H e x y m u s, Pascoe. 



Journ. Linn. Soc, Zool. xi. p, 188. 



Head rather small, not entirely concealed by prothorax; ocular 

 fovea small, distinct or not. Ei/es large, moderately granulate, 

 subtriangularly produced in front. Rostrum long, thin, curved. 

 Ajitennce long and thin; scape inserted nearer apex than l^ase of 

 rostrum, in 9 slightly, in ^ considerably passing apex; 2nd joint of 

 funicle long; club ovate, free, joints oblique. Prothorax slightly 

 transverse, apex much narrower than base; ocular lobes obtuse; con- 

 striction feeble; base bisinuate ; sides precipitous; scutellar lobe 

 small. Scntelluyn small, distinct, not depressed. Elytra wider than 

 prothorax and about twice its length, apex narrow, conjointly 

 rounded, posterior declivity (along suture) subequal to anterior 

 portion. Pectoral canal narrow, deep, terminated near bases of 

 intermediate coxfe. Mesosternal receptacle feebty raised, base 

 and sides thin, apices touching anterior cox?e, emargination con- 

 siderably longer than wide, slightly cavernous. Metasternum 

 very narrow, constricted in middle, dilated towards epistei-na; 

 these moderately large, the length of two basal segments of 

 abdomen. Abdomen regularly decreasing in width to apex, 

 sutures distinct; basal segment almost twice the length of 2nd, 

 intercoxal process moderately narrow, rounded, intermediates 

 combined longer than 2nd or apical and not at all depressed. 

 Lerjs long ; posterior trochanter distinctly smaller than visible 

 parts of coxaj ; femora scarcely grooved, each with a distinct 

 sharp tooth, posterior in $ passing, in 9 scarcely extending to 

 apex of elytra; tibise thin, compressed, curved; tarsi slender, 1st 

 joint grooved beneath, 3rd rather small, deeply bilobed, 4th long, 

 pubescent or not; claws widely separated. Short, broad, deep, 

 squamose, punctate, tuberculate, apterous. 



Mr. Pascoe says that this genus is '' appai'ently allied to 

 Poropterus, although the metathoracic episterna are very large." 

 It does not appear to be close to any described Australian genus 

 (except possibly Plagiocorynus), though to a certain extent 

 resembling Petosiris, Onidistus, itc. 



