n,n 
Sh Lars ey iv a ee : ~~ eS — 
eae aie eat x ia eer 
Mr. T. G. Sloane on Haliplidae and Paussidae. 591 
table of genera (lnc. 5), where he says the antennae are 
quasi 10-, 6-, or 2-arliculatae; but later, he must have 
lost his belief in its existence, to be followed by subsequent 
authors. I have seen this little joint in the genera of the 
tribes Cerapterini and Paussini which I have been able 
to examine, viz. Cerapterus, Arthropterus, Ceratederus, 
Platyrhopalus, and Paussus, and believe it would be found 
in the other genera of these tribes. Recognition of this 
little second joint requires that the formula of the tribe 
Cerapterini be amended to—antennae 11- or 7 -jornted ; 
and that of the tribe Paussini to—antennae 7- or 3-jounted. 
It is to be noted that, unless one is prepared to deny the 
existence of the little true second joint, it is necessary to 
call the basal joint of the clava the third jomt; it 1s now 
invariably called the second joint. 
