INDEX. 



Acunfhometra, 21 



ACANTHOMETRINA, family, 21 



Acervulina (Sell.), 209 



Acervuline mode of growth, 55 



Aciciduria, geaus, 137-139 ; its history, 137; external 

 characters, 13"; internal structure, 138 ; affini- 

 ties, 138; geological distribution, 139 



Actinophys, genus, 15 ; its structure and actions, 

 18-20 ; reproduction, 34-30 



AcTixoPHRYXA, family, 18-21 ; reproduction of, 34-37 



Adelosina (D'Orb.), 75 



Agathistfegues (D'Orb.), 5, 75 



Alar prolongations of chambers, 58,59 ; inNummulina, 

 270, 271 



Alveolina, genus, 99-104; its history, 99; external 

 cliaracters, 99; internal structure, 100; simple 

 type, 100; complex type, 101; casts, 102; va- 

 rietal forms, 103; affinities, 104; geographical 

 and geological distribution, 104 



Alveolina Coscii, 103 



— elongata, 103 



— melo, 103 



— ovoidea, 103 



— Quoii, 99 



— rotella, 103 



^OTOsia, genus, 15; its structure and actions, 23-26; 



reproduction, 33 ; encysting process, 34 ; sexual 



generation, 35-30 

 Amoeba bilimbosa, 23, 24, 20 



— limax, 25 



— porrecta, 24 



— princeps, 24 



— quadrilineata, 25 



— radiosa, 24 



Amoeba verrucosa, 36, 39 



Amiebixa, family, 26-28 ; reproduction of, 35-30. 



AmpMstegina, genus, 241,247; its history, 241 ; ex- 

 ternal characters, 242, 243 ; internal structure, 

 243-245 ; casts, 245, 240 ; varietal forms, 246 ; 

 affinities, 246 ; geographical and geological distri- 

 bution, 247 



Amphistegina Cumingii (Carp.) 241, 275. 



Anomalina (D'Orb.), 200, 207, 208 



— coronata, 208 



— punctulata, 201 



Aperture, septal, relative dimensions of, 51, 52; value 



of as differential character, 55 

 Arcella, genus, 27 



Arenaceous shells of Foraminifera, 46, 47, 54, 140 

 Articulina (D'Orb.), 73, 75 

 Assiline forms of Nummulina, 204, 207, 270 

 Asterigerina (D'Orb.), 200, 213 

 • — • earinata, 213 



— lobata, 213 



— vulgaris, 213 

 Asterigerine flaps of Rotalines, 202, 204 

 Astral lobes of Amphistegina, 245 



B. 



Bigeuerina (D'Orb.), 190, 191 



Biloculina (D'Orb.), 75, 78 



Bolivina (D'Orb.), 194, 190 



Borelis (Moutf.), 99, 304 



Borelis constricta (Ehr.), 305 



BuHmina, genus, 194-197; its history, 194; external 

 characters and internal structure, 194-196 ; varietal 

 forms, 190 ; affinities, 196 ; geographical and geo- 

 logical distribution, 197 



40 



