MILIOLIDAE — QUINQUELOCULINA. 65 



D'Orbigny's Q. lamarckiana can hardly be distinguished from Q. 

 auheriana, although the latter name has been more commonly used. 

 In the Tortugas material this species is often abundant, and con- 

 sists of two forms. In one of these the angle of the test is acute, the 

 surface smooth and very shiny. In the other the angle is blunt or 

 even sHghtly truncate, and the surface dull. It may be that these 

 represent two distinct species in the region. Brady evidently con- 

 fused this with Q, cuvieriana, which has supplementary carinse near 

 the peripheral angle of the test. This species, as figured in the 

 Challenger Report, lacks these. D'Orbigny described Q. lamarckiana 

 from Cuba and Jamaica, and his records for Q. auheriana are from 

 Cuba and Martinique. I have had the species from the north coast 

 of Jamaica, and it is apparently widespread in the West Indian 

 region, and perhaps in the Indo-Pacific. 



Quinqueloculina laevigata d'Orbigny. 



(Plate 13, Figure 2.) 



Quinqueloculina laevigata d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 301, No. 6; in Barker, 

 Webb, and Berthelot, Hist. Nat. Isles Canaries, 1839, vol. 2, pt. 2, "Foraminif^res," 

 p. 143, pi. 3, figs. 31 to 33. 



At a number of stations there are elongate, smooth specimens 

 with a shining surface which may be referred to Q. Icevigata d'Orbigny. 

 They are as a rule larger than Triloculina oblonga (Montagu), which 

 they somewhat resemble, but the chambers are more uniform in their 

 width and the specimens are Quinqueloculina. 



Quinqueloculina candeiana d'Orbigny. 



(Plate 13, Figure 1.) 



Quinqueloculina candeiana d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, 

 "Foraminiferes," p. 170, pi. 12, figs. 24 to 26. 



Test nearly twice as long as broad; chambers distinct from one another; 

 sutures sharply marked ; chambers triangular in transverse section, the periph- 

 ery sharply keeled; wall smooth, shiny; aperture comparatively small, with 

 a simple tooth, extending somewhat above the outline of the aperture. 



Average length of the Tortugas specimens 0.60 mm. 



These specimens seem to be identical with that described by d'Or- 

 bigny in the Cuban monograph. The angled periphery of the cham- 

 bers stands out sharply and, with its outline, distinguishes it from 

 any other species in the region. 



Quinqueloculina coUiunnosa, new species. 



(Plate 10, Figure 10.) 



Miliolina cuvieriana Heron- Allen and Earland (not d'Orbigny), Trans. Zool. Soc. London, 

 vol. 20, 1915, p. 571, pi. 4, figs. 33 to 36. 



Test slightly longer than broad; chambers somewhat indistinctly marked 

 from one another, the periphery angled and projecting, the last-formed 

 chamber extending out beyond the outline of the test at both ends; chambers 

 somewhat undulate; wall smooth, dull; apertural end much contracted, ex- 



