264 Transactions of the Society. 



P. communis var. acuplacenta (J. and C.) Silvestri, 1899, Mem. 

 rontif. Accad. Nuovi Lincei, vol. xv. p. 233, pi. iv. fig. 2. P. com- 

 munis (d'Orb.) Flint, 1899, Eep. U.S. Nat. Mus. for 1897 (1899), 

 p. 319, pi. lxvii. fig. 6. P. communis (d'Orb.) Egger, 1899, Abhandl. 

 k. bayer. Akad. Wiss., CI. II. vol. xxi. p. 128, pi. xvii. figs. 36, 37. 

 P. communis (d'Orb.) Fornasini, 1900, Mem. E. Accad. Sci. 1st. 

 Bologna, ser. 5, vol. viii. p. 387, fig. 37. 



Is not common nor widely distributed, but the examples are 

 more robust than those of the other species of the genus found in 

 the Malay Archipelago. 



Polymorphina problema d'Orbigny. 



Polymorphina {Guttulina) problema d'Orbigny, 1826, Ann. Sci. 

 Nat., vol. vii. p. 266, No. 14 ; Modele, No. 61. Bulimina pyrula 

 (d'Orb.) Silvestri, 1893, Atti e Eendic. Accad. Sci. Lett, e Arti dei 

 Zelanti e P.P. dello Studio di Acireale, vol. v. p. 12, pi. v. figs. 79, 

 80. Polymorphina problema (d'Orb.). Jones, 1895, Palseont. Soc. 

 p. 267, pi. v. fig. 23 ; pi. vi. fig. 12. P. problema (d'Orb.) Burrows 

 and Holland, 1897, Proc. Geol. Assoc, vol. xv. p. 46, pi. ii. fig. 17. 

 P. problema (d'Orb.) Egger, 1899, Abhandl. k. bayer. Akad. Wiss., 

 CI. II. vol. xxi. p. 129, pi. xvii. figs. 33-35. 



The specimens which can be distinguished from P. communis 

 are few and insignificant, and seem to be confined to a few Stations 

 in Area 1. 



Polymorphina oblonga d'Orbigny. 



Polymorphina oblonga d'Orbigny, 1846, For. Foss. Vienne, 

 ]). 232, pi. xii. figs. 29-31. P. oblonga (d'Orb.) Terquem, 1882, 

 Mem. Soc. Geol. Fr., ser. 3, vol. ii. p. 145, pi. xxiii. fig. 9. P. 

 oblonga (d'Orb.) Chaster, 1892, First Eept. of the Southport Soc. of 

 Nat. Sci., 1890-1891 (1892), p. 64, pi. i. fig. 13. P. oblonga 

 (d'Orb.) Egger, 1893, Abhandl. k. bayer. Akad. Wiss., CI. II. 

 vol. xviii. p. 309, pi. xi. figs. 9, 10, 24. P. oblonga (d'Orb.) Flint, 

 1899, Eep. U.S. Nat. Mus. for 1897 (1899) p. 319, pi. lxvii. fig. 5. 



This form is very rare in the Malay Archipelago and has been 

 observed only at Station 22 in Area 2. 



Of its occurrence in the recent condition, Brady states that 

 its distribution is similar to that of the allied forms P. problema 

 and P. compressa. Chaster records it from the neighbourhood of 

 Southport. Egger's 'Gazelle' Stations are Table Bay, 50 fathoms; 

 Mauritius, 225 fathoms ; and West Australia, 196 fathoms. Flint 

 records it from off the coast of Georgia and North Carolina, 276 

 and 168 fathoms. 



