176 F0RAM1NIFERA OF THE CRAG. 



Amygdalites, Costa. 



After Oolina add Ehrenberg, Diesing, Czjzek, Karrer, Kubler and Zwingli. 



Ovolina, Terquem. 



After Ovtjlina add Schafhautl. 



Oyulida ? Folin. 



After Lagena add Harvey and Bailey, Gilmbel, Stache, Karrer, Czjzek, Schwager, 

 von Hantken, F. W. O. B. Jones, Kubler and Zwingli, Terquem and Berthelin, 

 Fornasini, Butschli, Fischer, Alcock, Sherborn and Chapman, Haeusler, Mariani, 

 Balkwill and Millett, Wright, Deecke, Mackie, Seguenza, Vine, A. Agassiz, 

 Gruber, Dunikoivski, Tate and Blake, Brown, von Schlicht, Terrigi, Toutkowsky, 

 Fric, Green, Prestivich, Morris, Malagoli, Kaufmann, Marsson, Schlumberger, 

 Quenstedt, Steinmann, Gosse, JTartwig, Greene, Mobius, Rzehak, Dawson, 

 Nicliolson, Toll, Stache, Siddall, Cooke, Andreae, Wallich, Wood, Chimmo, 

 Folin, Neumayr, Egger, Goes, Guppy, Millett, and others. 



After Lagenula add Zborzewski. 



Lagenulina, Terquem. 



After Entosolenia add Mobius, Reuss, Dawson, Cooke, Chimmo, Schulze, Gosse, 

 Barker and Jones, Schlumberger, Alcock. 



After FissUEiNA add Pictet, Franzenau, Terquem, Karrer, Schwayer, Bomemann, 

 von Schlicht. 



Cenchridium, Ehrenberg, Zwingli and Kiibler. 



Capitellina, Marsson. 



General Characters. — Test consisting of a single chamber, globose, variously 

 compressed, or tubular, with one termiual aperture (rarely two) ; aperture round 

 or slit-like, trifid or stellate; level with the surface, or produced (ectosolenian), or 

 continued inwards (entosolenian). See Report, ' Challenger,' p. 441, figs. 11 a — m. 

 Surface smooth or ornamented. 



The species and sub-species of Lagena will be here described according to the 

 systematic order adopted in the Report of the ' Challenger,' &c, pp. 440 et seq. 



Although all the known forms of Lagena may be biologically referred to one 

 species (so numerous and perfect are the gradations from one variety to another), 

 yet they may be divided, as a " generic series, into sections grouped round a few 

 subtypical forms," most of which have their many varieties and sub-varieties. 

 These are set out in a large scheme or classified list in the Report ' Challenger,' 

 &c, pp. 444 — 449, and the following Table gives the result in a condensed 

 form. 



