246 Messrs. Parker, Jones, and Brady on 



limbate septa, and strongly tuberculate flattisli centre, like 

 some varieties of C. cassis. The margin is bluntly dentated 

 by the projecting septal ribs j there is no carina. It will be 

 well to recognize this as a subordinate suborbicular form of 

 C. cassis. 



131. Cristellaria elegans^ D'Orb. PI. XI. fig. 103. 



" Zituus ekffans;" Soldani, Testae, vol. i. pt. 1. p. G4, pi. 5G. fig. Q. 

 D'Orb. op. cit. p. 293. no. 24. 



^^ Hob. Fossil at Coroncina." (Near Sienna, Soldani.) 



The specimen figured by Soldani is not a very good one ; 

 it apparently represents a shell with somewhat thinner edge 

 than the last named, and with the posterior angles of the 

 chambers exserted, but not otherwise differing materially 

 from it. The name G. tuberculata may well cover wider 

 distinctions than exist between these two forms. 



132. Cristellaria papulosa, D'Orb. PI. XI. fig. 98. 



''Nautilus papillosusf Soldani, Testae, vol. i. pt. 1. p. 66, pi. 59. fig. ss. 

 D'Orb. op. cit. p. 293. no. 25. 



^^ Hob. Fossil at Coroncina." (Near Sienna, /S^oZd'am.) 



A minute and probably a young shell. It belongs to the 

 spinous and tuberculate series, of which Cristellaria rostrata., 

 Montfort, sp., may be taken as the best developed type. 



133. Cristellaria {Saracenaria) Italicaj Defrance. 



PI. X. fig. 79. 



"Nautili {Seniinula) tiicostulati ;" Soldani, Testae, vol. i. pt. 1. p. 62, 

 pi. 53. figs. A, B. D'Orb. op. cit. p. 293. no. 26. 



" Hah. Living in the Adriatic, near Rimini ; fossil in the 

 neighbourhood of Sienna." (Mediterranean and fossil at San 

 Quirico and Sienna, Soldani.) 



See notes on D'Orbigny's Models nos. 19 and 85. (Fig. A 

 is copied.) 



134. Nonionina melo, D'Orb. PI. XII. fig. 158. 



« Nautilus Melo ;" Soldani, Testae, vol. ii. p. 33, pi, 8. figs, zz, A, B, C. 

 D'Orb. op. cit. p. 293. no. 4. 



" Hah. Fossil at Coroncina." (Near Sienna, Soldani.) 



This is Nonionina pompilioides^ F. & M. sp. (Fig. C is 

 copied.) 



135. Nonionina umbilicata, D'Orb. PI. XII. fig. 135. 



"NautiUtffi;" Soldani, Testae, vol. i. pt. 1. p. 66, pi. 60. fig. B. D'Orb. 

 op. cit. p. 293. no. 6, 



" Hah. Living in the Adriatic, near Rimini, and in the 



