LAGENIDAE — POLYMORPHINA; UVIGERINA; SIPHOGENERINA. 35 



Genus SIPHOGENERINA Schlumberger, 1883. 

 Siphogenerina advena, new species. 

 (Plate 5, Figure 2.) 

 Test elongate, somewhat compressed, early portion either triserial or 

 biserial ; later portion, which makes up the larger portion of the test, uniserial ; 

 chambers numerous, distinct, inflated; sutures somewhat depressed, the 

 early portion and a part of the uniserial portion with fine, longitudinal costae, 

 more or less broken, followed by 2 or 3 chambers slightly spinose, after 

 which the remaining chambers are smooth and very finely punctate; aperture 

 eUiptical, each one connecting with the preceding by an internal funnel- 

 shaped tube. 



Length up to 0.65 mm. 



This is a very small, delicate species, but very characteristic and 

 constant in form and ornamentation. It is unlike any of the de- 

 scribed species and is probably characteristic of this general region, 

 as it was found at a considerable number of stations in the area. 



Siphogenerina raphanus (Parker and Jones). 

 (Plate 5, Figure 5.) 



Uvigerina {Sagrina) raphanus Parker and Jones, Philos. Trans., vol. 155, 1865, p. 364, pi, 



18, figs. 16, 17. 

 Sagrina raphanus H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 685, pi. 75, 



figs. 21 to 24. — Millett, Journ. Roy. Micr. Soc, 1903, p. 272. — Chapman, Journ. 



Linn. Soc. Zoology, vol. 30, 1910, p. 415. 

 Siphogenerina (Sagrina) raphanus Egger, Abh. kon. bay. Akad. Wiss. Miinchen, CI. II, 



vol. 18, 1893, p. 317, pi. 9, fig. 36. 

 Siphogenerina raphanus Cushman, Bull. 71, U. S. Nat. Mus., part 3, 1913, p. 108, pi. 46, 



figs. 1 to 5. 

 Siphogenerina cosiata Schlumberger, Feuille des Jeunes Naturalistes, ann. 13, 1883, p. 118, 



fig. 13. 



Test elongate, cyhndrical, or tapering, chambers of the uniserial portion 

 broader than long; surface marked by several rather widely separated, well- 

 developed costge, each extending nearly the length of the test and not affected 

 by the sutures; aperture typically with a short tubular neck and well-developed 

 flaring hp. 



Length of the longest Tortugas specimens 1 mm. 



A single fine, large, typical specimen occurred at station 14 in 12 

 fathoms, on the outside of the group off Loggerhead Key. There is 

 another small, poorly developed specimen from station 28, in Bird 

 Key Harbor, 4.75 fathoms. 



Family GLOBIGERINID^. 



Genus GLOBIGERINA d'Orbigny, 1826. 



Globigerina bulloides d'Orbigny. 



Globigerina bulloides d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 277, No. 1; Modules. 1826, 



Nos. 17, 76. 

 Globigerina siphonifera d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, " Forami- 



nifferes," p. 83, pi. 4, figs. 15 to 18. 



This very widely spread species has occurred at only two stations 

 in the bottom material of the Tortugas collection and was obtained 

 very rarely in the surface tows made off Loggerhead Key. It is not 

 nearly so common as the following species. 



