504 



Dr. L. Moysey — Coal-measure Arthropods. 



is crushed and covers and obscures the coxae of the appendages. 

 On the left side the remains of four appendages are shown by 

 their trochanters and femora; the most anterior of these is more 

 slender than the others and possibl}' represents the second appendage, 

 the posterior ones probably representing the fourth, fifth, and sixth 

 appendages (second, third, and fourth legs). The opisthosoma is 

 more perfect, but distorted by pressure. It shows the typical eight 

 egments of the body. The lateral laminae of the sixth and seventh 

 segments alone can be made out, and there is apparently no diversional 



Fig. 9. Anthracosirofritschii, Pocock. 

 Dorsal aspect. Shipley, near 

 Ilkeston, Derbyshire. Three times 

 nat. size. 



FlG. 10. Anthracosiro woodivardi, 

 Pocock. Dorsal aspect, showing 

 carapace and opisthosoma, with 

 appendages. Shipley, Derbyshire. 



line between these and their corresponding tergites. The eighth 

 segment is very much crushed, but displays clearly through its 

 substance the large ventrally placed circular anal orifice. 



The above described specimens of Anthracosiro, though varying 

 slightly in size, probably all belong to one species, and agree best 

 with A. fritschii, Pocock. It would seem best, therefore, at any 

 rate at present, to place them in that species. 



Fig. 10, Anthracosiro ivoodwardi, Pocock. Another Shipley specimen 

 is larger and more robust, and can with some certainty be referred 

 to Anthracosiro tvoodivardi, Pocock. This specimen, though greatly 

 obscured by a deposit of ferrous carbonate, shows a crushed carapace 



