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considerable difference in the dentition on the interior 
side of the fingers, but of practical reasons they are 
often not easily employed. 
In Chelifer granulatus C. Koch both fingers are 
furnished with a close row of uniform teeth, which 
are alike on both fingers. In the Danish species of 
Chernes we find on both fingers the close row on the 
interior margin, and behind this, both on the exterior 
and on the interior side (not indeed as mentioned in 
Arthr. Dan. only on the interior side) some large teeth 
(Tab. V. fig. 14, b), placed far apart the slightly 
removed from the interior margin; there is, moreower, 
in certain species (as Ch. nodosus) some difference in 
the teeth on the interior margin of the 2 fingers*). 
*) Croneberg has overlooked the secondary teeth (op. cit. p. 
428, Taf X, fig. 11.). Judging from the representation of 
the structure of the skeleton the paper of this author 
appears to be worked out more carefully and skilfully than 
most of the anatomical essaies about the Arachnida, 
notwithstanding, however, in spite of his numerous, perhaps 
not even always necessary quotations, it furnishes concerning 
the literature a proof that in order to be able to undertake 
the anatomy of a representative of an order, the author 
must be provided with a much greater knowledge of the 
literature and of the main forms, than is the case as a 
rule. Croneberg shows that he is ignorant of 3 works of 
the greatest importance to him since Menge (1855) in the 
little literature just about this order, namely Lubbock, J: 
Notes on the Generativ? Organs, and of the Formation of 
Eggs in the Annulosa (Philos. Transact. Vol. 151, 1861, p. 
595 -627, Pl. XVI, XVII), besides the above mentioned 
works of Simon and myself. In the work of Lubbock, p. 
614 - 619 and fig. 27—36, the structure (of the eggs and) 
of the generative organs both in the male and the female 
of Chelifer, Obisium and Chthonius is treated, and most 
interesting informations are given. In Simon’s paper he 
