Genera and Specie.<; of Coleoptera. 47 



disappear from physical causes alone, just as we find certain species 

 of Hemiptera becoming apterous in cold localities or in very cold 

 seasons. In these and other instances of abnormal variation, which 

 in almost every case seem to have some speciality of their own, we 

 look in vain for the " advantage " which is supposed to have been 

 acquired in the " struggle for life." An insect so suggestive of Mr. 

 Darwin's theory should appropriately bear his name. 



Cormodes Darwinii. (PI. II. fig. 8.) 

 C. testaceo-brunneus, fere piceus, hirtis sparsis indutus ; prothoracis medio 



siilcato ; elytris pallidioribus, seriatim punctatis. 

 Hah. Lord Howe's Island, South Pacific. 



Pale testaceous-brown inclining to pitchy, particularly on the pro- 

 thorax and base of the elytra, and everywhere but very sparingly covered 

 with loose grevish hairs ; head punctured in front ; prothorax with a 

 short deep longitudinal impression in the centre; elytra rather wider 

 than the base of the prothorax, %vith a strong basal carina, which gra- 

 dually disappears at rather beyond half their length, the shoulder with 

 another strong carina which is continued nearly to the apex, the side 

 beneath the outer carina bent inwards at the shoulder, coarsely and 

 regidarly punctured, the pimctures becoming smaller posteriorly ; 

 mandibles pitchy ; eyes brown. Length 7 lines. British Museum. 



AuLicus [Cleridae]. 

 Spinola, Rev. Zool. 1841, p. 74. 



AuUcus viridissimus. 



A. subangustua, chalybeo-viridis, nitidus ; antennis fusco-luteis ; pedibua 

 atro-cyaneis, gracillimis. 



Hab. Australia (Sydney). 



Rather narrow, dark chalybeate green, shining, with sparse, long, 

 black, setose liairs ; head and prothorax coarsely punctvued, the latter 

 with a deep transverse groove anteriorlj', and a longitudinal one in the 

 centre ; elytra about two and a half times longer than broad, thickly 

 and coarsely punctured in rows ; legs (especially the posterior pair) 

 slender, dark blue ; body beneath shining greenisli-blue. Length 3 lines. 



Aidicus lemoides. 

 A. latior, aureo-viridis, nitidus ; capite prothoraceque cupreis ; antennis 



flavis ; pedibus piceis, femoribus basi apiceque testaceis. 

 Hah. Australia (Moreton Bay and Sydney). 



Rather broad, golden-gi-een, shining, with numerous pale greyish 

 setose hairs ; head and prothorax rich copper-red, sparingly and rather 

 less coarsely pimctm-ed, the latter with the ti-ansverse impression nearer 

 the anterior border, and with the longitudinal one rather less deep than 

 in the last ; elytra only twice as long as broad, coarsely punctured in 



