Dr. Arzexius’s Objervations on the Genus Paufus. 259 
The Head is uncommonly fmall and without a horn, its annular 
bafe-part higher than the foremoft ; the ¢/ypeus bipartite, and the 
jugular triangle minute. 
The Eyes, being as dark as the furrounding parts, cannot be dif- 
covered but by a large magnifier, and then they appear to be of a 
water-colour. The angles of the brim of the focket are large, the 
hinder one being raifed to the height of the eye. 
The Pivots of the antenna are black, very bright, and eafily taken 
for eyes. The under-jomnt is furnifhed with a wart on the inner 
margin of the top, covered with papillary or cartilaginous hairs. 
The upper-joint, or the clava, is dotted, much greater than the head, 
and of the fhape of an oblong {pheroid, being in front rounded and 
comprefled with the carina raifed into a {harp edge, provided on the 
vertex with four tubercles fet in a row and tipped with hairs, and 
elongated behind into an obtufe tube, laterally compreffed, above 
depreffed, and underneath having a knob, which, in moving, touches 
-the bundle of hairs on the top of the under-joint. The fedicle is 
long and crooked, its upper part being broader, compreffed, and 
keeled in front. 
The safertor Palpi are of a lanceolated-oblong fhape, and furnithed 
with very minute hinges. 
The Mandibule have {mall hinges, and the inferior fheath much 
larger than the fuperior. 
_ The Thorax is broader than the head and very uneven, the two 
parts being entirely feparated by a tranfverfely furrounding furrow, 
the foremo? above and on the fides elevated to a fharp edge like a 
collar, and the Ander one cut out in the middle intoa cavity, which, 
obtufe behind, and dilatated and deepened before, is encompaffed 
on the fides with diverging and outwardly declining lobes, being 
f L.1, 2 at 
