398 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



Tiiese seven stations ranged in depth from 20 to 106 fathoms 

 (37 to 194 meters), the average 64 fathoms (117 metei-s). The 

 bottom temperature is given for only two of the stations, averaging 

 nearly 70° F. (21.1° C). 



Spiroloculina gratdoupl, var. indsa — Material examined. 



SPIROLOCULINA ACUTIMARGO H. B. Brady. 



Spiroloculina acuiimargo H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 154, pi. 10, figs. 12-15.— Egger, Abh. kon. bay. Akad. Wise. Mun- 

 chen, CI II, vol. 18, 1893, p. 222, pi. 1, figs. 26-28.— Millett, Journ. Roy. Micr. 

 Soc, 1898, p. 264.— Bagg, Proc. U. S. Nat. Mus., vol. 34, 1908, p. 119.— Heeon- 

 Allen and Earland, Trans. Zool. Soc. London, vol. 20, 1915, p. 557. — Side- 

 bottom, Journ. Roy. Micr. Soc, 1918, p. 5 (?). 



A reference to the original figures of this species given by Brady in 

 the Challenger Report shows that evidentl}^ more than one species is 

 included. Figure 12 strongly suggests the species described by 

 Schlumberger as S. inaequilateralis, but no end view is given on 

 Brady's plate. Figure 14 seems to belong to Massilina. Of the 

 other figures 13 and 15 may be taken to represent the species S. acu- 

 timargo. 



Brady's localities also show different f aunal areas. These, as given 

 in the Challenger Report, are "off Bermuda, at a depth of 435 fathoms 

 (796 meters); at fom- stations in the South Atlantic, 350 to 1,425 

 fathoms (640 to 777 meters); at three localities in the South Pacific, 

 15 to 255 fathoms (27 to 466 meters); it has also been found in shore 

 sands collected on the east coast of Madagascar." 



The South Pacific 15 to 255 fathoms (27 to 466 meters) and shore 

 sands of Madagascar evidently represent a faunal area, and with no 

 fm'ther data it would be a guess that the large specimen (fig. 15) of the 

 Challenger Report came from some of these localities. This is 

 strengthened by Heron- Allen and Earland, who remark on their speci- 

 men from the Kcrimba Archipelago (p. 557): 



A very finely developed specimen at station 11, exhibiting the characteristic 

 lacunae at the extremities of the chambers. 



Egger's figures are not clear; his records are oft" Kerguelen, New Am- 

 sterdam; West Australia; and the Fiji Islands. Chapman records it 



