348 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



abundant species. The ornamentation is beautifully , sculptured, 

 and varies considerably in strength but very little in its main char- 

 acters. The list of stations at which it occurs would be a recapitula- 

 tion of the main localities at Avhich dredging w^as done, from Formosa 

 on the north through the large part of the Archipelago. Besides this 

 general area it occurs at two stations to the south — D5580, in 162 

 fathoms (297 meters), Darvel Bay, Borneo, bottom temperature 

 55.8° F. (13.2° C); and D558o, in 476 fathoms (871 metei-s), Sibuko 

 Ba}^, Borneo, bottom temperature 41.1° F. (5° C). The general 

 distribution should be modified, however, to this extent, that the 

 species is characteristic of the protected waters among the islands of 

 the Archipelago and on the western border along the China Sea, but 

 is not represented at the stations on the eastern coast bordered by the 

 open Pacific. The range in depth is from 18 to 476 fathoms (33 to 

 871 meters), the average depth 118 fathoms (203 meters), the bottom 

 temperatures ranging from 41.1° F. to 55.8° F. (5° C. to 13.2° C), 

 average 51.2° F. (10.7° C). 



Rotalia papillosa — Material examined. 



ROTALIA PAPILLOSA H. B. Brady, var. COMPRE3SIUSCULA H. B. Brady. 



Plate 72, figs. 2a-c. 



Rotalia papillosa H. B. Brady, var. compressinscula H. B. Brady, Rep. Voy. 

 Challenger, Zoology, vol. 9, 1884, p. 708, pi. 107, figs, la-c; pi. 108, figs. la-c. — 

 CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 5, 1915, p. 70, pi. 30, fig. 1. 



The variety seems to be slightly more restricted in its range than 

 the typical form, not being recorded to the southward of the Archi- 

 pelago proper, although well distributed among the islands and in 

 the China Sea. The range of depth is from 16 to 560 fathoms (29 

 to 1,024 meters), the average depth being 179 fathoms (327 meters). 

 Bottom temperatures range from 50.5° F. to 63.1° F. (10.2° C. to 

 17.2° C), the average being 61.1° F. (16.1° C). 



At some of the stations specimens occurred in very considerable 

 numbers, at a few retilly abundant. Among the stations from 



