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differences in the shape of galea in species of Chelifer, 
Garypus and Olpium, but he has not always been 
certain in determining the sex. 
In several species of Chelifer a very great and 
obvious sexual difference, known long ago, is found in 
the tergites of the abdomen, and in all species of 
Chelifer and Chernes, examined by me an almost always 
overlooked difference is seen on the large chelæ. The 
fingers of the females, when tightly closed, are touching 
each other the whole length, while the fingers of the 
males are touching each other only at the basis and 
in a short extent at the apex, but in the remaining 
space they are gaping slightly in some species and very 
much in other species, as Chelifer depressus (Arthr. 
Dan. p. 529). This gaping is slight, but yet visible in 
the males of the Danish species of Chernes; the greatest 
gaping I have found in a species of Lamprochernes which 
does not appear to be rare in the Brazils, where- it is 
living in small colonies under the elytra of large beetle 
Acrocinus longimanus F. (fam. Longicornia). Its 
occurrence on this animal has already been mentioned 
by H. Hagen in the year 1859; in Zool. Anzeiger of 
30. Jan. 1893, p. 37, again by F. Leydig, who has 
determined it as Chelifer americanus Degeer. 
VII Araneee. 
Gaubert spends (op. cit.) more than 20 pages on 
the representation of the lyriform organs in the re- 
presentatives of the different families of this order. His 
representation is much more complete here than by the 
other orders; he has, nevertheless, overlooked a not 
inconsiderable number of fissures. It is not my inten- 
tion to follow him in his investigation of a series of 
