in the fusing or not fusing of the serrula exterior with the finger 
in its whole length. In spite of the lucidity of his treatise, and 
though it was partly written in Latin, it was completely overlooked 
by all authors except Thorell. Almost everything concerning the 
antennae is inserted in his ”Organs and Characters”, about which 
later on (1894, 19). 
Almost at the same time Canestrini has in Berlese's '”Acari etc.” 
(11, 1885) published short descriptions and drawings of the antennae 
of all the main genera known to him. It is evident, that he has 
noticed the differences between the genera in this respect, but he 
seems not to have realized the full importance of these distinetions. 
His figures are compared to Hansen's rough and not correct in the 
details; a few examples will suffice. The flagellum and lamina 
exterior of Chelifer Geof. (Fasc. VII, Nr. 4 and 8) are fairly correct, 
but his galea is not distinguished from the tip of the finger, the 
serrula exterior has the basal tooth similar to the following ones, 
and he does not seem to have understood, that the basal plate- 
shaped and the distal serruliformed portions of the lamina interior 
belong to the same organ. In Garypus minor L. Koch he has 
observed the remarkable shape of the serrula exterior (Fasc. XIX, 
Nr. 6), but has overlooked that the flagellum consists of a single 
hair. He has seen the important fact that ”serrula adnata . .. 
est” in Chelifer Geof. and akin genera, while in Obisium 1l., 
Roncus L. K. etc. '”'Serrula digiti mobilis mandibulae conspicua 
a digito sejuncta”. (Facs. X, Nr. 4). Bertkau found in the cephalo- 
thorax of Obisium glands, which debouched near the tip of the 
movable finger; he regarded these glands as spinning glands (1887, 
13, p. 36); in the same year Croneberg arrived at the same con- 
clusion with regard to Chelifer Geof., namely that the cephalothoracie 
glands are spinning glands, which discharge at the apex of the 
movable finger through the branches of the galea. (1887,14,p.150). 
The same author published the next year his studies in full and 
gave a detailed description of the antenna of Chernes cimicoides Fab., 
accompanied by figures. (1888, 15, pp. 425—427); his representation 
