DtJNDEY GASTEROPODA. 19 



This specimen is not labelled, so the locality is uncertain; 

 therefore, whether it is Inferior Oolite is not known with 

 certainty. 



MELAjSTIA UIS'DIJLATA, Deslongchamps. 



1843 M. undulata, Deslongchamps. Mem. Soc. Linn. 

 deNorm. YII., pi. 11, fig. 58—62 

 (non Chem. undulata, D'Orb., Pal. 

 fr. Terr. Jur. 2, pi. 237, figs. 16, 

 17. nee Stoliczka, Sitzungsb. Wien. 

 Ak. XLIII. tab. 1, fig. 1—1861.) 

 Syn. 1858 Cerithium muricatum, Quonstedt. Jura. tab. 57, 



fig. 17, (?Sow) 

 In the face of much division of opinion, I am uncertain as to the 

 name to be given to this shell. Our shell is very much like 

 C muricatum, Sow., but the mouth seems narrower; unfortunately 

 it is imperfect here ; the character of the mouth I take to be the 

 only distinction between Turritella muricata, Sow., and Melania 

 undulata, Desl. 



They have been united by Laube, but this is not approved by 

 Dr. Brauns. 



"We have a small block, with six specimens. 



Locality — Dundry. Lif. Ool. 



ALAEIA MYURTJS, Deslongchamps. 



1842 Rostellaria myurus, Desl. Mem. Soc. Linn, de 



Norm. VII. pi. 9, figs. 

 23—25, p. 176. 

 1850 Pterocera D'Orb. PaL fr. Terr. Jur. 



2, pi. 430, figs. 6—8. 



1 863 Alaria Lycett, Gt. Ool. Mol. Suppl. 



p. 122. 



1864 Piette. PaL fr. Terr. Jur. 



3, Gast. pL 2, figs. 8—11. 

 p. 30. 



