268 HENRY B. BRADY. 



Hauerina inconstans, n. sp. 



Characters. — Test free, thin, commencing growth as a 

 planospiral, non-septate tube, after a time becoming spiro- 

 loculine in arrangement, and eventually forming convolu- 

 tions, each consisting of several (two, three, or four) 

 irregularly arcuate or sigmoid segments. Periphery bordered 

 by a broad thin wing, seldom found entire. Diameter of 

 large specimens, -^ inch (1*6 millim.). 



Hauerina inconstans is widely distributed, geographically 

 speaking, but the total number of specimens found is very 

 small. In the " Challenger" dredgings it occurs at depths 

 varying from 210 to 2300 fathoms. 



MiLIOLINA TRIQUETRA, 71. Sp. 



Characters. — Test free, compressed, subtriangular ; com- 

 posed of few segments, of which three, arranged on one 

 plan, usually go to form each of the later convolutions. 

 Aperture simple, situate on the produced neck-like extension 

 of the terminal segment. Texture roughly arenaceous 

 externally. Diameter Vt inch (T millim.) 



A rare species, the best specimens of which are from 

 anchor-mud in Humboldt Bay, Papua, 37 fathoms. 



MiLIOLINA ALVEOLINIFORMIS, n. Sp. 



Characters. — Test free, elongate, fusiform; composed of 

 narrow chambers arranged more or less spirally around the 

 long axis. Segments numerous, sometimes seven or eight 

 visible on the exterior ; ventricose or subcylindrical, arcuate. 

 Aperture porous or radiate, obscure, terminal. Texture 

 thin, porcellanous and nearly smooth in very young shells ; 

 finely arenaceous in adult specimens. Length -'o- inch (2'5 

 millim.) or more. 



Not unfrequently met with in the shallow waters and 

 shore-sands of tropical latitudes. 



Hyaline or Vitreous Types. 



Of the three families which constitute the Suborder 

 Perforata of Carpenter, Parker, and .Jones, namely, 

 Lagenida, Globigerinida, and Nummnlinida, the last named 

 may be dismissed in a word, The "■ Challenger" spoils 



