562 MESSES. E. HEEON- ALLEN AND A. EAELAND ON THE 



specimens neax T. marmni Schlumberger (S. 1893, MGM. p. 62, pi. i. figs. 38-41, 

 text-figs. 7, 8) were seen, and also a single specimen resembling M. rotimda in the 

 character of its aperture. Specimens referable to T. gibha d'Orbigny (d'O. 1846, FFV. 

 p. 274, pi. xvi. figs. 22-24) occurred at many Stns. At Stn. 9 a specimen in which 

 the final chamber divided into two, each furnished with a normal aperture side by side 

 at the same extremity of the shell, was found. 



36. Miliolina iiisignis Brady. 



Miliolina insignis Brady, 1879, etc., RRC. 1881, p. 45. 



„ Brady, 1884, FC. p. 165, pi. iv. figs. 8, 10. 

 „ Wright, 1885-6, BLP. p. 319, pi. xxvi. fig. 4. 



4 Stations. 



Occurs at a few Stns. only, the best at Stn. 11. All the Kerimba specimens belong 

 to a somewhat inflated type, with a more elongated axis than is shown in Brady's 

 figure. 



37. Miliolina tricarinata (d'Orbigny). 



Triloculina tricarinata d'Orbigny, 1826, TMC. p. 299, no. 7, Modele no. 94. 

 Cruciloculina triangularis d'Orbigny, 1839, FAM. p. 72, pi. ix. figs. 11, 12. 

 Triloculina tricarinata Brady, 1864, liFS. p. 466, pi. xlviii. fig. 3. 

 Miliolina tricarinata Brady, 1884, FC. p. 165, pi. iii. fig. 17. 



„ {Triloculina~) tricarinata Egger, 1893, FG. p. 234, pi. ii. figs. 35-37. 

 tricarinata Goes, 1894, ASF. p. 114, pi. xxi. figs. 866-869. 



„ „ Chapman, 1907, TFV. p. 18, pi. ii. fig. 31. 



15 Stations. 



Generally distributed, but, on the whole, less abundant than the allied species 

 M. trigonula. Two very distinct forms occur in the material, not usually at the same 

 Stns. : (i.) the typical M. tricarinata, characterised by a somewhat long shell with 

 acute marginal edges, resembling d'Orbigny's model [ut supra) and his species 

 T. angularis (d'O. 1826, TMC. p. 299, no. 6), occurs abundantly and of very fine 

 dimensions at Stns. 11 and 12, less frequently at Stns. 5 and G, and rarely at Stns. 2 a 

 and 7 ; (ii.) a shorter, broader form with rounded marginal keels as figured 

 by Chapman [ut supra), and generally attaining a larger size than the typical 

 M. tricarinata, is much more generally distributed, but does not occur at all at 

 Stns. 11 and 12. At Stn. 2 a a single individual of the elongate type was observed 

 with rounded keels. The short round-edged type, at all Stns. where it occurs, has 

 a tendency to pass imperceptibly into M. trigonula. 



38. Miliolina tricarinata, var. plicata (Terquem). (Pi. XLI. figs. 17-22.) 



Triloculina jilicata Terquem, 1878, FIR. p. 61, pi. vi. (xi.) fig. 2. 

 13 Stations. ... 



At nearly all the Stns. M. tricarinata shows a tendency to separation of the later 



