494 Transactions of the Society. 



L. lucida (Will.) Fornasini, 1888, Boll. Soc. Geol. TtaL, p. 47, pi. iii. 

 fig. 5. L. (Fissurina) laevigata (Keuss) Egger, 1893, Abbandl. k. 

 bayer. Akad. Wiss., CI. IT. vol. xviii. p. 330, pi. x. figs. 64 ; (55. 

 L. marginata (Montagu) Haeusler, 1893, Abbandl. schweiz. Pal. 

 G-esell., vol. xx. p. 18, pi. i. figs. 65, 6fi. L. laevigata (Eeuss) Jones, 

 1895, Palreont. Soc, p. 197," pi. vii. fig. 14. L. laevigata (Keuss) 

 Madsen, 1895, Meddeleiser fra Dansk Geol. Foiening, No. 2, pp- "4 

 and 195, pi. fig. 3. L. laevigata (Keuss) var. calostoma Fornasini, 

 1901, Mem. R.^\ccad. Sci. 1st. Bologna, ser. 5, vol. ix. p. 48, fig. 2 a r,. 

 Tbis widely distributed form is found in more or less abundance 

 at nearly all of the Malay Arcbipelago Stations. It varies in the 

 usual manner from globular to elongate, and is of various degrees of 

 compression, but in all cases the margin is marked by a narrow band 

 of clear sbell-substance. 



Lagena laevigata Keuss sp. var. acuta Keuss sp., 

 plate VIII. fig. 10. 



Entosolenia marginata var. lucida Williamson, 1858, Kec. Foram. 

 Gt. Britain, p. 10, pi. i. fig. 23. Fissurina acuta Keuss, 1862, 

 Sitzber. k. Akad. Wiss. Wien, vol. xlvi. p. 340, pi. vii. fig. 90, 

 and F. apiculata, p. 339, pi. vi. tig. 85. Lagena acuta (Keuss) 

 Fornasini, 1888, Boll. Soc. Geol. Ital, vol. vii. p. 47, pi. iii. fig. 6. 

 L. acuta (Keuss) Egger, 1893, Abbandl. k. bayer. Akad. Wiss., 

 CI. II. vol. xviii. p. 332, pi. x. figs. 74, 75. L. acuta (Reuss) var. 

 saccidus Fornasini, 1901, Mem. K. Accad. Sci. 1st. Bologna, ser. 5, 

 vol. ix. p. 49, pi. fig. 3. 



Tbis occurs in two forms. In one of these, as in L. laevigata, the 

 margin is rounded and marked by a band of clear sbell-substance. 

 The" other is the variety described by Brady in the 'Challenger' 

 Keport,* and stated by him to be "not quite typical, and might 

 with equal propriety be treated as a mucronate example of Lagena 

 marginatay 



In the Malay Archipelago the variety more nearly corresponding 

 with L. laevigata is the more common and more generally distributed; 

 the carinate variety is more restricted in its range, and is found most 

 abundantly in Area 2. 



Lagena lucida Williamson sp. 



Entosolenia marginata var. lucida Williamson, 1848. Ann. and 

 Mag. Nat. Hist., ser. '2, vol. i. p. 17, pi. ii. fig. 17. Lagena lucida 

 (Will.) Balkwill and Millett, 1884, Journ. Micr., vol. iii. p. 80, pi. n. 

 fig. 7, and pi iii. figs. 4, 5. 



• Chall. Rept., 1884, p. 474, pi. lix. fig. 6. 



