32 SHALLOW-WATER FORAMINIFERA OF TORTUGAS REGION. 



This species, which was originally described by d'Orbigny in his 

 Cuban monograph and recorded by him from Cuba and Jamaica, 

 I found also at Montego Bay, Jamaica. 



In the Tortugas collection this is a very abundant species, and fits 

 remarkably well the figure and description given by d'Orbigny. 

 The triserial portion is limited to the very earliest development, and 

 except for the slight irregularity in the arrangement of the chambers, 

 the later portion might easily be taken for a Bolivina. It is probably 

 widely distributed in the Gulf of Mexico and the Caribbean regions 

 ifi similar habitats. In spite of the numerous specimens, it shows 

 remarkably little variation. 



Family LAGENID.®. 



Genus NODOSARIA Lamarck, 1812. 



Nodosaria (Glandulina) rotundata (Reuss). 



(Plate 4, Figure 1.) 



Glandulina rotundata Reuss, Denkschr. Akad. Wiss. Wien, vol. 1, 1849, p. 366, pi. 46, fig. 2. 



Nodosaria (Glandulina) rotundata H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 491. pi. 61, fig.s. 17 to 19.— Flint, Ann. Rep. U. S. Nat. Mus., 1897 (1899), p. 

 308, pi. 54, fig. 5. — Millett, Journ. Roy. Micr. Soc, 1902, p. 510. — Cushman, 

 BuU. 71, U. S. Nat. Mus., pt. 3, 1913, p. 47, pi. 28, fig. 6. 



Test oval or subovate, broadest in the middle, composed of few chambers, 

 apical end broadly rounded, without spines, apertural end more elongate, 

 aperture with radiate hnes about the margin; last-formed chamber occupying 

 one-half or more of the visible test. 



Length of the Tortugas specimens 0.8 mm. 



The species occurred at but one station and as a single specimen. 

 This is very typical, as shown (plate 4, fig. 1). 



Nodosaria sp.? 

 (Plate 4, Figure 2.) 



There is a single two-chambered specimen of a costate species, 

 which is evidently the young, possibly of Nodosaria vertebralis 

 (Batsch). A figure of this is given (plate 4, fig. 2). In its general 

 characters it may be compared to the two-chambered specimen 

 figured by d'Orbigny (in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 

 1839, "Foraminiferes," plate 1, figs. 8 to 10), which he named 

 Nodosaria catesbyi. There are no adult specimens, so it is impossible 

 to determine to what species this should belong. 



Genus CRISTELLARIA Lamarck, 1812. 



Cristellaria sp.? 



(Plate 4, Figure 3.) 



The specimen figured (pi. 4, fig. 3) is the only one of its genus found 

 in the collection from the Tortugas region. It is few-chambered 

 and small ; therefore may be a young, rather than an adult, specimen, 

 and as such I hesitate to place it definitely under any specific name. 



