PELTOCARIS ANATINA. 115 



" its semi-oval rostrum is seldom found." The specimen (from Rebecca Hill) 

 referred to in the ' Cambr. Catal.,' 1873, p. 93, is an A'ptychopsis (with an angular 

 notch, see PL XV, fig. 2). There is, however, in the Woodwardian Museum an 

 oval Phyllopod shield, having a semi-oval notch (PI. XVI, fig. 5), which is thought 

 to be such a fossil as Salter intended for his P. anatina, if not the specimen itself. 

 It was collected by Mr. J. B. Marr, F.R.S., on the west side of Long Sleddale, in 

 a graptolitic mudstone of the Coniston series. 



PI. XVI, fig. 5. The valves are here represented by delicate grey films on 

 dark-grey shale. They have been probably somewhat narrowed by lateral pressure. 



The measurements in the present condition of the fossil are : | , 6 mm. ; 

 — , 3 mm. ; _y , 4 mm. at 65°; ^_,, 3 mm. ; I, 4 mm. ; V, 50°. The width to 

 length as 6 to 10. 



PI. XVI, fig. 4. Valves, pyritous films in black subbituminous shale ; nearly 

 perfect, but the notch is partly obscured by ovei'lying matrix, and somewhat 

 restored in our figure. This has a more oval outline than figs. 1, 2, and 3 ; and 

 may be referred to P. anatina. Probably from the Moffat shales. Coll. J. Farie. 

 Mus. Pract. Geology, d^. 



The measurements are imperfect : | , 9 mm. ; — , 5 mm. ; A; 4 mm. at 65° ; 

 ,_„ 4 ? mm. ; I, 4 ? mm. ; V, about 50°. The width to length as 10 to 13. 



PI. XVI, fig. 6, is a perfect test, obovate in outline, broad and round anteriorly, 

 and rather pointed behind. Valves, shining black films on black graptolitic shale, 

 from the Moffat series, at Whitehope Burn, St. Mary's Loch.^ Coll. Lapworth. 

 British Museum. No. 59620. 



Measurements: | , 9 mm.; — , 4 mm.; A, 3 mm. at 70°; ^ ^, 3 mm.; 



I, 3 mm. ; V, 40°. Width to length as 8 to 12. 



PI. XVI, fig. 7. Valves, black films on black shale. Streamlet, Craigdasher 

 Hill, four miles west of Dunscore, Dumfriesshire. Geol. Surv. Scotland. M. 4490. 



Measurements: | , 5 mm.; — , 3 mm.; A, 2 mm. at 70°; ^_,, 2 ? mm. ; 

 I, 2 mm. ; V, 40°. Width to length as 6 to 7 P 



PI. XVI, fig. 8. Valves, small shining black films, on black graptolitic shale. 

 From Garpel Glen,^ about four miles to the west of Moffat. Coll. D. J. Brown. 



Measurements : | , 5 mm. ; — , 3 mm. ; _/ , 3 mm. at 70° ; ,_,, 2 mm. ; 

 I, 2 mm. ; V , 40°. Width to length as 6 to 7 ? 



' See ' Quart. Journ. Geol. Soc.,' vol. xxxiv, 1878, pp. 265, 274, and 279. 

 2 Ibid., vol. xxxiv, 1878, p. 290. 



