250 Dr. AfzeliusV Obfervations on the Genus Paufus, 



confequencc of which is, that I am better acquainted with 

 P .fphcerocerns than with the other. The mouthy however, of both 

 fpecies, and the various parts belonging to it, I have been obliged 

 to examine in their unfeparated ftate, and I have been therefore 

 unable to avoid all miilakes, as the innerrnoft are more or lefs con- 

 cealed by the exterior ones. But I mull confefs that even thefe 

 latter, which I can plainly fee through a compound microfcope, do 

 not appear to me exactly fuch as Fabricius will have them to be». 

 I iliall defcribe them all as I have found them. 



The Palpi are four in number, and feem all to arife from the 

 crofs-line between the eyes, or the bafe of the jugular triangle before 

 mentioned. The two placed in the middle and farther in, and 

 perhaps alfo a little higher up, are three times as long as the others, 

 at the bottom nearly approximate but afterwards diverging, flat 

 within and convex without, moving on two fmall tubercles at the bafe, 

 above which they are firft contracted, and fo more or lefs widened. 

 They may alfo, although my obfervations have not fatisned me on 

 the fubject, be in fome way or other attached to the lowermoft and 

 external part of the labium. In thofe of P. tnicrocephalus I can- 

 not find the lead veftige of articulation except the bafe-hinges.; 

 but thofe ofP '. fphecrocerus feem to be jointed all along, though I 

 cannot afcertain it as a fact, not being able to make out any 

 number of joints, even with the greateft magnifying power which 

 I have ufed. Thefe palpi would probably be called pofteriores or 

 jifjlkl by Fabricius, but the appellation of interiores appears to me 

 much more fujtablc.. The other two, which he perhaps would 

 name enter lores or antici, anfwer every defcription of being ex- 

 teriores, for they are not only placed on the outfide of the interior 

 ones, and clofe to them, but alfo on the outer margin of the often 

 mentioned guttural crofs-bar. They are, befides, very fmall, eredt, 



comprefTed? 



