6 
is quite good and so are his figures with the exception of that of 
serrula exterior (taf. X, fig.7); he has besides observed the differences 
found in the fusing of the serrulae, between Obisium Ill. and 
Chelifer Geof. 
The next author, who studied the antennae, is Daday (1889, 
1632. p. 166), who sets forth the opinion, that his predecessors viz. 
Stecker, Simon and Tåmåsvary etc., ”erwåhnen von den Mandibeln 
der Chernetiden blos eine Serrula und zwar auf dem åusseren 
beweglichen Glied derselben. In Folge meiner Untersuchungen aber 
bin ich zu der Ueberzeugung gelangt, dass auch auf dem inneren, 
unbeweglichen Glied der Mandiblen aller Chernetiden sich eine Ser- 
rula findet, — welche auf der Bauchseite desselben gelegen, — 
von oben nicht wahrnehmbar ist und måglicherweise haben eben 
deshalb die friiheren Forscher dieses Gebilde nicht wahbrgenommen”. 
His first statement is quite wrong, as both Tulk, Schiddte, Tåmesvary 
and even Stecker, not to mention Hansen and Canestrini have ob- 
served the serrulå interior in most forms, in which it occurs, and 
so is his second about the occurence of two serrulae in all forms, 
for it is not quite well chosen to call the lamina interior of a 
Chelifer Geof. a serrula. The same author has lately (1897, 20, 
tab. XI, fig. 17) published an almost correct figure of the lamina 
interior in Chelifer megasoma Dad. In his "fArtrogastri Birmani” 
(1889, 16b. p. 592) Thorell compares his nomenclature of 1882 with 
that of Hansen and describes the antennåe minutely in- several forms. 
Balzan seems in his valuable paper (1890, 17, p. 406) com- 
pletely to have understood the structures of the antennae in the 
different genera, for he uses in his classification like Hansen in 
1884 the structure of the serrula exterior and serrula or lamina 
interior, as well as the presence or absence of the lamina exterior 
as his main characteristic between the Cheliferidae and Obisiidae. 
In his working out of this system he has probably been acquainted 
with the paper of his compatriot Canestrini. He has provided many 
good figures of galeae and flagella, as he used these organs in his 
definition of the species, and was the first, who pointed out that a 
