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BRITISH PALAEOZOIC PHYLLOCARIDA. 



circular test ; the notch (without the innermost small notch) is 3 mm. deep and 

 4 mm. broad. 



PI. XVI, fig. 1. Valves obscure, black films on black graptolitic shale. From 

 Eldinhope, Selkirkshire. Coll. Lapworth. British Museum. No. 59620. 



Measurements : | , 11 mm. ; — , 7 mm.; A, 4 mm. at about 45°; I, 4 mm. ; 

 7 mm. ; V, about 90°. 



PI. XVI, fig. 2. Valves, light-brown films on grey shale weathering brownish. 

 From the Grieston beds of the Gala Group, at Rotten Gair, Innerleithen. Coll. 

 Lapworth. British Museum. No. 59620. 



Measurements : | , 8 mm ; — , 5 mm. ; A, 4 mm. at 60° ; I, 2 mm. ; v _„ 4 mm. ; 

 V, 60°. 



PI. XVI, fig. 3. Valves, black shiny films on black subbituminous shale ; 

 slightly displaced by oblique pressure. From Duffkennell, Dumfriesshire. Coll. 

 Harkness. Mus. Pract. Geol. d | -jy, -^c. This is probably the specimen figured 

 by Mr. Salter in 1852 (pi. xxi, fig. 10) ; but our drawings do not quite coincide. 



Measurements : | , 9 mm. ; — , 6 ? mm. The sides of the notch are too much 

 displaced for accurate measurement. 



PI. XVI, fig. 9. Valves, slightly separated, are small, black, shiny films, with 

 minute grey bits of the smooth test. The notch is deep, but obscured by matrix. 

 The test, when perfect, would have been round. In black shale from a burn 

 opposite the house of a farm called Polmoody, on the road to Dobbs Linn, which 

 is at the top of Moffat Water, about thirteen miles from Moffat. Collected by 

 Mr. D. J. Brown, of Moffat. This is probably a young form of P. aptychoides. 



Measurements : | , 3 mm. ; — , 3 mm. ; A, 3? at 70° ? ; 2 ? mm. ; I, 2 mm.; 

 V , 40°. Width to length as 6 to 5 ? 



2. Peltocaeis anatina, Salter, 1873. Plate XVI, figs. 4 — 9. 



Peltocaeis anatina, Salter. Catal. Paircoz. Foss. Cambridge, 1873, p. 93 (not 



the figure nor the locality). 



— — H. Woodward. Catal. Brit. Poss. Crust., 1877, p. 77. 



— — T. It. J. and H. W. Geol. Mag., 1884, p. 355. 



— — — Report Brit. Assoc., 1SS4 (1885), 



pp. 76 and 93. 



— — Etlieridcje. Poss. Brit., vol. i, Palaeoz., 1888, p. 62. 



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



In 1873 (op. cit.) Mr. Salter mentioned this species, but it was not figured. 

 The diagram annexed to it, and given in illustration of the generic type, is 

 P. aptychoides. That a Peltocaris was intended here is evident from the words 



