FOKAMINIFEEA OF THE ATLANTIC OCEAN. 137 



in the later portion where they are slightly depressed, only slightly 

 oblique ; wall ornamented by very numerous fine longitudinal costae 

 which are continuous across the chambers and run from the initial 

 end to the aperture, increasing in number as the size of the test in- 

 creases, becoming finer toward the apertural end; aperture fairly 

 large, at one side, radiate. 



Length up to 7 mm. 



Distributio7i. — Type-specimen from Challenger Bank, off the Ber- 

 mudas, collected by Owen Brj-ant, collection of J. A. Cushman. 



VAGINULINA LINEARIS (Montagu). 



Plate 16. figs. 7-9. 



Nmitilus linearis Montagu, Test. Brit. Suppl., 1808, p. 87, pi. 30, fig. 9. 



Dentalina legumen (Linnaeus), var. linearis Williamson, Rec. Foraro. 

 Great Britain, 1858, p. 22, pi. 2, figs. 46-48. 



Vaginulina linearis Parker and Jones, Philos. Trans., vol. 155, 1865, p. 

 343, pi. 13, figs. 12, 13.— H, B. Brady, Rep. Voy. Challenger, Zoology, 

 vol. 9, 1884, p. 532, pi. 67, figs. 10-12.— Balk will and Wright, Proc. 

 Roy. Irish Acad., ser. 2, vol. 3, 1882, p. 548 ; Trans. Roy. Irish Acad., 

 vol. 28, 1885, p. 344.— H. B. Brady, Journ. Roy. Micr. Soc, 1887, p. 

 910.— Pearcey, Trans. Glasgow Nat. Hist. Soc, vol. 2, 1890, p. 178.— 

 Wright, Pi*oc. Roy. Irish Acad., ser. 3, vol, 1, 1891, p. 484; Irish Nat., 

 vol. 11, 1902, p. 213.— Goiis, Kongl. Svensk. Vet. Akad. Handl., vol. 

 25, No. 9, 1894, p. 66, pi. 12, fig. 664.— Heeon-Axlen and Earland, Proc. 

 Roy. Irish Acad., vol. 31, pt. 64, 1913, p. 98 ; Trans. Linn. Soc. London, 

 ser. 2, vol. 11, 1916, p. 26L 



Description. — Test elongate, somewhat curved, initial end pointed 

 with a short spine, whole test somewhat compressed ; chambers com- 

 paratively few, about 10 in a fully grown specimen, inflated, es- 

 pecially toward the apertural end, earlier chambers more com- 

 pressed; sutures distinct but only depressed toward the apertural 

 end ; surface ornamented by numerous somewhat oblique longitudinal 

 lines, usually not extending out on to the last- formed chamber; 

 aperture at the dorsal side, somewhat projecting, radiate. 



Length up to about 3 mm. 



Distribution. — This species described by Montagu from the shores 

 of the British Isles seems to be restricted to the European side of 

 the North Atlantic. It has been recorded by numerous authors 

 from this general region. Its northernmost record is that of Parker 

 and Jones from between Drontheim and North Cape. Some of the 

 records given by Wright oft' the British Isles are as much as 50 

 fathoms (91 meters). In the Challenger report Brady mentions it 

 from the Shetlands and Hebrides at depths of 15-90 fathoms (27- 

 1G5 meters) where it is common, and states that it also occurs off 

 the coasts of Norway and France, but that the Challenger material 



