304 



Dr. F. R. a Reed- 



is based. The ornamentation is preserved only on the lower half 

 of the surface, the concentric lines there numbering 14, from which 

 the total number on this shell is estimated to be about 30-40. 

 The general shape of the shell, the large prominent subcentral beak 

 and the course of the umbonal ridge much resemble the species 

 Tellinopsis subemarginata (Conr.) ^ of the Hamilton group of New 

 York, though the ornamentation is more like that of Ctenodonta 

 gihhosa (Goldf.).^ It should be remarked that the variety Kayseri 

 Beush. of the latter species (which seems to resemble our shell) is put 

 by Williams and Breger ^ in the genus Tellinites of which they 



Fig. 1. — Tellinopsis devonica sp. nov. Nat. size. Meadfoot Beds, 

 Kilmorie. (Sedgwick Museum, Cambridge, S. 76.) 



legard Tellinopsis as merely a subgroup. The large subcentral 

 non-prosogyrous beak of Tellinopsis seems an important external 

 ■difference from Ctenodonta and from its subgenus Kanenia 

 Beushausen, which the above-mentioned American authors consider 

 to be a synonym for Tellinites McCoy. 



Tellinites ? lavisidcus (Etheridge). 

 No precise diagnosis of the specific characters of this shell was 

 given by Etheridge,* but he made some general remarks on the 

 specimens and on the probable affinities of the species, stating that 

 the posterior side of the shell " seemed to show the ridge which 

 characterizes Cypricardia " and that the species somewhat resembled 

 Orthonota {Cypricardia) semisidcata Sowerby, as figured by Phillips 

 {Palceoz. Foss. Cornw. Dev., pi. 17, fig. 57). But the beaks are 

 apparently subcentral, the umbonal lidge is practically obsolete, 



1 Hall, PaZceoni. Neio York, \o1.y, pt. ii, 1879, p. 464, pl.lxxvi, figs. 21-31. 



^ Beushausen, op. cit., t. vi, fig. 16. 



3 Williams and Breger, op. cit., pp. 163, 165, pi. xix, figs. 3, 9, 11, 13, 15, 16. 

 (? pi. XXV, figs. 1, 3, 4, 5, 12). 



* Etheridge, Geol. Mag., 1882, p. 154, pi. iv, fig. 4 (? 5) {Cypricardia 

 lubvisidcus). 



