74 EXPLANATION OF PLATE 46^. 



shell, in this position, must have given perfect 

 protection to the soft parts of the body enclosed 

 within. (Scharf.) 



Fig. 4. Side view of Calymene macrophthalmus, rolled 

 up, with its tail closed on its shield. (Curtis.) 



Fig. 5. Front view of another specimen of C. Macroph- 

 thalmus, rolled up like Fig. 4. The Eyes in fossils 

 of this species are usually well preserved, and their 

 facets large. (Curtis.) 



Fig. 6. Asaph us tuberculatus ; a highly ornamented 

 species from the Transition lime-stone of Dudley ; 

 in the collection of Mr. Johnson, of Bristol. The 

 back alone is composed of flexible plates. (Curtis.) 



Fig. 7. Asaph us De Buchii, from the Transition slate of 

 Llandilo; the tail is surrounded with an inflexible 

 Margin, slightly fluted. (Brongniart.) 



Fig. 8. Restoration of Paradoxoides Tessini, (Brong- 

 niart. Hist. Nat. de Crustaces, PL IV. Fig. 1.) 



Fig. 9. Ogygia Guettardii, (Brongniart, Hist. Nat. de 

 Crustaces, PI. III. Fig. 1.) 



Fig. 10. Highly ornamented tail of Asaphus gemmu- 

 liferus, (Phillips), from the Transition lime-stone of 

 Dublin, magnified four times. (Curtis.) 



Fig. 11. Tail of Asaphus caudatus, from Carboniferous 

 lime-stone, at Beadnell, Northumberland ; in the col- 

 lection of the Geol. Soc. of London. (Original). 



Fig. 12. Tail of Asaphus caudatus, from Tansition 

 lime-stone, near Leominster ; in the Oxford Museum. 



Plate 46'. V. I. p. 406. 



Fig. 1. Back of a fossil Scorpion of a new genus (Cy- 

 clophthalmus) found by Count Sternberg in the 

 Coal formation of Bohemia, in a quarry of sandy 



