226 Mr. Westwood on the Affinities of Clinidium. 
The accurate examinations and descriptions of Gyllenhal throw, howe- 
ver, some light upon the formation of these organs, and accordingly we 
find the following observation in the Addenda to the first volume of the 
Insecta Suec., Vol. II. p. 6, (misprinted 4.) ‘* Secundum observationes 
«© Cl. Dom. Schénherr, in Act. Holm. 1809. pag. 52, et sequ. plurime 
“© species Generis Cucuji tarsos gerunt omnes 5-articulatos, ideoque heic 
‘* [Pentamera] inseratur Familia 9-10: ma Cucujipes.” This reference 
being unfortunately incorrect, I have not been able to make that use of 
Schénherr’s observations which I could have wished ; and in the charac- 
ters which Gyllenhal has given of the genus, we find ‘* Tarsuum articulus 
‘* primus minutus inferus stipuliformis,’’ with the additional observation 
upon Cuc. depressus, “In altero sexu, forte masculo, tarsi postici tantum 
*¢ 4-articulati, primo minuto stipuliformi, secundo elongato cylindrico, 
** tertio brevi sub-bilobo, quarto unguiculari longo clavato.”’ 
In my specimen of Cuc. depressus the joints of the tarsi are exactly as 
represented in fig. 5, F, G and H. Regarding; therefore, the last observa- 
tion of Gyllenhal to be correct, we are led to consider that in all other 
respects a similar formation of organs (including, of course, the antenne) 
is observed in the sexes, since, if this had not been the case, Gyllenhal 
would most certainly have apprized us of the differences. The compa- 
rative smallness of the second joint, and the very slight incrassation of 
the last three joints of the antenne of this species will be perceived in 
fig. 5, A. 
In the British species Cuc. dermestoides, which is well figured by Pan- 
zer, 3, B, there are several peculiarities of formation, which distinguish 
it from Cuc. depressus. In shape it is more oblong. The hinder angles 
of the head are not so much produced. Its antenne are shorter, with 
the second joint nearly as large as the third, the eighth small, and the 
three following incrassated, (Tab Supp. xv1, fig. 6, A.) The mentum is 
different, the anterior margin being pointed in the middle (Ibid. E.), and 
the last joint of themaxillary and labial palpi, although truncate at the 
tips, is not obconic (Ibid. C. and D.) According to Gyllenhal, however, 
the posterior tarsi vary according to the sex, as in Cuc. depressus, and as 
no other variation is noticed by that author, we may conclude that the 
antenne do not vary in the sexes. Upon the affinities of this insect 
Gyllenhal observes, * Antennarum et scutelli structura, ut et articulorum 
