﻿Vol. 66.'] SPECIES OF AMMONITES AND BRACHIOPODA. 105 



Waldheimia angustipectus, Rothpletz. 1 Forms agreeing with 

 his figs. 6, 7, 15, & 16 (pi. vii) have been found in the Irony Bed 

 (blagdeni zone, Bajocian) of Louse Hill near Sherborne (Dorset). 

 His fig. 12 of pi. vii appears to be similar to the Waldheimia 

 haasi, S. Buckman (in Davidson, 4 Mon. Brach.' App. to Suppl. 

 1884, pi. xix, fig. 11), also from the same place. Certainly W. 

 angustipectus is a development of W. haasi, Davidson, pi. xix, fig. 12, 

 through pi. xix, fig. 11 , in the direction of losing the dorsal sulcation. 



The Waldheimia waltoni, Eothpletz (op. cit. p. 123 & pi. vii, 

 fig. 31), is not Davidson's species, but is very near to .Zeilleria 

 ferruginea, S. Buckman, 1901. 2 This is also from the Irony Bed 

 of Louse Hill. To these apparently must be added Terebratula 

 lowensis, described above (p. 99). 



Another English species of the Vilser Alpen Dogger is charac- 

 teristic in this country of a zone a little way lower down — the 

 discites zone, see Table I (stratigraphical paper, p. 55). This 

 species is 



Norella liostraca (S. Buckman) = Rhynchonella bilobata, 

 S. Buckman 1882, and Davidson 1884, which was, on account of 

 the prior use of bilobata, named Rhynchonella liostraca by me, in 

 Oeol. Mag. dec. 3, vol. iii (1886) p. 217 (May). The same species 

 was named by Prof. Bothpletz Rh. securiformis in December 1886. 3 



As it is a reversed Bhynchonellid — dorsally instead of ventrally 

 sulcate, it is more suitably placed as Novella than as lihynchonella. 

 It is a most singular species, belonging to the discites zone 

 (Bajocian) ; and is very rare in this country. It does not seem 

 to be common in the Vilser Alpen. 



Prof. Rothpletz's work shows the necessity for the following 

 change of name : — 



Hhtnchonella cymatophorlna, nom. nov. This name is to 

 replace Rh. cymatophora, S. Buckman, 4 as Rh. cymatophora is pre- 

 occupied by Eothpletz, 1886. 



In connexion with the species from the Irony Bed of Louse 

 Hill, it may be noted that Waldheimia bohmi, Bose (in Parona), 5 

 has the most remarkable likeness to Waldheimea brodiei, S. 

 Buckman (in Davidson), which is a species from the Irony Bed 

 (blagdeni zone). 



The thin Irony Bed of Louse Hill, 2 to 3 inches thick, is one 

 of the most remarkable repositories of Brachiopod species in 



1 Op. jam cit. p. 131 . 



2 Proc. Cotteswold Nat. Hist. F.-C. vol. xiii (1901) p. 260 & pi. xiii, fig. 4. 



3 Op. supra cit. pi. ix, figs. 58 & 59. 



4 'Bajocian of the Mi d-Cottes wolds ' Quart. Journ. Geol. Soc. vol. li (1895) 

 p. 447. 



5 ' Fauna & Eta degli Strati con Posidonomya Alpina ' Pal. Ital. vol. i (1895) 

 p. 31 & pi. ii, figs. 21-23. 



6 'Monogr. Brit. Jur. Brach.' App. to Suppl. (Palseont. Soc.) 1884, p. 266 & 

 pi. xix, figs. 14-15. 



