656 
Mr. J. O. Westwood on the Paussidce, 
longiori, leevi, tenuori, cylindrico, unguibus duobus. Ab- 
domen elytris pauld longius. 
I have considered myself warranted in regarding the charac- 
ters of the Paussus denticornis of Donovan and its affinities as 
indicative of a genus distinct from that of the true Paussi, not 
only in consequence of their dissimilar general external appear- 
ance or habit, but also of the variation exhibited in the lower 
parts of the mouth. 
The typical species appears to have been inserted in the genus 
Paussus by Donovan with a feeling of suspicion, since he states 
that, according to Afzelius’s characters, it should not come into 
that genus, the number of joints in the tarsi being only, as he in- 
correctly states, 3 : whereas, in the other species, the taisi aie 5- 
jointed, although, if not closely inspected, they appear 4-jointed. 
The essential generic characters of the insect were however 
omitted in Donovans short specific description. 
Gyllenhal, in the Synonymia Insectorum of Schonherr, vol. i. 
part 3 ; App. p. 14. tab. 6. fig. 1. (by a singular coincidence, 
evidently arising from similarity of structuie,) desciibed and 
figured a distinct species nearly allied to Donovan’s P. denti- 
cornis, under the same name. He, however, regarded it as a 
true Paussus, and thus shortly described its trophi : “ Os in- 
flexum brunneum, palpis crassis, pilosis, conicis vel extrorsum 
attenuate, ” evidently without noticing the peculiar structure of 
the latter organs. 
Dalman also in his observations upon the Paussus Bucephalus 
mentioned above, regarded the P . denticornis of Gyllenhal as a 
true Paussus, “ Etenim in illo et in ceteris veris Pausis, &c.” 
From the true Paussi, however, these insects appear sufficiently 
generically distinct ; since the flat, depressed body and thorax ; 
the 
