MARGINULINA COSTATA. 235 



Characters. — A short, curved, partially spiral Nodosarine ; with smooth, more 

 or less inflated chambers, not numerous, and enlarging rapidly in jorocess of growth. 

 This little shell, which is very variable in its contours, feebly represents the far 

 more compact and symmetrical Cristellarise. 



Occurrence. — MarginuUna glabra has a wide geographical distribution, but appa- 

 rently has not been met with in high latitudes. Specimens have been taken from 

 depths ranging from 15 to 2740 fathoms. The geological range of the species is 

 extensive. Specimens have been found in the Lias of England and the Continent ; 

 in the Cretaceous formations generally, both English and foreign; in the London 

 Clay (Eocene), in the Oligocene of Germany, in the Miocene of Italy and Vienna ; 

 and in the Pliocene of Piedmont and Garrucba (South Spain). So far as the Crag 

 is concerned, we have nothing to add to the record in Part I of the Monograph. 



2. Marginulina COSTATA (Batsch), 1791. Plate I, fig. 21. (If. rajylianus.) 



Part 1, 1866, page 70 {Marginulina raphanus) ; Append. I and II, Tables, No. 46. 

 Additional synonyms : 



Orthoceratia in longum striata, subconica, «fec., Soldani,^ 1791. Testaceogr., vol. i, 



part 2, p. 91, pi. xeiv, figs, p, q, x, y. 



Orthoceras Suhlituus, testa teres, striata. &c., Soldani, 1791. Ibid., p. 98, pi. civ, 



figs. !-,&[= Ilarginulina suhlituus, 

 d'Orb.]. 



Nautilus (Oethoceeas) costattjs, Batsch, 1791. Conchyl. Seesandes, p. 2, 



pi. i, figs. 1 a—g. 



Maeginulina suBLiTUUS, d'Orbiffmj, 1826. Ann. Sci. Nat., vol. vii, p. 259, No. 9. 



— eaphanus, i^esAayes, 1830. Hist. Nat. Vers, vol. ii, p. 418. 



— — Ehrenberq, 1838. Abhandl. k. Akad. Wiss. Berlin for 



1838, p. 141, pi. i, fig. 2. 



— — Cuvier, 1836-46. Eegue Animal, vol. ix, p. 35 ; vol. x, 



pi. XV, fig. 10. 



— — Michelotti, 1841. Mem. iSoc. Ital. Sci., vol. xxii, p. 279. 



1 Soldani suggests that some of the specimens figured as " M, n, &c.," [m — z ?] in plate xciv 

 might be such as with Linnaeus would be termed '' Raphani, Raphanistri, et Rapistriy Soldani 

 thinks that figs, p, q, and even t may be varieties of his " Orthoceras Corniculum." The nominal 

 references in 'Ann. Mag. Nat. Hist.,' September, 1871, p. 1G3, and in the 'Challenger' Eeport, 

 p. 528, for "N, p, Q, E, X, Y," are not quite correct. m, n, e, and y belong to Nodosaria 

 raphanus; s to D. obliqiia ; t and z to iV. raphanistrum. 



31 



