486 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



of less than 100 fathoms (183 meters); eight between 100 and 200 

 fathoms (183 and 366 meters); five between 200 and 300 fathoms 

 (366 and 549 meters) ; six between 300 and 400 fathoms (549 and 732 

 meters) ; five above 400 fathoms (732 meters ~i. At the deeper stations 

 the species was usually represented by few specimens. 



Numerous specimens formed of fused individuals were found, two 

 or more with the earlier annular chambei-s having fused into a com- 

 plete annular growth. 



OrbitoUtes duplex — Material examired. 



Cat. 

 No. 



15805 

 15806 

 15807 

 15808 

 15809 

 15810 

 15811 

 15812 

 15S13 



15814 

 15815 

 15816 

 15817 



15818 

 15819 



15820 



15821 

 15822 



Coll. of— 



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- 

 men.''. 



Station. 



D5106. 

 D5110. 

 D5148. 

 D5147. 

 D5149. 

 D5154. 

 D,'il59. 

 1)5160. 

 D5161. 

 D5201 . 

 D5206. 

 D5214. 

 D5217. 

 D521S. 

 ri.'J220. 

 D.5259. 

 D.5261 . 

 D52W. 

 D.5277. 

 1)5278. 

 D5.338. 

 D53a9. 

 D5.374. 

 D53S,1 . 

 D5388. 

 D5424. 

 D5426. 

 D543S. 

 D5459. 

 D.5445. 

 D5467. 

 D5469. 

 D5487. 

 D5567 . 

 D5570. 



D5579. 

 D5580. 

 D5589. 



D5590. 

 D5592. 



localitv. 



Depth 



fath- 

 oms. 



14 23 55 N.; 120 32 33 R. 

 13 59 20 N.; 120 75 45 E. 

 5 35 40 N.; 120 47 30 E. 



5 33 00 N. 

 5 14 50 N. 

 5 11 50 N. 

 5 12 40 N. 

 5 10 15 N. 



10 10 00 N. 



11 31 40 N. 



12 25 18 N. 



13 20 00 N. 

 13 11 15 N. 

 13 38 00 N. 



11 57 30 N. 



12 30 55 N.: 



13 49 15 N. 



13 56 55 N. 



14 00 10 N. 



11 33 45 N. 

 13 48 00 N. 

 13 46 45 N. 

 13 14 15 N. 



12 51 30 N. 

 9 37 05 N. 

 9 12 00 N. 



15 54 32 N. 



13 10 21 N. 



12 44 42 N. 



13 35 27 N. 

 13 36 4S N. 

 10 02 45 N. 



5 48 00 N. 

 5 52 15 N. 



120 42 10 E.. 

 119 58 45 E.. 

 119 54 00 E.. 

 119 55 10 E.. 



119 53 00 E.. 

 125 04 15 E.. 

 124 42 40 E.. 

 123 37 15 E.. 

 123 14 15 E.. 

 123 02 45 E.. 



121 58 00 E.. 

 121 42 15 B.. 

 121 34 24 E.. 



120 14 45 E.. 

 120 13 45 E.. 



120 17 15 E.. 

 119 24 45 E.. 



121 43 00 E.. 



121 35 08 E.. 



122 44 25 E.. 



123 26 15 E.. 

 121 12 37 E.. 



118 28 00 E.. 



119 44 42 E.. 



123 59 54 E.. 



124 59 50 E.. 

 123 37 ISE.. 

 123 38 24 E.. 



125 05 33 E.. 



120 33 45 E.. 

 120 12 57 E.. 



Binang Pool, Subin Bay. 

 Siasi Island 



4 54 15 N.; 119 09 52 E. 

 4 52 45 N.; 119 06 45 E. 

 4 12 10 N.; 118 38 08 E. 



4 10 50 N.; 118 39 35 E. 

 4 12 44 N.; 118 27 44 E. 



37 



135 



17 



10 



12 



10 



12 



16 



554 



32 



218 



105 



20 



50 



312 



145 



18 



80 



102 



43 



106 



190 



88 



228 



340 



27 



297 



201 



383 



480 



500 



732 



208 



330 



175 

 162 

 260 



310 

 305 



Bot- 

 tom 

 tem- 

 pera- 

 ture. 



° F. 

 '59.' 6 



52.8 

 '63.' i 



'•ig.'s 



58.6 

 59.6 



51.4 

 50.4 



44.3 



52.3 

 52.0 

 52.3 



Character of 

 bottom. 



gy-m 



dk. gy.m. 

 CO. s 



Co.,sh. 



CO. s 



CO. s 



fne. s 



gy.s.,m 



gn.m 



gn.m 



crs. gy.s 



crs. s 



sft. gn.m 



gy.m., glob . 



s.,m 



sh.,p.,s 



fne . s 



fne. s.,m.,sh, 



Co.,s.,m 



bk.s 



gym 



CO s 



sft. gn.m 



CO. s 



fne. gy.s 



ga.m 



Abimdancc. 



55.3 

 55.8 

 45.7 



44.3 

 43.3 



gn. m.,s 



gnm 



gn.m 



gn.m 



fne. s 



fne. s., glob. 



fne. s., Co. 

 fne. s., Co. 

 fne. gy. s. 



gy-m. 



gn. m.,s. .. 

 gn.m 



Few. 

 Few. 

 Few. 



Few. 



Few. 



Common. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Tommon. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



ToramoD. 



Few. 



Few. 

 Few. 



ORBITOLITES COMPLANATA Lamerck. 



OrbitoUtes complanata Lamarck, Syst. Anim. sans Vert., 1801, p. 376. — H. B. 

 Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 218, pi. 16, figs. 1-6; 

 pi. 17, fies. 1-6.— CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 6, 1916, p. 95, pi. 39, 

 fig. 2. 



Specimens of tliis species were abundant at many stations and at 

 some reaching a very considerable size. Specimens of the micro- 



