the Nonienclature of the Foraminifera. 167 



An elegant, narrow Planularian CristeUana (figs, cc and del 

 are subcostate) with attenuate, almost mucronate, extremities. 

 (D'Orbigny's reference is to pi. 68 — evidently an error.) 



Figs, cc & dd have elongate riblets on the lower (earlier) 

 part of the shell, better shown in pi. 59. fig. j)p^ "^ vol. i. 

 The series nnder notice, figs, aa-dd^ are dimorphous varieties, 

 showing the transition from relatively broad-chambered Pla- 

 nnlarice to those with extremely narrow, elongate, and sub- 

 parallel chambers, and having their original Cristellarian 

 growth more and more definitely succeeded by subsequent 

 chambers set on at a considerable angle, as on either side of a 

 FlabelUna. 



50. Bigenerina Icevigata, D'Orb. PI. XI. fig. 124. 



" Ortlioceratia Baculif Soldani, Testae, vol. i. pt. 2. p. 96, pi. 103. fig. D. 

 D'Orb. op. cit. p. 261. no. 3. 



''Hah. The Adi-iatic." 



This may be accepted as the Nodosarian form of Textxdaria 

 gihhosa ; that is to say, it is a short stout variety of Bigenerina 

 with somewhat irregular inflated chambers. 



51. Textularia ohtusa, D'Orb. PI. XI. fig. 115. 



" Polymorplia Pineiformia ;'" Soldaui, Testae, vol. i. pt. 2. p. 118, pi. 127, 

 fig. H. D'Orb. op. cit. p. 262. no. 1, 



" Hab. The Adriatic." (With a variety of other Foramini- 

 fera : a few from the Adriatic, many from the Mediterranean, 

 and some fossil from near Sienna, Soldani.) See note on 

 Textularia gibhosa^ no. 54. 



52. Textularia Icevigata, D'Orb. PI. XI. fig. 116. 



" Polymorpha Janiformia;" Soldani, Testae, vol. i. pt. 2. p. 119, pi. 132. 

 figs. X, M? D'Orb. op. cit. p. 262. no. 4. 



''Hab. The Adriatic." (Mediterranean [?], Soldani.) 



See note on Textularia gibbosa, No. 54. Fig. L has eight 

 chambers : fig. M is smaller and younger, with only four 

 chambers ; but it is apiculate, 



53. Textularia jy^i'^ctulata^ D'Orb. PI. XI. fig. 117. 



" Nautili ampborarii vel janiformes ;" Soldani, Testae, vol. ii. Appendix, 

 p. 141, pi. 7, figs. 46, e, E. D'Orb. op. cit. p. 262. no. 4. 



"Hab. The Adi-iatic." 



See note on Textularia gihbosa^ No. 54. D'Orbigny regards 

 this figm-e as " vue en devant ;" but it is really a minute and 

 young shell seen edgewise, and showing only the edge of the 

 first chamber and the aperture of the second. 



