604 Transactions of the Society. 



spines, whilst others add to the nauteloid a linear series of chambers, 

 as in the example of P. crispa here figured. 



Although many of the specimens of P. crispa are much com- 

 pressed, none of them have the other characters of P. macclla. 



Polystomella subnodosa Minister sp. 



Robulina subnodosa Miinster (fide Homer), 1838, Neues Jahrb. 

 fur Min., p. 391, pi. iii. fig. 01. Polystomella siibnodosa (Miinst.) 

 Reuss, 1856, Sitzungsber. K. Akad. Wiss. Wien, vol. xviii. p. 240, 

 pi. iv. fig. 51. P. subnodosa (Miinst.) Goes, 1894, K. Svenska Vet.- 

 Akad. Handl, vol. xxv. p. 102, pi. xvii. figs. 817-819. P. subno- 

 dosa (Miinst.) Fornasini, 1897, Rendic. Accad. Sci. 1st. Bologna, 

 n. s., vol. ii. pi. i. fig. 12. 



Although the form is compounded of characters taken from both 

 P. crispa and P. striatopunctata, it is subject to but little variation, 

 and the examples can usually be identified without difficulty. 



In the Malay Archipelago it is found at several Stations in both 

 Areas, and is abundant at Stations 13, 18, and 21. 



Polystomella vericulata Brady, plate XI. fig. 3. 



Polystomella verriculata Brady, 1881, Quart. Journ. Micr. Sci., 

 n. 8., vol. xxi. p. 66 ; and 1884, Chall. Kept., p. 738, pi. ex. fig. 12. 



This form occurs at most of the Stations in the Malay Archi- 

 pelago. The reticulations of the surface are much more delicate 

 than those of the example figured by Brady. Specimens of a 

 similar character occur in some sea-sand from Sagami Bay, Japan, 

 for which I am indebted to the kindness of Prof. Yokoyama of 

 Tokio. 



Brady gives two ' Challenger ' Stations, both off the west coast of 

 Australia. 



Polystomella craticulata Fichtel and Moll sp. 



Nautilus craticidatus Fichtel and Moll, 1798, Test. Micr., p. 51, 

 pi. v. figs, h, i, k. Polystomella cratiadata (F. and M.) d'Orbigny, 

 1826, Ann. Sci. Nat, vol. vii. p. 284, No. 3 ? P. iberica Schrodt, 

 1890, Zeitschr. deutsch. geol. Gesell., vol. xlii. p. 417, pi. xxii. 

 fig. 9. P. craticulata (F. and M.) Egger, 1893, Abhandl. k. bayer. 

 Akad. Wiss., CI. II. vol. xviii. p. 433, pi. xx. figs. 24, 25. 



A few fine examples occur at several Stations in both Areas. 



Under the name of P. iberica, Schrodt describes a similar form 

 from the Spanish Pliocene. If identical, this would be the first 

 record of its occurrence in the fossil condition. 



