FOEAMINIFERA OF THE PHILIPPINE AND ADJACENT SEAS. 359 

 SideroUtes tetraedra — Material examined. 



Locality. 



Depth 



in ! 

 1 fath- ; 

 oms. 



6 06 10 N. 

 5 33 00 N. 

 5 14 50 N. 



12 38 15 N. 

 11 36 40 N. 



13 11 15 N. 



13 49 15 N. 



13 53 00 N. 

 10 ,56 55 N. 



5 30 45 N. 

 4 52 45 N. 



4 12 ION. 



6 04 20 N. 



6 04 30 N, 



5 41 40 N. 

 5 22 55 N. 

 fi 03 15 N. 



13 38 00 N. 



7 03 00 N, 

 13 52 45 N, 

 13 14 15 N, 



121 02 40 E. 

 120 42 10 E. 



119 58 45 E. 



122 12 30 E. 



123 26 35 E. 

 123 02 45 E. 



120 14 15 E. 

 120 26 45 E. 



119 17 24 E. 



120 07 .57 E. 



119 06 45 E. 

 118 38 08 E. 



120 59 20 E. 

 120 59 30 E. 

 120 47 10 E. 

 120 15 45 K. 



120 35 30 E. 



121 58 00 E. 

 125 39 00 E. 

 120 25 00 E. 



122 44 45 E. 



Bot- 

 tom 

 tem- 

 pera- 

 ture. 



F. 



21 

 10 

 12 

 37 

 26 

 20 



18 



248 



14-25 



340 



162 



260 



22 



23 



21 



34 



318 



50 



100 



201 



75.7 



47.4 



'52."3' 

 55.8 

 45.7 



50.4 



Character of 

 bottom. 



CO. s., sh. ... 



CO., sh 



CO. s 



hrd. s 



m., fne. s 



crs. s 



sh., p., s 



dk. gy. s 



gy.m 



s., sii 



br. s., Co... 

 fne. gy. s — 



s., sh 



CO. s., sh 



CO. s., sh. ... 



wh. s 



fne. s., sh 



sft. gn. m 



sft. m 



dk.gy.s 



CO. s 



Abundance. 



Few. 



Common. 



Common. 



Common. 



Common. 



Common. 



Common. 



Common. 



Common. 



Common. 



Rare. 



Rare. 



Rare. 



Rare. 



Rare. 



Rare. 



Common. 



Rare. 



Rare. 



Rare. 



Rare. 



Genus BACULOGYPSINA Sacco, 1893. 



Description. — Test in the very young, rotaliform, later irregular, 

 with numerous small finely punctate chamhers, with four to eight or 

 even more sharp tapering spines; supplementary skeleton greatly 

 developed, at the surface, when well preserved, with bosses of clear 

 shell material united with surrounding ones hy radial connecting 

 portions of the same sort of material, making a reticulate marking 

 standing out slightly above the sm-f ace. 



This genus represents the single living species which is found in 

 enormous numbers in the southern islands, especially off Australia, 

 but is rare in the Philippines. 



In its development Baculogy psina is more accelerated than Calcarina 

 and SideroUtes, and evidently represents a higher and later develop- 

 ment in the same series. 



BACULOGYPSINA SPHAERULATUS (Parker and Jones). 



Plate 75, fig. 6. 

 Baculogypsina sphaerulatus Cushman, Bull. 100, U. S. Nat. Mus., vol. 1, pt. 6, 

 1919, pi. 44, fig. 6. 



Description. — Test generally biconvex, the periphery somewhat 

 acute, with four to eight or more rather sharp short spines, surface 

 covered %vith a reticulated pattern of slightly projecting bosses, with 

 connecting lines of clear shell material; early development consisting 

 of one volution or slightly more of numerous chambers coiled as in 

 Galcarina, after which the supplementary chambers are filled in rapidly 

 on the surface, and the network of bosses and connecting rods built 

 up; the radial spines are always smooth except for the slight channel- 

 ing of the surface; color in fresh material often orange or yellow. 



