id 
first abdominal tergite, the two rows of lateral sclerites and the 
structure of the palps, which is in some respects not quite without 
similarity to that of Chthonius C. K. To this may be added the 
remarkable antennae, the marginal tubercles of the head (cf. Chthonius 
C. K.), the prominent eyes (cf. Garypus L. K.) and the structure of 
the legs, especially of the femur of the. fourth pair of legs. 
In spite of these characters, which may perhaps be thought 
important enough to justify giving Feaella Ell. quite a peculiar 
position within this order, it may be possible by taking everything 
into consideration at least to make a more humble place probable. 
In åa few structures viz. the elongated cephalothorax of almost 
equal width throughout, the subdivision of the front margin, the fusing 
of the eleventh sternite and tergite, and the wanting lamina interior 
of the antennae, a slight similarity may perhaps be found to the 
Chthoniidae Hans. and other Hemictenodactyli Balz. The only one of 
these characters, which is of some importance, is the wanting lamina 
interior; but as this structure, however, is wanting in Ideoroncus 
laminatus With, one of the Hemictenodactyli, and as its absence 
in this case may possibly be explained by the remarkable structure 
of the palp and front margin, we cannot base any conclusion on 
its absence. 
To the Panctenodactyli, especially the Garypidae Hans. it 
provides similarity by the slightly gaping fingers of the antennae, 
by the shape of the lamina interior, by the flagellum, which consists 
of a single hair only, by the completely fused serrula exterior, the 
toothed hairs of the antennae, as well as by the granulation of 
the body and the longitudinally divided second to tenth abdominal 
tergites. By the uniarticulation of all the tarsi it only agrees 
with the Cheliferidae Hans., among the four families of the Chelonethi, 
but by the structure of the femur of the first pair of legs it is 
very similar to Garypinus nobilis With (29, fig. 7, p. 38). 
On full consideration I feel justified in regarding the Feaellaceae 
El. ås a family coordinate to the Garypidae Hans. and Cheliferidae 
Hans. and derived from a common stock, standing between the two 
