DISCINOCARIS BROWNIANA. 119 



In the ' Geol. Mag.,' 1882, p. 388, is a foot-note referring to some points of 

 similarity between Pinnocaris and Pholadocaris (op. cit., p. 388, pi. ix, fig. 16). 

 The latter has in its posterior region a narrow, triangular, sunken area occupied 

 by a thinner (?) test, without a suture. The front third, however, has a broad 

 cervical notch, and in this and its broader outline the German Pholadocaris 

 (Devonian) diifers from the British Pinnocaris (Silurian). 



XII. GeMus DisoiNOCAEis, H. Woodward, 1866. 



DisciNOCAEis, H. Woodward. Eeport Brit. Assoc, for 1865 (1866), Trans. Sect., 



p. 78. 



— — Quart. Journ. Geol. Soc, vol. xxii, 1866, p. 503; 



Geol. Mag., vol. viii, 1S66, p. 72. 



— Bifjshy. Thesaur. Silur., 1868, p. 74. 



— T. E. Jones. Geol. Mag., 1883, p. 462. 



— T. E. J. and H. W. Ibid., 1884, p. 348. 



_ — Eeport Brit. Assoc, 1883 (1884), p. 216. 



— — Ibid., 1884 (1885), pp. 75 and 78. 



— — Monogr. Brit. Palseoz. Phyllop., pt. 1, 1888, 



p. 2. 



— Etheridge. Foss. Brit., vol. i, Palteoz., 1888, p. 51. 



— Woods. Catal. Type Foss. Cambridge, 1891, p. 136. 



This Phyllopod has normally a round test, slightly conical, without a median 

 or dorsal suture, but an anterior triangular segment is separated from the rest of 

 the disc-shaped shield by a line of suture, and this is usually left as an empty 

 notch. The test is concentrically striated with lines of growth, and occasionally a 

 reticulate or a striate ornament is recognisable between them. 



Prof. A. E. von Reuss has figured and described from the Alpine Trias (Raibl 

 beds, near Hallstadt) a very similar form {Aspidocaris) : ' Sitzberichte k. Akad. : 

 Wissensch. Wien, Math.-nat. CI.,' vol. Iv, 1867, pp. 277—281, plate, figs. 1—5 ; 

 ' Geol. Mag.,' 1882, p. 386, and 1884, p. 351. 



1. DisciNOCAEis Browniana, H. Woodward, 186Q. Plate XVI, figs. 12 — 19, 21 — 23. 



DisciNoCAEis Beowniaka, H. Woodward. Eeport Brit. Assoc, for 1865 (1866), 



Trans. Sect., p. 78 ; Quart. Journ. Geol. Soc, vol. 

 xxii, 1866, p. 504, pi. xxv, figs. 4, 5(?), 7; Geol. 

 Mag., vol. iii, 1866, p. 72. 



