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Eucaridae "and the Pedipalpi but especially the Cryptostemma. - The 
labrum which is divided imto a pars basalis and distalis is coalesced 
with the fused maxillae both in Eucarus and in Cryptostemma. 'The 
trochanter III and IV are in both the forms divided into two parts. 
These points of similarity are certainly very interesting, but when 
we take the great differences into considération (comp. Hansen and 
Sørensen's paper) any nearer relationship between Cryptostemma 
and Eucarus is at least not evident. Thus the Eucarus is similar to 
Gamasidae as well as to Cryptostemma in some respects; in other 
respects f. inst. with regard to the odd position and great number 
of the stigmata they differ from both. The question then arises in 
what order it is most practically placed. The characters which are 
common to the Cryptostemma (Pedipalpi) and Eucarus are few and 
partly found in the Gamasidae; compare C. Birner (4), who has 
tried to "prove that the mouth organs in the Pedipalpi and the 
Gamasidae are shaped in a corresponding manner. On account of 
that, and because it has the complete want of sternites in common 
with most Acari, and last but not least because the definition. of 
this order is so very indistinct, I have called the Notostigmata a 
suborder of Acari. If Eucarus really is an Acarid, it is at least 
in possession of more arachnological characters than any other e. g. 
a great number of lyriform fissures, eleven abdominal tergites with 
longitudinal muscles, the well articulated legs etc. A. Michael wrote 
(12 p. 33 1894) if a puzzling intermediate form occurs in the 
Acarine borderland, it is sure to be on the Phalangium border". 
The maxillae of the Phalangium is not fused. "This fact seems to 
me s0 important that in spite of the divided labrum of Phalangium 
we are obliged to admit that Eucarus standing in the most extreme 
borderland, bears more similarity to Cryptostemma and consequently 
negatives the prophecy of the famous English author. 
.Other species and perhaps more distant relatives of the Noto- 
stigmata are certainly to be found in the exotic countries, when their 
abundance of small Arthropods has been explored. When once we 
have got a richer material, it will be possible to deal with the 
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