GASTEROPODA. 107 



(1863), pi. xlv, f. 19, 20, p. 102. Forest Marble; Laycock. 



Walton Collection. 

 Monodonta comma, J. Lycett, Supp. Mon. Moll. Gt. Ool. etc. 



(1863), pi. xlv, f. 24, 24 a, p. 101. Forest Marble; Farleigh. 



Walton Collection. 

 M. tegulata, J. Lycett, Supp. Mon. Moll. Gt. Ool. etc. (1863), 



pi. xlv, f. 17, 18, p. 102. Forest Marble; Laycock. Walton 



Collection. 

 M. waltoni, J. Lycett, Supp. Mon. Moll. Gt. Ool. etc. (1863), 



pi. xlv, f. 31, 31 a, b, p. 101. Forest Marble; Farleigh, Walton 



Collection. 

 Murchisonia angulata (? Phillips), J. Donald, Q. J. G. S. XLIII 



(1887), pi. xxiv, f. 2, p. 623. Carboniferous Limestone; Settle. 



Burrow Collection. 

 M. cancellatula, F. McCoy, A. M. N. H. ser. 2, x (1852), p. 191, 



and Contrib. Brit. Pal. (1854), p. 243, and Brit. Palaeoz. Foss. 



(1852), pi. i L, f. 20, 20 a, p. 292. May Hill Beds; Mullock 



Quarry, Dalquharran. 

 M. cyclonema, Salter, Cat. (1873), p. 155. Wenlock Limestone; 



Dudley. Fletcher Collection. 

 M. dispar, F. McCoy, A. M. N. H. ser. 2, xn (1853), p. 191, and 



Contrib. Brit. Pal. (1854), p. 259, and Brit. Palaeoz. Foss. (1855), 



pi. iii I, f. 37, 37 , p. 531. Carboniferous Limestone ; Lowick. 

 M. gyrogonia, F. McCoy, A. M. N. H. ser. 2, x (1852), p. 192, 



and Contrib. Brit. Pal. (1854), p. 243, and Brit. Palseoz. Foss. 



(1852), pi. i K, f. 43, 43 a, p. 293. Middle Bala ; W. of 



Llanfechan. In the explanation of plate i K, the figured 



specimen is said to be from Yspatty Evan. 

 M. kendalensis, McCoy, J. Donald, Q. J. G. S. XLIII (1887), 



pi. xxiv, f. 3, p. 624. M. verneuiliana, De Koninck, var. 



kendalensis, F. McCoy, Brit. Palaeoz. Foss. (1855), pi. iii H, 



f. 11, 12, p. 532. Carboniferous Limestone ; Kendal. 



M. pulchra, McCoy, var., F. McCoy, Brit. Palaeoz. Foss. (1852), 

 p. 294. Bala Beds; Allt-yr-Anker, Meifod, and north of 

 Tremadoc. Llandovery Beds; Mathrafal, and Mullock quarry. 



M. simplex, F. McCoy, A. M. N. H. ser. 2, x (1852), p. 192,. ^nd 

 Contrib. Brit. Pal. (1854), p. 244, and Brit. Pakeoz. Foss. (1852), 



