Mr. Westwood on the Affinities of Clinidium. 229 



margin of each, and they are deflexed at the sides ; also in tVie 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, Dsndro- 

 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 antennae be considered a charac- 

 teristic of the latter family, we find several of the smaller Cucuji 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, praesertim 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 pectinatae dici nequeunt 

 " antennae ; apud D. Latreille, una cum genere exotico, Parandra dicto, 

 " peculiarem constituit familiam, cui nomen " Trogositarios" addidit. 

 " Species duae aliae Suecan3e,a D. PaykuU hue relatie, ad sectionem secun- 

 " dam, tarsis posticis 4-atticulatis, pertinent." 



We subsequently, however, find Gyllenhal inclined to doubt the affi- 

 nity of Trogosita with the Lucanidce ; 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 aptiusin hac fami- 

 " lia collocandum, quam apud Lucanideos." 



Mr. Stephens also, in his Systematic Catalogue, places it in the family 

 CucujidcE, but far removed from the remainder of Latreille's Xylophagi. 

 Although the opinion of the latter author upon the affinity of the Cucii- 

 jipes with the Trogositarii, may be seen in the following observations 

 upon the former family, which he says " se rapproche de la precedente" 

 (Trogositarii amongst the Xylophagi) " quant a I'anatomie interieure, 

 " aux tarses, dont les articles sont tous entiers, et quant aux habitudes,"* 



♦ Regne Animal, 2nd edition, Vol. V, p. 101. 



