408 INDEX TO THE GENERA AND 



SILICINA, Bornemann, 1874. Zeitsclir. deutsch. geol. Ges. xxvi, 1874, 731. 



[r= Involutina.~\ 

 limitata (Terq.). Bornemann, Zeitsclir. deutsch. geol. Ges. xxvi, 1874, 



733. \_Involutina, 1863.] 

 polymorpha (Terq.). Bornemann, Zeitsclir. deutsch. geol. Ges. xxvi, 



1874, 732. [Involutina, 1863.] 



Schwager, Boll. R. Com. geol. Ital. viii, 1877, 26, pL, 80. 



SIMPLORBITES, de Gregorio, 1882. Fossili dint. Pachino, 1882, 10. [" Parte- 



cipauo anche del gen. Orhitolites e Orbitoides, e piu aiicora del gen. 



Hpnenocyclus," . . .] 

 cupulimis, de Gregorio. Fossili dint. Pachino, 1882, 11, vi, 21a, b, 



22rt, b. 

 expansopsis, de Gregorio. Fossili dint. Pachino, 1882, 12, vi, 23 and 



24. 



nummulitinus, de Gregorio. Fossili dint. Pachino, 1882, 12, vi, 28a, b. 



pachinensis, de Gregorio. Fossili dint. Pachino, 1882, 12, vi, 27. 



perforatseformis, de Gregorio. Fossili dint. Pachino, 1882, 13, vi, 



25a, b. 



spongians, de Gregorio. Fossili dint. Pachino, 1882, 13, vi, 30a, b, c. 



tiniconicus, de Gregorio. Fossili dint. Pachino, 1882, 12, vi, 26a, b, c. 



SIPHOGENERINA, Schlumberger, 1883. Feuille Jeun. Nat., Aug. 1883, 117. 

 COStata, iSchlumb. Feuille Jeun. Nat., Aug. 1883, 118, fig. B. [Referred 



to Sagrina raphanus by Brady.] 

 glabra, Schlumb. Feuille jeun. Nat., Aug. 1883, 118, iii, 1 and la. 



[Referred to Sagrina columellaris by Brady.] 



ocracea, Schlumb. Feuille Jeun. Nat., Aug. 1883, 118, fig. C. 



SIPHONEMA, J. G. Bornemann, 1886. Nova Acta Acad. Leop. Carol. Li, pt. 1, 



1886, 17. [Referred to Girvanella by G. J. Hinde, Geol. Mag. dec. 3, 



IV, 1887, 227 ; described by Bornemann as an alga.] 

 ? arenaceum, Bornemann. Idem, 19, ii, 3. [Previously noticed in 



Zeitschr. deutsch. geol. Ges. XXXV, 1883, 274, as "rundlichen Korpern, 



welche undeutliche Stromatoporenstruktur zeigen." 



incrustans, Bornemann. Idem, 18, ii, 1 and 2. 



SIPHONINA, Reuss, 1849, Denkschr. k. Ak. Wiss. Wien, i, 1850, 372. 



flmbriata, Reuss. Denkschr. k. Ak. Wiss. Wien, i, 1850, 372, xlvii, 6. 



Terrigi, Atti Ace. Pont. Nuovi Lincei, xxxiii, 1880, 212, 



iv, 69. 



Terq., M^m. Soc. g^ol. France, [3], ii, 1882, 84, viii 



(xvi), 16a-c. 

 puteolana, Costa. Atti Accad. Pontaniana, vii, fas. 2, 1856, not descr., 



xxvii, 22. 

 reticulata (Czj.). Bronn, Lethaea Geognostica, ed. 3, in, 1853-56, 227, 



xxxv2, 23«, b, c. [Rotalina, 1848.] 



Schwager, Boll. R. Com. geol. Ital. Vlli, 1877, 26, pi., 59. 



reticulata, Reuss. Models, No. 48, 1865 (Catal., No. 86, 1861). [= 



Planorbulina.^ 

 Sitophoros. Mercatus, Metallotheca, 1719, 285, fig. ; and 286, fig. [== Nummu- 



Utes.'] 

 SOLDANIA, d'Orbigny, 1826. Ann. Sci. Nat. vii, 1826, 281. 



annulata, d'Orbigny. Ann. Sci. Nat. vii, 1826, 282, No. 6. 



=zr Cornuspira ? ; Spirillina f ; see Hammonia trivoluta. 



carinata, d'Orbigny. Ann. Sci. Nat. vii, 1826, 281, No. 1. 



Cristellaria ; see Nautili ; and Cristellaria. 



elegans, Ehr. Abhandl. k. Ak. Wiss. Berlin, 1838, 134. 



Ehr., Mikrogeologie, 1854, xxxvii, viii, 6. [A cast ; = 



CvtstdiCivtcitx 

 limia, d'Orbigny. Ann. Sci. Nat. vii, 1826, 281, No. 4. 



= Cornusp. foliacea (?) (Phil.) ; see Hammonice circulares, 



etc. ; and Frumentaria 4 speciei. 



