Vol. 67.] FROM THE PARADOXIDES BEDS OF COMLEY. 309 4 



Plate XXVI. 



Ptychoparia (Liostracus) pulchella, sp. nov. Shoot-Rough-Road Flags, 

 Comley. (See p. 293.) 



Pig. 1. Cranidimu [353] : a, seen from above ; b, from the side ; 0, from behind ; 

 all X 2. 

 2. Free cheek [372], referred with reserve to this species ; X 2. 



Ptychoparia (Liostracus) sp. indet. Shoot-Rough-Road Flags, Comley. 



Fig. 3. Imperfect cranidium [1113], the only specimen known: a, seen from 

 above ; b, from the side ; c, section across cheeks and glabella ; all 

 X 2. (See p. 295.) 



Ptychoparia (Liostracus) sp. indet. Hill-House Grits, Comley. (See p. 294.) 



Fig. 4. Imperfect cranidium [100] : a, seen from above ; b, from tho side ; 

 c, from behind ; all X 2. 



Brachiopoda. 



Lingulclla cf. ferrugiiiea Salter. (See p. 300.) 



Fig. 5. Interior of pedicle-valve, somewhat exfoliated [625], X 4. 



6. Pedicle-valve, same individual [624] : a, internal cast ; b, longitudinal 

 section ; both X 4. 



Lingulella spp. indet. (See p. 301.) 



Fig. 7. Partly exfoliated fragment [1033], X 4. 



8. a, interior of a brachial valve [710] ; b, longitudinal section ; both X 4. 



Acrothele cf. granulata Linnarsson. (See p. 302.) 



Fig. 9. a, fragment of pedicle-valve [682], X 8 ; b, surface-granulation, greatly 

 enlarged. 



Acrotreta (Linnarssonia) sagittalis Salter. (See p. 302.) 

 Fig. 10. Pedicle-valve [705] : a, interior ; b, longitudinal section ; both X 4. 



Acrotreta aff. socialis Linnarsson. (See p. 303.) 



Fig. 11. Pedicle-valve [1025]: a, exterior; b, side view; both X 4. 

 12. Group of three brachial valves [690], X 4. 



Acrotreta aff. socialis Linnarsson? (See p. 303.) 

 Fig. 13. Pedicle-valve [637] : a, exterior ; b, side view : both X 4. 



Billingsella lindstra>mi Linnarsson, var. salopiejisis, nov. (See p. 303.) 



Fig. 14. Pedicle-valve [1022] : a, exterior, X 2 ; b, surface, X 5 ; c, section of 

 costas, X 5. 



15. Pedicle-valve [1008] : a, internal cast ; b, side view; both X 2. 



16. Brachial valve [1028] : exterior, X 2. 



17. Brachial valve [1151]: a, internal cast; b, longitudinal section; 



c, interior from a plasticine mould ; all X 2. 



Billingsella lindstrozmi Linnarsson, var. (See p. 304.) 



Fig. 18. Pedicle-valve [671]: a, exterior; b, longitudinal section; both X 2; 

 c, surface, X 5 ; d, section of costae, X 5. 

 19. Brachial valve [665] : a, exterior ; b, transverse section ; both X 2. 



