620 Transactions of the Society. 



marginata Ryuier Jones, 1S72, Trans. Linn. Soc, vol. xxx. p. 57, 

 pi. xix. tigs. 34, 35. L. staphyllearia (Sch wager) Brady, 1884, ChalL 

 Kept., p. 474, pi. lxix. tigs. 8-11. L. staphyllearia (Schwager) 

 Egger, 1893, Abhandl. k. bayer. Akad. Wiss., CI. II. vol. xviii. 

 p. 331, pi. x. figs. 50, 51, 99. L. staphyllearia (Schwager) Flint, 

 1899, Hep. U.S. Nat. Mus. for 1897 (1899), p. 307, pi. liv. fig. 1. 



In the examples of this species described by Schwager, the peri- 

 phery is rounded as in L. laevigata, but in most of the figures given 

 by other authors, the margin is shown carinate as in L. marginata. 



The Malay specimens, which are very few in number, and are 

 found only in Area 2, are of the latter form. 



Kegarding the distribution of the species, Brady writes : " In the 

 North and South Atlantic L. staphyllearia has only been observed at 

 great depths, namely at four Stations, ranging from 2200 to 2750 

 fathoms ; but in the Southern Ocean and the South Pacific it occurs 

 also from time to time in shallow water near the coast-line." 



Dr. Egger records it from various ' Gazelle ' Stations ranging from 

 the W est Coast of Africa to New Guinea, and at depths varying from 

 57 to 1720 fathoms. 



The 'Albatross' locality, according to Flint, is the Caribbean Sea 

 near Aspinwall, 896 fathoms. 



Lagena marginata var. seminiformis Schwager, plate XIV. fig. 3. 



Miliola stiligera (?) Ehrenberg, 1854, Mikrogeologie, pi. xxxi. 

 fig. 6. Lagena seminiformis Schwager, 1866, Novara-Exped., Geol. 

 Theil, vol. ii. p. 208, pi. v. fig. 21. Entosolenia marginata (?) 

 Chimmo, 1878, Nat. Hist. Euplectella, p. 21, pi. vi. fig. 20. Fissu- 

 rina diptera Seguenza, 1880, Atti K. Accad. Lincei. ser. 3, vol. vi. 

 p. 332, pi. xvii. fig. 37. L. seminiformis (Schwager) Jones, 1895, 

 Pala?ont. Soc, p. 200, pi. vii. fig. 10. 



In this variety the apertural curved spines are still further 

 developed, and form a broad wing which embraces usually the whole 

 of the peripheral margin of the test. 



It is a marked peculiarity of the Malay Archipelago forms of L. 

 marginata that they show a strong tendency to a duplication of the 

 marginal carina, the space between the two keels being either void or 

 filled up with cellular matter. This, under ordinary circumstances, 

 might be considered a valid reason for treating the two forms as 

 distinct species ; but seeing that the arrangement prevails in nearly 

 every form of L. marginata and its allies, it may be looked upon 

 in the present instance as a local peculiarity, bearing in mind, how- 

 ever, the great extent of the region involved. 



Under the name of L. seminiformis, Egger * figures, but does not 



• Abhandl. k. bayer. A.kad. Wiss., CI. II. vol. xviii. pi. x figs. VJ, 87, 88. 



