576 MESSES. E. HERON-ALLEN AXD A. EAELAND ON THE 



be compared with d'Oi'bigny's Q. enoijlostoma (d'O. 1839, FC. p. 196, pi. xii. figs. 14- 

 ]7), but in tha.t species one of the earlier chambers is displayed as a ridge running 

 down the concave side of the shell. Adelosine specimens showing typical agglutination 

 of sand-srains upon the primordial chamber were observed at several Stns. (these are 

 figured in H.-A. 1915, EPF. p. 241, pi. xv. fig. 22). 



69. Milioliim fusca Brady. 



Quinqueloculma fusca Brady, 1870, FTR. p. 2S6, pi. xi. fig. 2. 

 Mitiolina fusca Brady, 1887, SERF. p. 883. 



Quinquelociilina fusca Schulze, 1874, etc., R. 1875, p. 13-1., pi. vi. figs. 19, 20. 

 Miliolina Offyludnans Goes, 189-1, ASF, p. 110, pi. xix. fig. 848 A. 

 „ fusca Earlaud, 1905, FBS. p. 197. 



„ Heroii-Alleu& Earlaud, 1908, etc., SB. 1909, p. 316. 



5 Stations. 



Very sparingly distributed, the best being at Stn. 13, where the individuals had the 

 typical M. fusca tint. At the remaining Stns. the tests, though otherwise character- 

 istic, were composed of very fine white sand-grains without any coloured cement, vvhich, 

 as we have elsewhere observed, may represent an intermediate stage linking the species 

 with 31. contorta (H.-A. and E. 1913, CI. p. 31). 



70. Miliolina contorta (d'Orbigny). 



Quinqueloculma contorta d'Orbigny, 1846, PFV. p. 298, pi. xs. figs. 4-6. 

 Miliolina contorta Brady, 1887, SBRF. p. 881. 



„ Halkyard, 1889, RFJ. p. 60, pi. i. fig. 4. 

 „ „ Sidebottom, 1904, etc., KFD. 1904, p. 13, pi. iv. figs. 7-9. 



„ „ Earland, 1905, FBS. p. 195. 



„ Heron-Allen & Earland, 1913, CI. p. 30. 



16 Stations. 



Almost universally distributed, abundant and attaining very fine proportions at some 

 Stns., especially at Stns. 9, 12, and I X. There is, as usual, a considerable number of 

 specimens passing into M. sclerotica, the essential difference between these two species 

 being the nature of the superficial test. At Stn. 1 the individuals all closely resemble 

 the figure of Qmnquelocidina rugosa given by Fornasini from the " Planches inedites " 

 (F. 1905, SOM. pi. iii. fig. 13), but they have a porcellanous texture, although like all 

 other specimens of M. contorta the surface is matt. The nature of the shell of 

 Q. rugosa must remain purely speculative, the species having its origin in a nomen 

 nudum, the " Planche inedite" giving practically no guide to the texture. Schlum- 

 berger has identified d'Orbigny's specific name rugosa \V\Va. specimens from Marseilles 

 (S. 1893, MGM. p. 68, pi. iv. (not ii.) figs. 91-93, text-figs. 18, 19) which differ con- 

 siderably from the " Planche inedite " in external characteristics, but which are 

 described as having a rough surface (" tet d'apparence rugose ") ; they appear therefore 

 to be a form of M. sclerotica. 



