Nomenclature of the Foraminifera. 481 



Calcarina Defranciij D'Orb., from the Red Sea (Ann. Sc. Nat. 

 vol. vii. p. 276. no. 3), is a delicate compressed variety of Calca- 

 rina Spenglerif with the spire apparent. Spengler figures this 

 elegant form [op. cit. pi. 1. f. 3 a-d) from Coromandel. 



Calcarina Calcar (D'Orb. Ann. Sc. Nat. vii. p. 276. no. 1 ; and 

 Modeles, no. 34. 2^ livraison), from Martinique, Isle of France, 

 and Madagascar, is a variety of the same, with shorter spines. 

 Rotalia armata^ D^Orb. (Ann. Sc. Nat. vii. p. 273. no. 22 ; and 

 Modeles, no. 70), from Cayenne and Martinique, and fossil at 

 Chavagnes (Maine-et-Loire), near Nantes, and near Bordeaux, is 

 a short-spined variety of the same species. 



D'Orbigny gives three other names to forms of Calcarina, 

 without figures or descriptions ; they are from Port Jackson, the 

 Isle of France, Rawack, and the Mariannes Islands. 



Deshayes's Calcarina rarispina (LyelPs 'Manual,' 5th edit, 

 p. 228. f. 236), fromGrignon, is the same as Rotalia armata,WOrh. 



Calcarina is a subgeneric form of Rotalia, 



Calcarina Spengleri has a wide distribution in the Mediterra- 

 nean and tropical seas, and occurs fossil in the Eocene Tertiaries 

 of France and in the Chalk of Maestricht. 



[A form that has been mistaken for the Calcarina Spengleri, 

 but more allied to the Sponges in its mode of growth, occurs 

 fossil at Palermo, San Domingo, &c., and recent at the Fiji Isles 

 and New Zealand.] 



(I.) Nautilus unguiculatus (3372. 31), founded on Spengler's 

 specimen (Kong. Danske Vid. Selsk. Skrift. Nye Saml. vol. i. p. 381 . 

 pi. 2. f. 9 a), is a six-spined Polystomella crispa, from the East 

 Indies. This beautiful variety (P. Regina, D'Orb. ) is not common. 

 It occurs fossil in the Vienna Tertiaries, and in the Eocene beds at 

 Baljik, Bulgaria, on the Black Sea. (See Wood's Cat. pi. 13. f. 18.) 



(J.) Nautilus Lituus (3372. 13), figured and described by 

 Spengler (as Nautilus rectus), from the Red Sea, is a delicate 

 Peneroplis with narrow subcylindrical chambers throughout, — 

 forming a small crozier-like body, instead of the flatter and 

 bonnet-like shell of P. planatus (see Wood's Cat. pi. 13. f. 20) . 

 It is the Spirolina cylindracea of Lamarck, and is common in 

 the Mediterranean and Indian Seas, and in the Grignon Ter- 

 tiaries. Spengler has figured two other intermediate varieties of 

 Peneroplis^{op. cit. pi. 1. f . 4, 5), both from the Red Sea. P. 

 planatus i^idely distributed in the warmer seas. 



{K.) Nautilus incequalis (3373.20), founded on Spengler's figure 

 and description (Nautilus rectus), is a straight, attenuated form 

 of Vertebralina [Articulina) striata. It is from the Red Sea. (See 

 Wood's Cat. pi. 13. f. 32.) This uniserial form of Vertebralina 

 is common in the Red Sea, and in the Tertiary beds at Baljik 

 and Grignon. 



(L.) Serpula nautiloides (S7S9. 1) is undoubtedly, as shown by 

 Ann. ^ Mag. N Hist. Ser. 3. Vol. iii. 31 



