90 



hind pair being densely clothed with long stout hairs or bristles. 

 The prosternal projection behind the coxai is more declivous than 

 in Lacon. On the flanks of the prosternum there are feeble indi- 

 cations of a furrow for the reception of the tarsi ; on the meta- 

 sternuni no trace whatever of a furrow. The antenna? do not differ 

 notably from those of Lacon ; they are short (reaching back to 

 about the middle of the prothorax), and scarcely so stout as is 

 usual in Lacon. The prosternal sutures are as in Laxon. The 

 chin-piece {inentonniere) is very robust and almost erect. 



P. rufas, sp. nov. Subcylindricus ; totus rufus ; setulis squami 

 formibus pallidis brevibus sat sparsim vestitus ; prothorace 

 quam in medio longiori vix latiori, antice parum angustato, 

 fortiter sat crebre punctulato, prope angulum posticum sat 

 deplanato, lateribus minus arcuatis crenulatis ante basin 

 sinuatis, angulis posticis subrectis lateraliter nee postice 

 paullo productis, basi leviter concava ; elytris sat fortiter 

 punctulato-striatis, interstitiis sat angustis subconvexis 

 transversim obscure rugatis vix manifeste punctulatis. 

 Long., 4 1. ; lat., 1^ 1. 



The pallid scales with which the surface is 'thinly covered, both 

 above and below, are placed for the most part in the punctures. 

 Roebuck Bay, W. Australia ; sent to me by Mr. French. 



HOMCEOLACOX, gen. nov. 



A Lacon difFert antennis elongatis pectinatis, articulo ultimo in 

 processu apicali subito angustato ; tarsis gracilibus elongatis 

 (posticis quam segmenti ventrales 2-4: conjuncti haud 

 brevioribus). 



The insect for which I propose this new generic name does not 

 appear to differ notably from Lacon in any other respects than 

 those mentioned above ; its prothorax, however, is different from 

 that of any Lacon known to me, having the sides very strongly 

 rounded in the anterior two-thirds of their length (so that the pro- 

 thorax a little in front of the base is scarcely wider than across 

 the front margin), and then diverging again to the posterior- 

 angles. Of the antenna? joints 4-10 scarcely difter inter se in 

 shape or size; each of them is about as long as the 2nd and 3rd 

 joints together, and is strongly transverse, of triangular shape. 

 Thus the entire antenna (which reaches back quite to the base of 

 the prothorax) appears pectinated. The apical joint is suddenly 

 narrowed on its inner side a little beyond its middle, so that its 

 apical part (which is almost cylindrical) looks like a 12th joint, 

 the portion behind the contraction being produced moreover on 

 its inner side much less strongly than the preceding joints, so that 

 it is longer than wide, even excluding the pseudo-12th joint. 



