THE GENERA AND SPECIES OF SYMPHYLA. 5 



order, four European species are at present admitted, but one 

 of them, S. Isabellas, is collective; a fifth species, Scol. 

 raicrocolpa, Muhr, has incorrectly been withdrawn by 

 Muhr himself one year after its erection, and subsequently 

 by Latzel and the other authors. In North America four 

 species have been found, and two of them described as new, 

 viz. S, latipes, Scud., which must be cancelled, and S. 

 gratise, Ryder, which has been withdrawn by Latzel as 

 synonymous with the European S. nivea, Scop., but I 

 cannot decide if this withdi'awing is correct. From other 

 parts of the world no new species has been described. The 

 result is that of the species established from the whole world 

 and admitted as valid by the best authors in papers since 

 1884 (this year included), only three European species have 

 been described so that they can be recognised with tolerable 

 certainty, and a fourth one is collective. It may, perhaps, be 

 admitted that in the 138 years elapsed since S. nivea was 

 described the progress of our study of the forms of this highly 

 interesting order, which certainly contains at least more than 

 100 species, has been rather slow. 



II. The Material and its Treatment. 



The material examined by me is comparatively very rich, 

 consisting of some hundreds of specimens collected in several 

 countries of Europe, in Algeria and the Cape Colony, in 

 Texas, in various countries in South America, as Venezuela, 

 Chile, and southern Brazils to southern Patagonia, in Java, 

 Sumatra, and Siam ; twenty-four species are described.^ The 

 major part of the specimens and species belong to the 

 Copenhagen Museum ; most of the animals from Europe 

 have been captured by the author, who collected seven species 

 in Calabria in May and June, 1893, and one species besides in 



1 Two new species, one from Temuco in Chile and one from tlie island of 

 Koli Chang (Gulf of Siam). '"^^ve been omitted ; of each I had only one badly 

 preserved specimen. 



