FORAMINIFERA OF THE ATLANTIC OCEAN. 39 



LAGENA MONTAGUI (Alcock). 

 Plate 7, figs. 1-3 ; pi. 8, fig. 7. 



Entosolenia montaijul Alcock, Proc. Lit. Pliilos. Soc. Manchester, vol. 4, 



1865, p. 206. 

 Lagena squamosa Montagu, var. montagui Weight, Irish Nat., vol. 9, 1900, 



p. 54, pi. 2, fig. 2. — Heron-Allen and E.viiland, Joiirn. Roy. Micr. Soc, 



1911, p. 321, pi. 10, figs. 14-16 ; Proc. Roy. Irisli Acad., vol. 31, pt. 64, 



1913, p. 76, pi. 7, figs. 11, 12. 



This variety or species is known from about the region of the 

 British Isles. The following notes are from Heron-Allen and Ear- 

 land on their Clare Island specimens, which are here figured. 



"An occasional specimen at six stations, varying as usual consid- 

 erably in size and contour. 



" The exact nature of this curious variety is extremely doubtful. In 

 the ordinary course such distorted specimens would be regarded as 

 ' sports ' and set aside ; but the general uniformity of their nature, 

 and their wide distribution, coupled with the fact that no other 

 species of Lagena presents similar characteristics, make it certain 

 that some zoological significance is attachable to their occurrence. 

 Possibly they represent some stage in the life- history of the species 

 with which we are at present unfamiliar. 



" We have no data to add to the information already furnished by 

 Mr. Wright. The most characteristic Clare Island specimens cor- 

 respond exactly with Alcock's original description of the compressed 

 form ' resembling a dried fig.' " 



LAGENA MILLETTII Chaster. 



Plate 7, fig. 5. 



Lagena millettii Chaster, Fir.st Rep. Southport Soc. Nat. Sci., 1890-1891 

 (1892), p. 61, pi. 1, fig. 10.— Balkwill and Millett, Rec. Foram. Gal- 

 way, 1908, p. 5. — Hlron-Allen and Eakland, Proc. Roy. Irish Acad., 

 vol. 31, pt. 64, 1913, p. 83, pi. 6, fig. 10.— Peabcey, Trans. Roy. Soc. 

 Edinb., vol. 49, 1914, p. lOlS. — Heron-Allen and Earland, Journ. Roy. 

 Micr. Soc, 1916, p. 45. 



Specimens of this species seem to be rare about the British Isles. 

 They are recorded by Pearcey from the South Atlantic in deep water. 

 It apparently does not occur in the western Atlantic. 



LAGENA ORBIGNYANA (Seffiienza). 



Entosolenia marginata Williajison (part) (not Lagena marginata 

 ("Walker and Boys)), Rec. Foram. Great Britain, 1858, p. 9, pi. 1. 

 figs. 19, 20. 



Fissurina orhlgnyann Seguenza, Foram. mon. mioc Messina, 1862, p. 66, 

 pi. 2, figs. 24, 26. 

 56148—23 4 



