554 MESSES. E. IIEEON-ALLEN AND A, EAELAND ON THE 



17. Spirolocnlina excavata d'Orbigny. 



Spirolocidina excavata d'Orbigny, 1846, FFY. p. 271, pi. xvi. figs. 19-21. 

 Brady, 1865, RPND. p. 93, pi. xii. fig. 1. 

 „ ,, Terquem, 1875, etc., APD. 1875, p. 38, pi. v. fig. 17. 



,, angidosa Terquem, 1878, FIR. p. 53, pi. x. (v.) fig. 7. 



„ excavata Brady, 1884, FC. p. 151, pi. ix. figs. 5, 6. 



Jones, Parker, & Brady, 1866, etc., MFC. 1895, p. 106, pi. v. fig. 2, 

 and text-fig. 2. 

 „ „ Schlumberger, 1893, MGM. p. 59, pi. iii. fig. 68 and text-fig. 1. 



„ „ Heron-Alleu & Earland, 1908, etc., SB. 1909, p. 310 ; 1910, p. 404, 



pi. vi. tig. 3. 



16 Stations. 



Universally distributed and often abundant. There is an extraordinary range of 

 variation in the Kerimba specimens. The typical S. excavata has a nearly flat 

 peripheral edge, but the bulk of our specimens are very rounded, resembling in this 

 respect the specimens figured by Terquem under the name S. angulosa d'Orbigny. 

 Terquem's specimens represent a typical S. excavata, and, according to Fornasini, 

 with whom we agree (F. 1904, SOF. p. 5, pi. i. fig. 8), difi'er considerably from 

 the " Planche inedite " of d'Orbigny's S. angulosa. This round-edged variety occurs 

 at many Stns. At Stn. 7 specimens intermediate between S. excavata and S. Umhata 

 d'Orbigny occur. At Stn. 11 a specimen was found with a sub-arenaceous investment. 

 Feebly costate individuals occur at many Stns., notably at Stn. 3, and at Stns. IX and 

 13, where the peripheral edges were marked by many secondary keels ; such specimens 

 may be compared with the S. hicarinata and tricarinata of the " Planches inedites " 

 (F. 1904, SOF. p. 4, pi. i. figs. 4, 5) and the 8. ornata of Cuba (d'Orbigny, 1839, FC. 

 p. 167, pi. xii. figs. 7, la). At Stn. 11 a typically square-edged specimen with strongly 

 reticulate or foveolate markings was found. 



18. Spiroloculilia impressa Terquem. 



Spiroloculina impressa Terquem, 1878, FIR. p. 52, pi. v. (x.) fig. 8. 

 Brady, 1884, FC. p. 151, pi. x. figs. 3, 4. 

 Millett, 1898, etc., FM. 1898, p. 264. 



5 Stations. 



Very poorly represented, and none of the specimens very typical except at Stn. 1. 

 Terquem's species may be described as an elongate type of S. excavata with rounded 

 periphery and limbate sutural lines, 



19. Spiroloculina dorsata Reuss. 



Spiroloculina limbata Bornemann, 1855, FSH. p. 348, pi. xix. fig. 1. 



„ depressa Williamson, 1858, RFGB. p. 82, pi. vii. fig. 177; var. rotundala, ibid, 



fig. 178 ; and var. cymbium, ibid. fig. 179. 

 Miliola (Spirolocidina) limbata Parker & Jones, 1865, NAAF. p. 409, pi. xvii. fig. 83. 



