FORAMINIFEKA OF THE PHILIPPINE AND ADJACENT SEAS. 365 



Genus SPORADOTREMA Hickson, 1911. 



The original description b}^ Hickson is as follows: 



The surface of the stem, and, in many cases, of the proximal parts of the branches 

 aa well, are not marked by areolae at all. The foramina are scattered irregularly on 

 the surface and are of relatively large size. There are no pillar pores. Below the 

 surface there may be seen a number of chambers communicating with one anothe 

 by large open passages and bounded by solid walls. There are no hollow pillars and 

 no foramina except those on the outer walls of the superficial chambers. 



SPORADOTREMA CYLINDRICUM (Carter). 



Polytrema cylindrica Carter, Ann. Mag. Nat. Hist., ser. 5, vol. 5, 1880, p. 441, 



pi. 18, figs. \a-g. 

 Sporadotrema cylindricum Hickson, Trans. Linn. Soc. London, Zoology, vol. 14, 



1911, p. 454, pi. 30, figs. 3, 4, 6, 7; pi. 31, figs. 10, 13-16; pi. 32, figs. 20, 21, 24, 



29, 32, 33. — Heron-Allen and Earland, Trans. Zool. Soc. London, vol. 20, 



1915, p. 729. 



The Philippine specimens of this species show the orange-yellow 

 color characteristic of this species, as described and figured by Hick- 

 son. As far as the records show the species is not common and a 

 few specimens have been found at the following stations: D5146, Sulu 

 Archipelago off Siasi, 24 fathoms (44 meters); D5179, off Romblon, 

 37 fathoms (68 meters) ; and D5357, north of Balabac Strait, 68 fath- 

 oms (125 meters). 



This genus can be easily distinguished through the generic descrip- 

 tion given b}^ Hickson preceding this. 



Sporadotrema cylindricwm — Material examined. 



Family NUMMULITIDAE. 



Genus NONIONINA d'Orbigny, 1826. 



NONIONINA UMBILICATULA (Montagu.) 



Plate 74, figs. 3a, b. 



Nautilus umbilicatulus Montagu, Test. Brit., 1803, p. 191. 



Nonionina umbilicatula Parker, Jones, and H. B. Brady, Ann. Mag. Nat. Hist., 

 ser. 4, voL 8, 1871, p. 242, pi. 12, fig. 157.— H. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 726, pi. 109, figs. 8, 9.— Cushman, Bull. 71, U. S. Nat. 

 Mus., pt. 4, 1914, p. 24, pi. 17, fig. 1. 



Rather typical specimens of this species occurred at 13 stations in 

 the region, ranging in depth from 105 to 500 fathoms (193 to 914 



