FORAMINIFERA OF THE WEST OF SCOTLAND. 2(!5 



the true P. rotundata, is the most widely distributed; the long form [=P. (Guttulma) 

 cylindrica, Bornemann, 1S55, FSH. p. 347, pi. xviii. figs. 4-6] occurs in company with 

 it at several Stns. and by itself at Stn. 11. Both forms occur in the fistulose condition, 

 but this is only recorded at four Stns. 



244. Polymorphina gibba, d'Orbigny. 



Polymorphina (Globulina) gibba, d'Orbigny, 1826, TMC. p. 266. No. 20, Modele No. 63. 

 Polymorphina gibba, Brady, 1881, FC. p. 561, pi. lxxi. fig. 12a, b ; fistulose, pi. lxxiii. fig. 16. 



14 Stations. 



Generally distributed, often common and attaining very large size. This species 

 exhibits the fistulose habit at the majority of the Stns. at which it occurs, both globular 

 and compressed forms occurring in this condition. 



245. Polymorphina communis, d'Orbigny. 



Polymorphina (Guttulina) communis and problema, d'Orbigny, 1826, TMC. p. 266. Nos. 14, 15, 

 pi. xii. figs. 1-4, Modeles Nos. 61, 62. 

 „ communis, Brady, 1884, FC. p. 568, pi. lxxii. fig. 19. 



3 Stations. 



A few specimens only, all closely resembling d'Orbigny's Modele No. 62. 



246. Polymorphina compressa, d'Orbigny. 



Polymorphina compressa, d'Orbigny, 1816, FFV. p. 233, pi. xii. figs. 32-34. 



,, „ Brady, 1884, FC p. 565, pi. lxxii. figs. 9-11 ; fistulose, pi. lxxiii. fig. 17. 



16 Stations. 



Generally distributed and abundant at the Stns, notably at Stns. 3, 8, 10, and 20. At 

 the two latter Stns. excellent series of all stages and sizes, and including fistulose 

 individuals. 



247. Polymorphina cylindroides, Eoemer. (Plate 42. figs. 15, 16.) 



Polymorphina cylindroides, Roemer, 1838, NTM. p. 385, pi. iii. fig. 26. 



„ lactea, var. acuminata, Williamson, 1858, RFGB. p. 71, pi. vi. fig. 148. 



„ cylindroides, Brady, Parker, & Jones, 1870, GP. p. 221, pi. xxxix. fig. 6 a-c. 



2 Stations. 



Very rare. A good many specimens at Stn. 22 and a single one at Stn. 23. The 

 only previous British record is from Mr. Barlee's material from Stye, recorded by 

 Williamson (ut supra). 



248. Polymorphina myristiformis, Williamson. 



Polymorphina myristij'onnis, Williamson, 1858, RFGB. p. 73, pi. vi. figs. 156, 157. 



Brady, 1884, FC. p. 571, pi. lxxiii. figs. 9, 10. 



4 Stations. 



Remarkably rare, the only Stn. where more than a single specimen occurs being 

 Stn. 20. where they attained their best development. 



