414 CRETACEOUS PELECYPODA 



the successive formations, but they are always rare. One recent rcpresentant, 

 L. Sarssii, Loven, has been found in the Norwegian Sea. Fossil species occur 

 through all the mcsozoic and tertiary deposits from the Trias, but are always 

 scarce. 



List of cretaceous species ov RaduliduE. 



Radula and its sub-genera. 



For reference of the first 159 species quoted, see " Cat. dcs Lima cretacees connues," Pictet 

 and Campiche, (Paleont. Suisse, vme ser., 4""' partie, p. 161, ct seq.). lu the present list I shall 

 add the sub-generic names in parentheses. 



a. From the Neocomien (incl. Urgonien et Valangien) of Europe. 



1-10. — Radula Carleroniana, d'Orb., R. [Acesta] Dubisiensis, P. and C, R. [Acesla] Or- 

 bignijana, Math., R. Fillersensis, P. and C, R. longa et plana, Rcem., R. \_Plaijiostoma'] neocomi- 

 ensis, (ii' Orh., R. \_Plagiostoma'] eapillaris, P. and C, R. \_Acesta'] undata, Desh., R. [Acesia'] 

 Lorioli, P. and C. 



11.20. — R. suirigida, Rccm., R. strlcia, Rcem., R. GilUeroni, Lor., R. \_Plagiostoma'] Berrias- 

 easis, Pict., R. [Placjiostomd] Bumasi, Pict., R. \Placjiostoma'\ Bolina, d'Orb., R. [i' Acesia] 

 Varapensis, Loriol, R. \_? Ctemides] Essertensis, Loriol, -K. \_!' Acesia'] Sancta-crucisyV. and C, 

 R. Arzierensis, Lor. 



21.30. — R. \_i' Plagiosioma] Robiiialdina, d'Orh., R. [Plagiostoma] Aubersonensis , P. and C, 

 R. {Plagiostoma] Figneulensis, P. and C, R. [Ctenosireoii] ^jseudo-proboscidea, Lor., R. Etalloni, 

 P. and C, R. Royeriana, d'Orb., R. Gennani, P. and C, R. gemmata, P. and C, R. sculpta, 

 P. and C, R. Nicoleti, P. and C. 



31.38. — R, Moreana, d'Orb., R. exquisHa, Lor., R. Rusillensis, P. and C, R. Galloprocincialis 

 and MassiUensis, Math., R. [Zimaiula] Tombechiana, and R. \Limaiula] Bupinianu, d'Orb., 

 R. SJjimaUdd] semicostata, Rcem. 



b. From the etage Aptien and Gault of Europe. 



39-40. — R. Cottaldina, d'Orb., R. expansa, Forb. 



41-50. — R. lingua, Forb., R. [Lirnaiula] semisulcata, Sow.,* 7^. {Plagiostoma] hispanica, 

 Coq., R. {^Acesia] Encharis, Coq., R. \_Acesia] Rauliniana, d'Orb., R. [Acesta] Vraconensis, 

 P. and C, R. Itieriana, P. and Roux, R. depressicostata, P. and C, R. Ricordeana, Cott., R. al- 

 jiiua, P. and Roux. 



51-55. — R. Sabaiidiana, P. anl R., R. Sax'oneti, P. and R., R. {Plagiostoma] albensis, d'Orb., 

 R. [Plagiostoma] montana, P. and R., R. [? Plagiostoma] Rliodaniana ,-\ d'Orb. 



c. From middle and upper cretaceous beds of Europe. 



56.60. — R. [? Ctenoid es] sjiiovalis, Sow. (Trans. Geol. Soc., Lond., 2ud ser., iv, pi. 17, 

 fig. 21), R. [Acesta] clijpeiformis, d'Orb., R. [Plagiostoma] simpler, d'Orb., R. [Ctemides] rapa, 

 d'Orb., R [Ctenoides] ? frondosa, Duj., (tecta, d'Orb.). 



61-70. — R. ReichenbacJiii, Gein., R. GalUennei, d'Orb., R. Astieriana, d'Orb., R. elongata, 

 Sow., R. Farrigdonensis, Sharpe, R. intermedia, d'Orb., R. Cenomanensis, d'Orl)., 7?. [Acesta] 

 oniaia, d'Orh., R. [Plagiostoma] semi-ornata, i'Orh., R. [Acesta] sub-consobrina, d'Ovh. 



* Nilsson's and Sowcrby's figures under the samo name do not represent the same species, 

 t This may prove to be a Limea. 



