66 



CARBONIFEROUS ENTOMOSTRACA. 



18. Suboblong; humped. Cytherella dromedaria, G. S.Brady, 1880 . 



14. Suboblong, with anterior margin, and pinched. Cytherella? 



Ulmensis, Giimbel, 1871 . . . . 



15. Oblong. Cytherella fraterna, Reuss, 1867 . 



16. Oblong (broad). Cytherella scotica, G. S. Brady, 1868 



17. Oblong; with pit. Cytherella puichra, G. S. Brady, 1865 and 



1880. (Not quite cuneiform in profile) . 



18. Oblong. Cytherella Murchisoniana, Jones and Kirkby, 1875 



19. Oblong (narrow). Cytherella solenoides, Reuss, 1845 . 



20. Oblong (narrow) and pinched. Cytherella parallela, Reuss, 1845 



and 1850; Alth, 1850; G. S. Brady, 1878 



21. Oblong (narrow). Cytherella laevis, Williamson, 1847 (? = 



Muensteri) . . . . . 



22. Oblong (narrow). Cytherella Muensteri, Roemer, 1838; Bosquet, 



1850 ; Jones, 1856 . . . . 



23. Oblong and pinched in. Cytherella inflexa, Egger, 1858 



24. Oblong and pinched in. Cytherella Eischeri, Terquem, 1878 



25. Suboblong, but curved. Cytherella Gingensis, Waagen, 1868 



26. Subreniform. Cytherella reniformis, Bosquet, 1847 



Recent. 



Jurassic. 



Trias. 



Recent. 



Recent. 



Carboniferous. 



Cretaceous. 

 \ Cretaceous and 

 ) Tertiary. 



Cretaceous 



Tertiary. 

 Tertiary. 

 Tertiary. 

 Jurassic. 

 Cretaceous. 



I. Surface even. A. Smooth. §2. Outline elliptical and suboblong ; profile not 

 cuneiform, but more or less lanceolate. 



1. Elliptical. Bosquetia robusta, Brady, R. and C, 1874 . . Post-tertiary. 



2. Elliptical. Cytherella ? ov alls, Stottard, 1861 . . Carboniferous. 



3. Elliptical. Cytherella ? amygdaloides, in part, Cornuel, 1846 . Neocomian. 



4. Suboblong, margined, and slightly pinched. Cytherella? Mantel- 



liana, Jones, 1848 ..... Cretaceous. 



5. Subovate. Cytherella? inflata, Miinster, 1830; Jones and Kirkby, 



1865 . . . . . . Carboniferous. 



6. Subovate. Cytherella Tatei, Jones, 1884 . . . Carboniferous. 



I. Surface even. B. Punctate. 



Outline ovate, subovate, suboblong, and oblong; profile wedge-like. 



1. ElHptical. Cytherella elliptica, G. S. Brady, 1878 



2. Elliptical. Cytherella polita. G. S. Brady, 1869 



Tertiary. 

 Recent. 



