ROTALIIDAE — ANOMALINA; PULVINULINA. 51 



This is a rare species in the collection. It is perhaps closer to 



the figure given by d'Orbigny in the Cuban monograph as Rotalina 



cuUrata than the broader form of the species so abundant in 



globigerina-ooze. 



Pulvinulina incerata, new species. 



(Plate 9, Figures 1 to 3.) 



Test unequally biconvex, dorsal side somewhat more convex than the 

 ventral, periphery subacute; chambers numerous, 7 or 8 in the last-formed 

 coil; sutures oblique, rather indistinct and very slightly, if at all, depressed 

 on the dorsal side, nearly radiate and somewhat depressed on the ventral 

 side; wall fairly thick, finely punctate, otherwise smooth, ventrally somewhat 

 umbiUcate, the apertural face of the last-formed chamber obhquely angled; 

 aperture elongate, at the base of the last-formed chamber; color white. 



Diameter up to 1 mm. 



At the single deep-water station outside the reef this species was 

 fairly common, but elsewhere only a few specimens occur. ^ It is 

 rather closely related to certain of the species found fossil in the 

 Tertiary of the Coastal Plain region. 



Pulvinulina repanda (Fichtel and Moll). 

 (Plate 8, Figures 10 to 12.) 



Nautilus repandus Fichtel and Moll, Test. Micr., 1798, p. 35, pi. 3, figB. o to d. 



Rotalia repanda Parker and Jones, Ann. Mag. Nat. Hist., ser. 3, vol. 5, 1860, p. 175, No. 25. 



Pulvinulina repanda Parker and Jones, in Carpenter, Parker, and Jones, Introd. Foram., 

 1862, p. 311.— Goes, Kongl. Svensk. Vet. Akad. Handl., vol. 19, pt. 4. 1882, p. 110. 

 pi. 8. figs. 276 to 282.— H. B. Brady. Rep. Voy. Challenger, Zoology, vol. 9. 1884, 

 p. 684, pi. 104, figa. 18 a to c. — Goes, Kongl. Svensk. Vet. Akad. Handl., vol. 25, 

 No. 9, 1894, p. 95, pi. 16, fig. 801.— Flint, Rep. U. S. Nat. Mas., 1897 (1899). 

 p. 328, pi. 72, fig. 8.— Cushman, Bull. 71, U. S. Nat. Mus., pt. 5, 1915. p. 50, 

 pi. 24. fig. 3. 



Test almost equally biconvex; peripheral margin acute, sUghtly lobulated, 

 carinate; chambers 7 or 8 in the last-formed whorl; sutures somewhat curved 

 above, nearly radial below, Umbate on both surfaces, on the ventral side 

 running into one another and merging at the umbihcal area; wall smooth, 

 finely punctate; aperture a shghtly arched opening haKway between the 

 umbiHcus and the peripheral margin. 



Diameter of the Tortugas specimens up to 1.25 mm. 



This is a species which seems to be most at home in warm, shallow 

 waters, such as are found in the Tortugas. Therefore it is not 

 surprising to find that this is the most common species of the genus 

 in the collection. Specimens were large and well developed, and in 

 the last-formed chamber in the larger specimens there is a tendency 

 somewhat to flatten out and to develop large apertures on the 

 ventral face. The wall is thick and heavy and the sutures limbate. 

 Pulvinulina semipunctata, new species. 

 (Plate 8, Figures 5, 6.) 



Pulvinulina oblonga H. B. Brady. Parker, and Jones, Trans. Zool. Soc. London, vol. 12, 

 1888, p. 229, pi. 46, figs. 5 o to c. 



Test unequally biconvex, dorsal side more flattened than the ventral; 

 chambers comparatively few, 7 to 10, rapidly increasing in size in the last- 



