144 Tra7%sactions of the Society. 



reference that " although it is probable that P. acuminata might 

 be found wherever P. gutta occurs, it is, so far as our present 

 knowledge goes, a rare species, and, like its close ally, unknown in 

 a recent condition." It may be that the former is the microspheric 

 and the latter the megalospheric form. 



Pohjmorphina gutta d'Orbigny. (PL V, fig. 12.) 



Polymorpliina (Pyrulina) gutta d'Orbigny, 1826, Ann. Sci. Nat., vol. vii, 



p. 267, No. 28, pi. xii, figs. 5, 6, Modele No. 30. 

 P. gutta Jones, Parker and Brady, 1866, Monogr. Crag. Foram. Pal. Soc, 



vol. xix, p. 256, pi. i, figs. 46, 47. 

 Bostrolina, sp. von Schlicht, 1869, Foram. Septar. Pietzpuhl., p. 72, 



Nos. 408, 409, 411, pi. xxvi, figs. 1-6, 10-12. 

 Pyrulina, sp. id. ibid, Nos. 423, 424, pi. xxv, figs. 55, 56 ; pi. xxvii, figs. 13-15. 

 Polymorpliina gutta Brady, Parker and Jones, 1870, Trans. Linn. Soc, 



vol. xxvii, p. 218, pi. xxxix, fig. 3. 



If I am right as regards P. acuminata, most likely I am also 

 right in putting these forms under P. g^Uta, as Brady, Parker and 

 Jones speak of their probable association. There are four tests, 

 two of which are ratber stouter in build than the others. 



Polymorpliina, sp. Fistula form. 



There is a single specimen of fair size. The inflated, fistulose 

 chamber is roughly globular and spinous, with a few straight 

 tubular processes also covered with minute spines. The body of 

 the test, which is only half revealed, is nearly round in section ; 

 the chambers are only very slightly inflated, and they also bear 

 numerous short, fine spines. 



EXPLANATION OF PLATE V. 



FIGS. 



1 (?), 2, 3. — Marginulina glabra d'Orbigny. x 50. 

 4, 5. — Vagijiulina costata (Cornuel). x 75. 



6, 7. — V. rheophagica sp. n. Fig. 6, lateral view. Fig. 7, back view. 

 8. — Cristella7-ia variabilis Reuss. x 50. Non-carinate form. 

 9.—C. dentata Karrer (?). x 75. 

 10, 11. — Polymorpliina acuminata d'Orbigny. x 50. 



12.— P. gidta d'Orbigny. x 50. 

 13, 14. — Polymorphina (?) complcxa Sidebottom. Fig. 14, oral view, x 50. 

 15, 16. — Dimmphina millettii. Fig. 16 is drawn from a Seycbelles Island 

 specimen, x 50. 

 17. — D. lingulinoides Millett. x 75. 

 18-22. — D. nodosaria d'Orbigny. x 50. 



23. — Uvig erina porrecta ^r&dLj, \&r. fimbriata yair. uov. x 75. 

 24. — Sagrina columellaris Brady, x 50. 

 25-27. — Globigerina dutertrei d'Orbigny (?) Fig. 25, superior view. Fig. 26, 



inferior view. Fig. 27, edge view, x 75. 

 28, 29. — Spirillina denticulo-granulata Cbapman, var. Fig. 28, superior view . 

 Fig. 29, inferior view, x 75. 



