38 BULLETIN 161, UNITED STATES NATIONAL MUSEUM 



short neck. The single specimen we have is that figured from 

 Albatross Station H3993, Schischmarev Pass, Wotje, 3 miles N., in 

 1,187 fathoms. 



LAGENA sp.(?) 



Plate 6, Figures 12a, b 



The peculiar small form figured here seems worthy of being placed 

 on record, although no attempt has been made to refer this single 

 specimen to any described species. It is from Albatross Station 

 H3892, northeast pass, Makemo, 1 mile S., in 603 fathoms. 



Family POLYMORPHINIDAE 



Genus GUTTULINA d'Orbigny, 1826 



Guttulina d'Orbigny, Ann. Sci. Nat., vol. 7, p. 266, 1826 (not a subgenus of 



Polymorphina) . 

 Synonym: Polymorphina (part) of authors (not d'Orbigny), s. str. 



Genotype. — By designation, Polymorphina {Guttulina) communis 

 d'Orbigny. 



Test rounded, spherical to fusiform; chambers spheroidal to ellip- 

 soidal or clavate, not at all compressed, arranged more or less in an 

 elongate spiral series, so that they form generally a clockwise, close, 

 sigmoid series viewed from the base, successive chambers added in 

 planes less than 180°, three or four chambers in a cycle; sutures 

 distinct; aperture radiate. Jurassic to Recent. 



Guttulina is one of the most primitive genera of the family and is 

 developed directly from the spiral Eoguttulina of the Jurassic; it 

 appears first in the Upper Jurassic and is common in the Cretaceous 

 and later formations. The 5-chambered whorl at the base is generally 

 primitive and is found in the microspheric form of most of the other 

 genera of the family. Some authors have attempted to derive 

 Guttulina from Polymorphina, although the opposite is evident, both 

 from the development of the microspheric form of the two genera 

 and from the fact that true Polymorphinas do not appear until the 

 beginning of the Tertiary. Polymorphina represents a specialized 

 genus the biserial arrangement of which has been derived from the 

 more primitive quinqueloculine young. 



GUTTULINA sp.(?) 



Plate 9, Figures 10a, b 



The peculiar costate form figured here from Albatross Station 

 H3814, latitude 15° 14' 10" S., longitude 147° 51' 5" W., m 391 

 fathoms, seems worthy of record, although with the single specimen 

 there is not enough to warrant any specific description. 



