FOBAMINIFEEA OF NOETH PACIFIC OCEAN. 



81 



ASCHEMONELLA RAMULIFORMIS H. B. Brady. 



Aschemonclla ramidiformis H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 273, pi. 27, figs. 12-15. 



Description. — "Test free, elongate; forming an irregular, more or 

 less branched, sometimes segmented 

 tube, with numerous apertures, lateral 

 and terminal. Walls very thin, but hard 

 and firmly cemented; exterior only 

 slightly rugose, interior surface smooth. 

 Length, J inch (8 mm.)." 



Distribution. — Found at three Chal- 

 lenger stations in the North Pacific, 244, 

 24G, and 253, in 2,050-3,125 fathoms. 

 Most common at station 244 in 2,900 

 fathoms. 



ASCHEMONELLA CATENATA (Norman.) _. JL 



Astrorhiza catenata Norman, Proc. Roy. Soc. 



London, vol. 25, 1876, p. 213. 

 Aschcmonella catenata H. B. Brady, Quart. 



Journ. Micr. Sci., vol. 19, 1879, p. 42, 



pi. 4, figs. 12, 13; Rep. Voy. Challenger, 



Zoology, vol. 9, 1884, p. 271, pi. 27, figs. 



1-11; pi. 27 A, figs. 1-3. 

 Aschemonclla scabra H. B. Brady, Quart. 



Journ. Micr. Sci., vol. 19, 1879, p. 44, pi. 



3, figs. 6, 7. 

 Description. — "Test free, irregularly 

 branched; chambers numerous, inflated, 

 variable in size and contour, usually with 

 several tubulated orifices, each of which 

 may produce a fresh segment. Walls 

 thin, compactly built, exterior more or 

 less rough, often acerose with partially 

 embedded sponge-spicules ; interior 

 smooth. Complete specimens sometimes 

 Y^ inch (10.5 mm.) in length." 



Distribution. — This species is recorded fig. no.— aschemonella ramulifor- 

 at four Challenger stations in the North "* x 15 - (AFTER Brady) 



Pacific, 224, 237, 244, 246, in 1,850-2,900 fathoms. Brady speaks 

 of the specimens from station 244 as the finest obtained by the 

 Challenger. 



Subfamily 2. REOPHACIN^E. 



Test of agglutinated material, sand grains, sponge-spicules, etc., 

 with a varying amount of cement, chambers in a linear series, aperture 

 single at the end of the last formed chamber. 



16777— Bull. 71—10 6 



