FORAMINIFERA OF THE PHILIPPINE AND ADJACENT SEAS. 



93 



series of chambers progressively increasing in size; wall coarsely aren- 

 aceous, rough, fairly thick, aperture circular, in the middle of the 

 terminal face, often on a projecting, neck-like portion; color variable, 

 usually white or gray. 



Length up to 3.5 mm.; diameter 0.4 to 1 mm. 



This species has proved to be one of the most common in the region. 

 It is characteristic of the shallow water of the coral-reef region. It has 

 occured at a large number of stations ranging in depth from 14 to 318 

 fathoms (25 to 582 meters). Two stations at a greater depth were 

 258 and 318 fathoms (472 and 582 meters). In one case a single speci- 

 men occured and in the other few. The great majority of the stations 

 are in depths from 15 to 30 fathoms (27 to 55 meters). Bottom tem- 

 peratures are not usually given at these shallow water stations, but 

 where given they range from 75.7° to 76.3° F. (24.2° to 24.6° C). 



The early coiled portion separates the species from Reophax, but 

 the later portion alone would be described as belonging to that genus. 

 At first I took it to be the microspheric form of some species of ReopJiax 

 but it is very abundant, and when perfect seems always to have the 

 coiled early development. ReopJiax scorpiurus, which it in some ways 

 resembles, is a common species in the same locality, but in the mate- 

 rial examined was not seen to have a true close-coiled young in any 

 case, although the young portion is often curved. 



Ammobaculites reopMdformis — Material examined. 



No.ofl 



speci-l Station. 



mens.i 



4 

 10+ 

 1 

 1 

 9 

 1 



10+ 



5 

 2 

 4 



D5096. 

 D5097. 

 DolOO. 

 D5105. 

 D5106. 

 D5134. 

 D5136. 

 Dol53. 



P5156. 



D5161. 

 D5172. 

 D5178. 

 D5179. 

 D5181. 

 D5182. 

 D5191. 



Locality. 



Depth 



in 

 fath- 

 oms. 



14 20 23 N. 



14 19 15 N. 



14 17 15 N 



14 43 55 N. 



14 23 55 N. 

 6 44 45 N. 

 6 04 20 N 

 5 18 10 N. 



5 12 50 N. 



5 10 15 N. 



6 03 15 N. 

 12 43 00 N. 

 12 38 15 N. 

 11 36 40 N. 

 11 30 40 N. 

 10 29 45 N. 



D5192...i 11 09 15 N. 



D5206.. 

 D5210.. 

 D5217.. 

 D5220 . 

 D5256.. 

 D5276 . 

 D5338.. 

 D5342.. 

 D5426.. 

 D5478.. 

 D5580.. 



•D5642.. 



D5222.. 



11 31 40 N 

 11 49 55 N 

 13 20 00 N 

 13 38 00 N 



7 21 45 N 

 13 49 15 N 

 11 33 45 N 

 10 56 55 ISi , 



9 12 00 N. 

 10 46 24 N, 



4 52 45 N 



4 31 40 S 

 13 38 30 N 



120 34 15 E. 

 120 33 52 E. 

 120 32 40 E. 

 120 12 50 E. 



120 32 33 E. 



121 48 00 E. 

 120 59 20 E. 

 120 02 55 E. 



119 55 55 E. 



119 53 00 E. 



120 35 30 E. 



122 06 15 E. 



122 12 30 E. 



123 26 35 E. 

 123 23 20 E. 

 123 31 15 E. 



123 50 00 E. 



124 42 40 E. 

 124 28 05 E. 



123 14 15 E. 



121 58 00 E. 



124 07 15 E. 



120 14 45 E. 

 119 24 45 E. 

 119 17 24 E. 



118 28 00 E. 



125 16 30 E., 



119 06 45 E.. 



122 49 42 E.. 



121 42 45 E., 



Bot- 

 tom 

 tem- 

 pera- 

 ture. 



Character of 

 bottom. 



gy.m.,s.,sh, 

 gy.m.,s.,sh, 



gy-s 



Co 



fy-m 



ine. s 



s., sh 



CO. s., sh 



fue. s., sh . . . 



fue.s.jblk.sp 

 ine. s., sh.. 



fne. s 



hrd. s 



m., fne. s... 

 fne.,s. m... 

 gn. m 



gn. s 



gn. m 



fne. gy.s.. 

 crs. gy. s. . 

 sft. gn. m. 



m 



sb.,p., s... 

 CO. s., m. . 



gy.m 



fne. gy. s. . 



sh 



br. s.,Co... 



195 ; 52.8 j gn. m 



Abundance. 



Abundant. 



Abundant. 



Frequent. 



Common. 



Common. 



Abundant. 



Rare. 



Abundant. 



Rare. 



Few. 



Frequent. 



Few. 



Common. 



Rare. 



Rare. 



Frequent. 



Few. 



Frequent. 



Few. 



Several. 



Rare. 



Frequent. 



Few. 



Few. 



Several. 



Few. 



Rare. 



Few. 



Rare. 



