140 DEVONIAN FAUNA. 
I think, be distinguished by the number and angularity of its plaits. The 
specimens which Maurer figures as C. rhomboidea appear to belong to the present 
species. In general shape it bears some resemblance to Ah. ? anisodonta. 
Terebratula brachyptycta, Schnur,' approaches it, but is a less triangular shell 
with a more convex front margin. 
4. CAMAROPHORIA P RHOMBOIDEA, Phillips, sp. Pl. XVI, figs. 3, 3a, 3b, 4, 4a. 
1841. TrEREBRATULA RHOMBOIDEA, Phillips. Pal. Foss., p. 88, pl. xxxv, fig. 158. 
? 1843. — SEMINULA, F, A. Romer (not Phillips ?).2 Verst. Harzgeb., 
p. 17, pl. v, figs. 17 a—e. 
1843. — RHOMBOIDEA, F. A. Rimer. Verst. Harzgeb., p. 16, pl. v, 
figs. 24a, b, 25. 
1854. — BIsuGATA, Schnur. Paleontographica, vol. ii, p. 178, pl. 
xxii, figs. 7 a—e. 
1865. CAMAROPHORIA RHOMBOIDEA, Davidson. Brit. Foss. Brach., vol. iii, pt. 6, 
p. 70, pl. xiv, figs. 19—22. 
1882. — ? = Davidson. Ibid., vol. v, pt. 1, p. 48. 
1887. _ “= Tschernyschew. Mém. Com. Géol., vol. in, 
pt. 3, p. 79; pl. iv, aes 
10, 12. 
Localities —From Barton are five specimens in the British Museum (including 
the originals of Phillips’s fig. 158, and Davidson’s pl. xiv, fig. 21). There are 
two very fine specimens in the Torquay Museum, and three in the Bristol Museum 
(which are typical but without any locality, and may be foreign shells). I have 
twenty-three specimens from Lummaton, and there are six in the Woodwardian 
Museum. From Wolborough there are two specimens in Mr. Vicary’s Collection. 
Remarks.—My own specimens are generally small and indistinct, and I see on 
them very little indication of any median septum. The larger specimens in the 
Torquay and Bristol Museums are just like Davidson’s figures. 
Judging from my specimens, it differs from Rh. Ogwelliensis by its sharper and 
narrower beak with more arching sides, by the greater curvature of the lateral 
margins, by the straighter vertical contour of the dorsal fold, and by the greater 
prolongation of the front margin. 
From C. Lummatonensis it is distinguished by having fewer and much more 
rounded ribs, which are low rounded folds instead of sharp angular plaits. 
1 1854, Schnur, ‘ Paleontographica,’ vol. iii, p. 178, pl. xxiii, figs. 6 a—e. 
2 1837, Phillips, ‘Geol. Yorks.,’ vol. ii, p. 222, pl. xii, figs. 21—23. 
