270 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



other stations vary in depth from 78 to 604 fathoms (143 to 1,105 

 meters), average about 275 fathoms (503 meters). The bottom 

 temperatures vary from 41.2° to 62.4° F. (5.1° to 16.8° C.) with the 

 average above 50° F. (10° C). 



Uvigerina tenuistriata — material examined. 



UVIGERINA SCHWAGERI H. B. Brady. 



Plate 55, figs. 3-5 a, b. 



Uvigerina schwageri H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 575, pi. 74, figa. 8-10.— Cushman, Bull. 71, U. S. Nat. Mus., pt. 3, 1913, 

 p. 97, pi. 37, figs. 3, 4. 



Brady described this species from the Philippines, and also recorded 

 it from the Fiji Islands and Torres Straits. In the wealth of material 

 examined from the Philippines and adjacent waters it has proved to 

 be by far the most common species in the region. With one exception 

 all these records are from the region of the Philippine Archipelago. 

 The other station is D5621, between Gillolo and Makj^an Islands, 

 298 fathoms (545 meters), where it was apparently rare. The other 

 stations range in depth from 61 to 742 fathoms (112 to 1,357 meters), 

 with the average depth 185 fathoms (338 meters). The bottom 

 temperatures range from 52.8° to 63.6° F. (11.5° to 17.5° C), with a 

 single station 43.7° F. (6.5° C). The average temperature, exclud- 

 ing the smgle station referred to, is 56.1° F. (13.4° C). Both the 

 average depth and average bottom temperature show perhaps some- 

 what of the reasons for the limited distribution of this species. 

 Apparently the region south of Japan, where so many species reach 

 their northern limits, is too cold for this species, for it was not noted 

 there. It is a very distinctive species, with its ivory-white, shining 

 test and peculiar shape. It was often found in large numbers, as 

 well as at a large number of stations. 



