324 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



in Palawan Passage — it was frequent, occurring at the other stations 

 as scattered or single specimens. 



Anomalina ammonoides — Material examined. 



ANOMALINA POLYMORPHA Costa. 



Plate 61, figa. 3a-c. 



Anomalina polymorpha Costa, Atti Accad. Pont., vol. 7, 1856, p. 252, pi. 21, 

 figs. 7, 9.— H. B. Brady, Rep. Voy. Challenger, Zoologj', vol. 9, 1884, p. 676, 

 pi. 97, figs. 3-7.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 336, pi. 79, fig. 3.— 

 Cushman, Bull. 71, U. S, Nat. Mus., pt. 5, 1915, p. 47, pi. 19, figs. 3, 4. 



This is the commonest species of the genus in the Philippine region, 

 occurring at nearly as many stations as A. grosserugosa, and at 

 certain stations being one of the most abundant species in point of 

 number of individuals. This is especially true of station D5236, in 

 494 fathoms (903 meters), bottom temperature 41.2° F. (5.1° C), off 

 the east coast of Mindanao, where it occurs very abundantly; and 

 again at station D5586, in 347 fathoms (635 meters), bottom temper- 

 ature 44.0° F, (6.6° C.) in Sibuko Bay, Borneo, where it was common. 

 At other stations it occurred as scattered individuals. The stations 

 range in depth from 49 to 730 fathoms (90 to 1,335 meters), the 

 average depth being 352 fathoms (644 meters). The bottom temper- 

 atures range from 40.1° to 73.8° F. (4.5° to 23.2° C), the average 

 being 48.2° F. (8.9° C). 



Anomalina polymorpha — Material examined. 



