REVISION OF PREVIOUSLY PROPOSED CLASSIFICATIONS. 3 



Whenever possible, therefore, I have avoided making them. The characters of the 

 orders, families, and often of the genera are, on the contrary, of the highest interest. 

 They show that the Pedi palpi, Aranese and Ricinnlei, and some of the Scorpiones 

 liave existed almost nnchanged down to the present day ; and that other Scorpions, 

 on the other hand, c. f/. Evhntlius, differed considerably from modern types in one 

 featnre at least, Avhich may be described as Merostomatous. Apart from this one 

 fact, and for a possibly closer connection between the spider named ArtliroJi/cosa 

 and the Amblypygous Pedipalpi than exists in modern types, these orders were as 

 sharply defined as they are now ; and unless, as is possible, the extinct orders, 

 Haptopoda, Antliracomarti and Phalangiotarbi, serA^e to bridge to a certain extent 

 the interval between the Opiliones and more primitive orders of Arachnida, it can 

 hardly be claimed that the Carboniferous fauna throws much, if any, light upon the 

 origin and nnitual relationship of existing orders of the class. In other words, 

 the available palaeontological data supplied by a study of these Carboniferous 

 Arachnida do not furnish any strong evidence in favour of the evolution of the 

 class. Hence, for the common stock whence the Epectinate Arachnida originated, 

 we must look to deposits much earlier than those laid down in the Carboniferous 

 epoch. 



II.-ANNOTATED REVISION OF PREVIOUSLY PROPOSED 

 CLASSIFICATIONS OF CARBONIFEROUS ARACHNIDA. 



1. KAitstiH, F. E., Zeitschr. deutsch. geol. Ges., 1882, pp. 55G — 561. 



Order 1. ARANEJi. 



Faiiiihj LiPHiSTiiD^. 



Genus Protolycosa, Roeiner : P. anthracfqjhila, Roemer. 

 Order 2. OPILIONES. 



Family Teogulid^. 



Genus Kreischeria, Geiuitz : K. wiedei, Geiuitz. 

 Order 3. ANTHRACOMARTI. 

 Family Aechitaebid^. 



Genus Architarbus, Scudder : A. rotundaius, Scudder ; subovalis, Wood- 

 ward ; silesiacus, Roemer. 

 Genus Anthracomartus, uov. : A. rlJUcelianus, uov. 

 Family EoPHRYNiDiE. 



Genus Eophrynus, Woodward : E. j/restvicii, Bucklaud. 

 Order 4^. SCORPIONES. 



Genus Eoscorpius, Meek and Wortheu : E. anglicus, Woodward ; carbo- 



narius. Meek and Wortlien. 

 Genus Microlabis, Corda : M. steruhergi, Corda. 

 Genus Cyclophthalmus, Corda : C. senior, Corda. 

 Genus Mazonia, Meek aud Wortheu : M. wuudiana, Meek aud Wortheu. 



