358 PROF. EHRENBERG ON ANIMALS OF THE CHALK 
6. Rotalia turgida, Pi. VI. fig. 4. Syn. Planulina turgida, 1838. 
Recent near Cuxhaven; fossil in the white chalk of England, 
France, Prussia, and Denmark ; in the chalk marls of Oran, and in 
we 
the compact chalk of Egypt and Arabia. Size q'y'". 
7. Textilaria acieulata, Pl. VI. fig. 5. Syn. Textularia aciculata?, 
1838. 
Recent near Cuxhaven; fossil in the white chalk of Russia, Den- 
mark, England, and Sicily, and in the chalk marls of Greece, and | 
also in the compact chalk of Egypt and Arabia. Size 35'". 
8. Textilaria globulosa. Syn. Textularia globulosa, 1838. 
Recent in the North Sea; fossil in the white chalk of all Euro- 
pean countries, from Wolsk to Ireland; likewise in the chalk marls 
of Sicily, Oran, and Greece, and in the compact chalk of Egypt and 
1 ; Litt 
Arabia. Size 3,"". 
b. InrusoriA with siliceous lorice. 
9. Achnanthes pachypus, Montague MS. Syn. Achnanthes brachy- 
pus, Montagne, Annales des Sci. Nat. 1837, vol. vili. p. 348. A. ba- 
cillis striatis minimis, bis latioribus quam longis aut ovatis, singulis 
mediis levius inflexis, a dorso apice utroque rotundatis, pedicello bre- 
vissimo crasso. 
Dr. Montagne first observed this new species on a Conferva from 
Callao in Peru, which he calls Conf. allantoides, brought to Europe 
by D’Orbigny. Breadth of the bacille >4,"". 
10. Actinocyclus biternarius, n. sp. A. sepimentis carens, disci subti- 
liter punctati radiis senis. 
Fossil in the chalk marl of Oran and Caltanisetta; recent in the 
North Sea, near the island Tjérn. Diameter gi, — qy'". 
11. Actinocyclus (Actinoptychus) senarius, Pl. VIII. fig. 1. a-e. 7 
Actinocyclus senarius, 1838. 
Fossil very numerous in the chalk marl of Oran, Caltanisetta, and 
Greece; likewise recent, very numerous in the North Sea near 
we pace 3 : rin 
Cuxhaven, Christiania, and Tjorn. Diameter 91; — 3'". 
12. Actinocyclus septenarius. Syn. Actinocyclus septenarius, 1838 
A. sepimentis carens, disci subtiliter punctati radiis septem. 
Fossil in the chalk marls of Cebaningtins Oran, and Zante; livin 
in the Cattegat. Diameter of the dises gy — 3/5". 
13. Actinocyclus octonarius. Syn. Actinocyclus octonarius, 1838. 
Fossil in the chalk marls of eee and Oran; recent in th 
Cattegat. Diameter of dises 5 — ay". 
* 
14. Actinocyclus nonarius, n.sp. A. sepimentis carens, disci subti 
liter punctati radiis novem. 
