268 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



Polymorphina elegantissima — Material examined. 



POLYMORPHINA OBLONGA d'Orbigny. 



Plate 52, fig. 3. 



Polymorphina oblonga d'Orbigny, Foram. Foss. Vienne, 1846, p. 232, pi. 12, figs. 

 29-31.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 569, pi. 

 73, figs. 2-4.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 319, pi. 67, fig. 5.— 

 CusHMAN, Bull. 71, U. S. Nat. Miis., pt. 3, 1913, p. 88, pi. 37, fig. 6. 



Next to Polymorphina elegantissima this species has occurred at 

 more stations than any other species of the genus. With the ex- 

 ception of a single station, D5151, Sulu Archipelago, Tawi Tawi 

 group, 24 fathoms (44 meters), the stations are all in depths from 

 148 to 500 fathoms (271 to 914 meters), the average depth 306 

 fathoms (560 meters). The bottom temperatures were given range 

 from 41.1° to 54.4° F. (5° to 12.4° C), average 47.9° F. (8.8° C). 

 Specimens at most of the stations were rare. 



Polymorphina oblonga — Material examined. 



