INDEX. 



319 



Spicular cord (of Carter), 25", 258 



SpirUVuia, genus, 68, 180, ISI; its history, ISO; 



external characters and internal structure, ISO ; 



affinities, 180, 181 ; geographical and geological 



distribution, 181 ; reproduction, 38 

 Spirillina arenacea (Will.), 1-11 



— foliaeea (Will.), (i8 

 Spiroliua (D'Orb.), 88, 8!) 



— agglutinans (IVOrb.), S!l, 144 

 Spiroline forms of Lituola, 89, 144 

 Spiroloculina, 75, 77 

 Sponges, related to Thalassicolina, 15, 22; to Carpen- 



teria, ISS, 189; parasitic on Polytrcma, 2;)G 

 SqvnmuUna, genus, G7 

 Stichost^gues, 5, IGO 

 Supplemental Skeleton of Foraminifera, 50,51 ; of Cal- 



carina, 220, 222; of Polystomella, 281-285 

 Surface-marking, value of in Foraminifera, 57-00 



Test of Rhizopods, 11 ; of Arcella, 27 ; of Diffliigia,27 ; 

 of Gromia, 04 



Textularia, genus, 189-192; its history, 189, 190; 

 external characters, 190-191 ; internal structure, 

 191; varieties, 191, 192; affinities, 192; geo- 

 graphical and geological distribution, 192 



TrxTDLARiNyE, sub-faniily, 173, 175 



Texture of the shell in Foraminifera, see Shell 



Tlialaraopora vesiculosa (Mich.); 189 



ThalassicoUa morum, 22 

 — uucleata, 23 

 • — punctata, 23 



Thalassicollina, family, 22 



Tilwporus, genus, 223, 229 ; its history, 223, 224 : — 

 T. vesicularis, external characters, 224, 225 ; 

 internal structure, 225, 226 : — T. haculatus, 

 external characters, 22 C ; internal structure, 227 ■ 

 varieties, 228 ; affinities, 228 ; geographical and 

 geological distribution, 229 



Trichodiscus, 20 



Triloculina, 75, 78 



Tiochamminu, genus, III, 142; its liisto;-y, 141; 

 external characters and interna) structure, 141, 

 142; affinities, 142; geographical and geological 

 distrilxilion, 142 



Trochamniina charoides, 141 



— incerta, 1 4 1 



— infiata, 141 



— irregularis, 142 



— squamata, 141 



Truncatulina (D'Orb.), 200, 207 ; reproduction of, 



37, 39 

 Truncatulina lobatula, 201 



— refulgens, 201, 207 



— variabilis, 207 

 Tubular structure of shell, 45, 46 



U. 



Unilocular Foraminifera, 41, 42, 49 



Uniloculina (D'Orb.), 75 



jr»/(/e)'ma, genus, 169, 170; its history, 1(!9 ; external 

 characters and internal structure, 109, 170; affini- 

 ties, 170 ; geographical and geological distribution, 

 170 



V. 



Vaginulina (D'Orb.), IGO 



Valve, of Jliliola, 70, 79; of Yalvulina, 14"; of Sphse- 

 ruidiua, 185 



ViihuUna, genus, 146-148; its history, 14G; external 

 characters and internal structure, 146 ; varietal 

 forms 147; affinities, 148; geographical .and geo- 

 logical distribution, 148 



Vermiculum (Mont.), 74 



Verneuilina (D'Orb.), 190, 192 



— arenacea, 192 



— pygmsea, 192 



Vertehriiliita, genus, 72-7-1 ; its history, 72 ; external 

 characters, 72,73 ; internal structure, 73 ; varieties 

 73, 74 ; affinities, 74 ; geographical and geological 

 distribution, 74 



Vcrtebralina cassis, 72 



— mucronata, 72 



— striata, 72 

 Virguhua (D'Orb.), 194, 196 



Vitreous texture of shell of Foraminifera, 45, 46 

 Vulvuhna (D'Orb.), 190, 192 



W. 



Webbina (D'Orb.), 69, 142. 



rniNTF.D BY 

 J. E. ADLAED, BARTnOLOMKW CLOSE. 



