242 Messrs. Parker, Jones, and Brady on 



114. RobuUna calcaVy Linn^, sp. PI. X. fig. 96. 



"Nautilus joopiWosMs;" Soldani, Testae, vol. i. pt. 1. p. 65, pi. 59, figs, qq, 

 rr. D'Orb. op. cit. p. 289. no. 12. 



'•'• Hah. The Adriatic, near Eimini." (Fossil near Sienna, 

 Soldani^ 



This is a keeled but tuberculate variety *, and can scarcely 

 be accepted as the representative of the type. It resembles 

 more or less several of Fichtel and Moll's varieties, approaching 

 their var. e most nearly. Their Nautilus pajyillosus is granular 

 on the septa, and lacks the spinous armature of the keel, and 

 thus diff"ers from Soldani's figures under the same name. We 

 shall do best to accept the trivial name appended by Montfort 

 to his copy of Fichtel and Moll's drawing (pi. 12. figs, a-c), 

 Cristellaria rostrata^ Montf. sp. 



115. Rohulina acideata, D'Orb. PI. X. fig. 91. 



" Nautili carinati (Lenticnlf^) ;" Soldani, Testae, vol. i. pt. 1. p. 64, pi. 58. 

 figs, hh, mm. D'Orb. op. cit. p. 289. no. 14. 



" Hab. The Adriatic, near Rimini." (Fossil near Sienna, 



Soldani.) 



Two forms of the typical Cristellaria calcar. 



116. Rohulina Planciana, D'Orb. PL XII. fig. 157. 



"Lentieulffi;" Soldani, Testae, vol. ii. (not i. pt. 2) p. 110, pi. 26. fig. O. 

 D'Orb. op. cit. p. 290. no. 20. 



Hal. " Fossil in the neighbourhood of Sienna." (Clusen- 

 tini, Soldani.) 



This is a lenticular, umbilicate Nonionina, scarcely so thick 

 relatively as most specimens of N. umhilicatula, but hardly 

 worth separating from that species. 



117. Rohulina ruffosa, D'Orb. PL IX. fig. 31. 



"Lenticulsef Soldani, Testae, vol. ii. (not i. pt. 2) p. 110, pi. 26. fig. N. 

 D'Orb. op. cit. p. 290. no. 21. 



" Hab. Fossil in the neighbourhood of Sienna." 



A nautiloid Liticola, sublenticular, and depressed at the 

 umbilicus ; septation entirely obscured by the rough textm-e 

 of the exterior t- This may be accepted as a varietal form, 

 closely allied to L. canariensis, 



* Also Soldani, Sag. Oritt. p. 98, pi. 1. figs. 6, J. 

 t If the obsciu-ation of tbe sbell be due to rock-matrix, it may be 

 doubtfully referred to Cristellaria. 



