142 PKOCEEDIJSTGS OF THE GEOLOGICAL SOCIETY. [Jan. 24, 



Pleurotomaria nucleus (Terq.), Pal. Hett. pi. 5. fig. 5. One shiowing 

 the small umbilicus. I. 4. 



Phasianella Morencycma (Piette), Terq. & Piette, Lias de I'Est de 

 France, pl. 4. figs. 9-11. ? = P. nana (Terq.). I. 2, 4. Common. 



Littorina (Tectaria) elegans (Gldf.), pl. 193. fig. 10. Common in 

 pit I. It is better described and figured by Rolle (Sitz. Ak. 

 Wiss. "Wien, Bd. xlii. No. 23) as Littorina Schimperi ; but a 

 little change in Goldfuss's description would make it include 

 both. He says, " it has four ribs, the upper one knobbed." 

 For this we must substitute four or more ribs, the second and 

 third from below being the strongest — and above these being 

 one or more small ribs, which are the most raised into knobs by 

 the cross ribs. ? = Amberleya alpina (Moore). 



Melania unidngulata (Terq.), I. c. pl. 3. fig. 10 (?). A worn speci- 

 men. I. 



Turritella Dunheri (Terq.), Z. c. pl. 3. fig. 5. I. 



Cerithium semele (D'Orb.), Martin, pl. 2. figs. 8-10. II. 8. 



Cerithium transversum (n. sp.). This differs from 0. etalense (Piette), 

 to which I at first referred it, only in having no longitudinal 

 strise, and having a minute umbilicus, by which two characters, 

 besides its fewer ribs, it is also distinguished from Chemnitzia 

 Berthavdi (Dum.). II. 



Cerithium, sp. A cast only. VI. 



Saxicava arenicola, (Terq.), pl. 7. fig. 7. I. 



Pleuromya galathea (Ag.), Mon. des Myes. pl. 28. figs. 1-3. I. 



Pleuromya striatula (Ag.), I.e. pl. 28. figs. 10-12. I.? Compressed 

 specimens. 



Arcomya elongata (Eom. sp.), Ool. pl. 8. fig. 1. I. A cast. 



Pholadomya glabra (Ag.), I. c. pl. 3. fig. 12. I. 



Pholadomya Fraasi (0pp.), Juraformation, p. 95 = P. prima (Qu.), 

 Jura, pl. 5. fig. 2. I. 



Myacites musculoides (Schl.), dwarfed form. See Phillips, Geol. of 

 Oxford, pl. 7. fig. 36. III. 30, and IV. 6. The characteristic 

 shell of the White Lias beds here. This appears to correspond 

 to the shell so named by the Geol. Survey ; but it seems to me 

 at least doubtful if all can be referred to Schlotheim's species. 

 There may possibly be two species here : the ribs on one (a) 

 are very regiilar, but become obsolete after a light ridge which 

 runs from the umbo ; the other (/3) is more irregular. 



Cardinia Listed (Sow.), M. C. pl. 164. figs. 1, 3, 4. I., II., III. 1. 



Cardinia ovalis (Stutchb.). An. IST. H. 1842, vol. viii.pl.lO.figs. 17-19. 

 I. Common. 



Cardinia crassiuscula (Sow.), M. C. pl. 185. 11. 



Cardinia unioides (Ag.), I. c. pl. 12". figs. 7-9. I., II. 



Cardinia lanceolata (Stutchb.), I. c. page 484. I. Eather a doubtful 

 determination, perhaps only an elongated variety of C. ovalis. 



Cardinia Desliayesi (Terq.), I. c. pl. 8. fig. 6. I. 4?. I have long 

 thought the specimen now referred to this distinct, and called it 

 C. injlata, it being more inflated and more angular pofteriorly. 



Cardinia Desoudini (Terq.), I. c. pl. 9, fig. 1. I. 



