12S :\rr. Tl. W. l^>ate.s roi thr Lomjicorn 



Hybolasius, nov. gen. 



Gen. Heheseci affinc. Corpus oblongum, tomentosum. Caput re- 

 tractum, fronte quadratum. Antennce corpore paulo longiores, 

 ciliata?; scapo quam articulo tertio miilto breviore, breviter cla- 

 vato ; articulis tertio et quarto caeteris singulis multo longioribus, 

 hoc paulo curvato. Thorax lateribus tuberculatis. Elytra apice 

 rotundata, basi ulriiique cristata. Pedes robusti ; femora clavata ; 

 tibiae gradatim dilatatae, intermediis vix emarginatis. 



This genus is founded on a common New-Zealand insect, 

 the Lamia crista of Fabricius, which White placed in the 

 genus Pogonocherus. It agrees with Pogoaocheriis in many 

 essential characters — such as the structure of the sterna, the 

 form of the sockets of the anterior and middle coxse, and the 

 divaricate claws ; but the antennas resemble much more nearly 

 those oi Hehesecis and the allied genera, differing chiefly in 

 the shorter and more regularly clavate scape. There is, how- 

 ever, scarcely any difference in the formulae given by Lacordaire 

 of the two groups Hehesecides and Pogonocfierides, although he 

 places them so widely apart. The genus is also closely allied 

 to the Chilian (Ectropsis^ placed by Lacordaire in the Ejco- 

 centrides group. 



Hyljolasius crista. 

 Lamia crista, Fab. Syst. Entom. p. 170. 



Fabricius describes the basal tubercles of the elytra as ti'i- 

 dentate ; but, as I have satisfied myself by examination of 

 his type specimen in the Banksian collection, they are not 

 toothed at all, but surmounted by a compressed pencil of hairs. 

 This type is a large form of the species (3f lines), of tawny 

 brown colour, with the narrow black posterior fascia unaccom- 

 panied by a broader dark belt. Most of the examples I have 

 seen (from Auckland) are smaller, about 3 lines, with much 

 darker brown elytra, having the shoulders and an apical spot 

 tawny, and a broad posterior blackish fascia, the anterior 

 margin of which is black, margined again anteriorly with 

 light tawny. But all connecting gradations occur, and I 

 believe they form only one variable species. It may be 

 known from its congeners by the elevated penicillated crests, 

 the robust acute lateral thoracic tubercles, and the finely striated 

 integument of the thorax. 



Hyholasius viridescens, n. sp. 



H. subdepressus, hirsutus, fuscus ; elytris herbaceo-viridibus, medio 

 dorsi fulvesccntibus, strigaque obliqua nigra ; thoracis tuberculis 

 latoralibusmngnis obtusis, dorsohaud striato, medio trituberculato ; 



