ART. 6 FORAMINIFERA: POLYMORPHINIDAE — CUSHMAN AND OZAWA 59 



Holotype, length 1.85 mm.; breadth 0.65 mm.; thickness 0.40 mm. 



Holoiype.— {Cat. No. 20952, U.S.N.M.) From Albatross D2160, 

 167 fathoms off Cuba. 



In its general appearance it closely resembles Pyrulina cylindroides, 

 but most of its sutures are almost vertical instead of oblique. It 

 has often one extra chamber added at the top of the main test. 

 In such a case, the suture of this extra chamber can not be distin- 

 guished from the others because of its similar appearance. 



Distribution. — In addition to the type locality, we have specimens 

 from Albatross D2756, 417 fathoms, coast of Brazil, and D2105, 

 1,395 fathoms, east coast of United States. There is a specimen also 

 from N^ero 613 in the Pacific that is close to the present species. 



PYRULINA RETICULOSA Cushman and Ozawa 



Plate 15, figures 4 a, b 



Pyrulina reticulosa Ctjshman and Ozawa, Jap. Journ. Geol. Geogr., vol. 6, 

 1929, p. 69, pi. 15, fig.l. 



Test elongate, elliptical, irregular in form, nearly circular in trans- 

 verse section; chambers few, apparently three in the type specimen; 

 sutures obscured by the ornamentation which consists of generally 

 longitudinal costae with transverse ones between, making an irregular 

 reticulation; aperture radiate. 



Length 0.70 mm.; breadth 0.33 mm. 



Holotype.— {Cat. No. 20312, U.S.N.M.) From Albatross D4882, 

 Blake Reef oft" Vagadosaki Lighthouse, 248 fathoms. 



This species is unique in its ornamentation. It may represent an 

 intermediate between Globulina and Pyrulina. 



PYRULINA VELASCOENSIS (Cushman) 



Plate 29, figures 1 a-c 



Polymorphina velascoensis Cushman, Bull. Amer. Assoc. Petr. Geol., vol. 10, 

 1926, p. 604, pi. 20, figs. 16 a, b. 



Test elongate, fusiform in front view, in side view with the sides 

 unequal, one side convex, the other concave, the concave side in 

 front view with a central depression; chambers not elongated, rather 

 compressed, arranged in a biserial series; sutures not at all depressed, 

 very indistinct; wall smooth; aperture radiate. 



Length 0.70 mm.; breadth 0.25 mm.; thickness 0.18 mm. 



This is a very peculiarly curved species having a longitudinal 

 central depression. 



Distribution. — This species is from the Velasco shale of the Tampico 

 iembayment, Mexico. 



