246 PROCEEDINGS COTTESWOLD CLUB 1906 
One rather poor specimen in the Museum of the Geol. 
Survey, Jermyn Street, agrees closely with Geyer’s delinea- 
tions. It is from “Lower Lias [oxynotus zone], Robins 
Hood Bay [Yorkshire], Tate Colln.,” and is numbered 
14032. 
W EHNEROCERAS SP., Pl. X, f. 5, 6. 
1844, Ammonites acuticosta, Strickland, MS., J. Buck- 
man in Murchison, Geol. Chelt., Ed. ii, p. 103, 
pars. 
Description :—Somewhat stout, compressed whorls, 
inclusion about 34. Ribs subflexed, strong, numerous, 
umbilicus small, gradate ; inner margin marked. Periphery 
tabulate, crossed by strong ribs which hardly bend forward. 
Remarks :—One of the syntypes of Strickland’s species ; 
but very different from others. See Schlotheimia 1, 2, 4. 
Locality -—“ Lower Lias, Coltknap Hill, Evesham; 
Strickland Collection,” in Sedgwick Museum, Cambridge. 
Index and Synonymy. 
Below is an index to the species referred to in this paper, 
as a guide to the changes of nomenclature involved. 
Incorporated are also some notes of various changes of 
nomenclature, not necessarily referred to now, but impor- 
tant in any identification of these species. 
Synonyms are in zadzcs, new names in heavy type. 
Species not yet known as British are marked F. 
A comma between trivial name and author means that 
the author himself gave the name; a semicolon, that the 
author is using an already established name. 
Zgoceras angulatum ; Wright=S. angulata, S. colubrata. 
»  angulatum, var. exechoptychum, Wahner =S. exechoptycha. 
»  Boucaultianum ; Wright=S. Boucaultiana. 
n catenatum ; Wright=S. equalis. 
