Mr. Westwood on the Affinities of Clinidium. 229 
margin of each, and they are deflexed at the sides ; also in the centre of 
each, there is an obscurely defined brown spot. 
Such are the characters of several of the insects comprised in the genus 
Cucujus ; and while on the one hand their affinity to Uleiota, Dendro- 
phagus, &c. is evident, their relationship with the Trogositarii is no less 
intimate on the other, whether we regard the general habit, or the pre- 
valent structure of the trophi and other essential organs. Thus if the 
incrassation of the terminal joints of the antenne be considered a charac- 
teristic of the latter family, we find several of the smaller Cucwji exhi- 
biting the same structure. If we compare the dissections of Trogosita 
given by Sturm, in his Deutchsland’s Fauna, with those of Uleiota and 
Cucujus, but little general variation will be perceived, and even in respect 
to the formation of the tarsi, we find Gyllenhal (Ins. Suec., 1,73,) describ- 
ing them in Trogosita as being all five-jointed, ‘ articulo primo parvo 
** retracto, preesertim in posticis.”” We also find, at the same place, the 
following interesting observation, ‘* Antennarum articulis extimis 
“* majoribus, uno latere productis, ut et statura corporis, aliquatenus ad 
** Platyceros accedit hoc genus; proprie tamen pectinate dici nequeunt 
** antenne; apud D. Latreille, una cum genere exotico, Parandra dicto, 
** peculiarem constituit familiam, cui nomen “ Trogositarios”’ addidit. 
** Species due alice Suecane,a D. Paykull huc relate, ad sectionem secun- 
‘* dam, tarsis posticis 4-articulatis, pertinent.” 
We subsequently, however, find Gyllenhal inclined to doubt the affi- 
nity of Trogosita with the Lucanide ; and the situation in which he pro- 
poses in his second volume to place it, is the family Cucujipes, thus at 
once establishing the affinity; ‘ Genus Trogosita forte aptius in hac fami- 
“ lia collocandum, quam apud Lucanideos.”’ 
Mr. Stephens also, in his Systematic Catalogue, places it in the family 
Cucujide, but far removed from the remainder of Latreille’s Xy/lophagi. 
Although the opinion of the latter author upon the aftinity of the Cucu- 
Jipes with the Trogositarii, may be seen in the following observations 
upon the former family, which he says “ se rapproche de la précédente”’ 
(Trogositarii amongst the Xylophagi) “ quant 4 l’anatomie intérieure, 
*€ aux tarses, dont les articles sont tous entiers, et quant aux habitudes,’’* 
* Regne Aniinal, 2nd edition, Vol. V, p. 101. 
