22 



BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



flattened and the outer end with numerous projecting points; wall 

 strongly reticulate, except in the final chamber, which is often much 

 smoother than the preceding ones; aperture large, on the ventral 

 side near the umbillicus, with numerous other secondary openings 

 about the inner border of the chamber. 



Diameter up to and sometimes exceeding 1 mm. 



Distribution. — This, seems to be a truly pelagic species and its 

 distribution therefore very dependent upon surface movements of 

 the ocean waters. Like certain of the other pelagic species, the best 

 development seems to be in the Caribbean. There in the bottom 

 samples there are very fine large specimens. 



The last-formed chamber is much modified in several ways. In 

 the adult or senescent specimen this last formed chamber becomes 

 very large, the periphery often with lobate projections which are 

 often of bizarre shapes. The chamber itself on account of the very 

 large aperture, often taking up most of the base, is somewhat loosely 

 attached. The surface of this chamber also, instead of being coarsely 

 reticulate as in the earlier chambers, is much more finely reticulate 

 or even almost smooth. 



This early stages of this species might be mistaken for G. buUoides, 

 but the accessory openings on the dorsal side are developed or at 

 least suggested at a very early age. 



Globigerina sacadifera — material examined. 



Cat. 

 No. 



19258 

 19259 

 192G0 

 19261 

 19262 

 19203 

 19264 

 192G5 

 19266 

 19207 

 19268 

 19209 

 19270 

 19271 

 19272 

 19273 

 19274 

 19275 

 19276 

 19277 

 19278 

 19279 

 192S0 

 19281 

 19282 

 19283 

 19284 

 19285 

 19286 

 19287 

 192S8 

 19289 



Coll. of- 



U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.n.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 



No. of 

 speci- 

 mens. 



1 

 1 

 1 



10+ 



3 



4 

 10+ 



4 



6 



1 

 10+ 



3 



5 



1 



10+ 

 10+ 



1 



9 

 10+ 



3 



10+ 

 10+ 

 10+ 

 10+ 



1 



2 



3 



1 



1 



7 



2 



1 



Station. 



Locality. 



1)2003. 

 D2034. 

 D2035. 

 D2039. 

 D2(H1. 

 D2042. 

 D2043. 

 D2050. 

 D2052. 

 D2096. 

 D2097. 

 D2099. 

 D2105. 

 D2106. 

 D2109. 

 D2in. 

 D2115. 

 D2110. 

 D2117. 

 D2138. 

 P2140. 

 D2144. 

 D2150. 

 D2160. 

 D2172. 

 D2173. 

 D2174. 

 D2189. 

 P219G. 

 D2202. 

 D2203. 

 D2204. 



37 16 30 N. 

 39 27 ION. 

 39 26 ION. 



38 19 26 N. 



39 22 50 N . 

 39 33 00 N. 

 39 49 00 N. 

 39 42 50 N . 

 39 40 05 N. 

 39 22 20 N. 

 37 56 20 N. 

 37 12 20 N. 

 37 50 00 N. 



37 41 20 N. 

 35 14 20 N. 

 35 09 SON. 

 35 49 30 N. 

 35 45 23N. 

 15 24 20 N. 

 17 44 05 N. 

 17 36 ION. 



9 49 00 N. 

 13 34 45 N. 

 23 10 31 N. 



38 01 15 N. 



37 57 00 N. 



38 15 00 N. 



39 49 30 N. 

 39 35 00 N. 

 39 38 00 N. 

 39 34 15 N. 

 39 30 .30 N. 



74 20 36 W. 



69 56 20 W. 



70 02 37 W. 

 68 20 20 W. 

 68 25 00 W. 

 68 26 45 W . 



68 28 30 W. 



69 21 20 W . 



69 21 25 W . 



70 52 50 W. 

 70 57 30 W. 



69 39 00 W. 

 73 03 50 W. 



73 03 iOW. 



74 59 low. 

 74 57 40 W. 

 74 34 45 W. 



74 31 25 W. 

 63 31 30 W. 



75 39 00 W. 



76 46 05 W . 

 79 31 30 W. 



81 21 low. 



82 20 37 W. 

 73 44 00 W. 

 72 34 00 W. 

 72 03 00 W. 



70 26 00 W. 

 69 44 00 W. 



71 39 45 W. 

 71 41 15 W. 

 71 44 30 W. 



Depth 



in 

 fath- 

 oms. 



641 



1,346 



1,362 



2,369 



1,608 



1,555 



1,467 



1,050 



1,098 



1,451 



1,917 



2,949 



1,395 



1.497 



142 



938 



843 



888 



683 



23 



966 



896 



382 



167 



568 



1,600 



1,594 



600 



1,230 



515 



705 



728 



Bot- 

 tom 

 tem- 

 pera- 

 ture. 



°F. 

 "38.6' 



38.0 

 38.5 

 38.5 

 44.5 

 45.0 

 37.5 



41.0 

 42.5 

 50.5 



39.0 

 39.0 

 39.8 



39.7 



45.8 



39.0 

 37.0 



"39.7' 

 38.0 

 .39.1 

 38.9 

 39.1 



Character of 

 bottom. 



glob, oz 



glob, oz 



glob, oz 



glob, oz 



glob, oz 



glob, oz 



glob, oz , 



glob, oz 



glob, oz 



glob, oz 



glob, oz 



glob, oz 



glob, oz 



bu. m 



gn.m 



m., fne. s — 

 bu. m., fne.s. 

 yl. m.. fne. s, 

 CO., brk. sh. 



gn.m 



wh. crs. s. 



gn.m... 

 glob. oz. 

 gy. m . . . 

 gn.ni.,s 

 gn.m... 

 gn.m... 

 en. m., s 

 br. m . . . 



Abundance. 



Rare. 



Rare. 



Rare. 



Abundant. 



Few. 



Few. 



Abundant. 



Few. 



Common. 



Rare. 



Abundant. 



Few. 



Few. 



Rare. 



Abundant. 



Abimdant. 



Rare. 



Common. 



Abundant. 



Few. 



Abundant. 



Abundant. 



Abundant. 



Abundant. 



Rare. 



Rare. 



Few. 



Rare. 



Rare. 



Common . 



Rare. 



Rare. 



