16 R. ETHERTDGE, JTJN., ON LOWER-CARBONIFEROUS INVERTEBRATA. 



Schizodtts Salteri, R. Etheridge, Jun. PL II, fig. 19. 



Schizodus Salteri, R. Eth., Jun., Ann. & Mag. Nat. Hist. 1875, 

 xv. p. 431, pi. 20. figs. 6-9. 



The examples from the Lower Carboniferous of this neighbour- 

 hood do not essentially differ from Fifeshire specimens, except per- 

 haps that the concentric striae are a little less marked. 



Loc. and Horizon. In shale with marine fossils at Woodhall, as 

 before. In a shelly ironstone at Drumsheugh, Water of Leith, at 

 Dean Bridge, near Edinburgh ; in shale, with other marine fossils, 

 behind West Breakwater, Granton ; in ditto at Craigleith Quarry, 

 above the sandstone. 



Genus Anthracosia, King. 

 Anthracosia, King, 1844, Ann. & Mag. Wat. Hist. xiv. p. 313. 

 Anthracosia ? (Unio) nucleus, Brown ? PL II. fig. 20. 



Aocinus pentlandicus (pars), Rhind, Age of the Earth, 1836, 

 pi. 2. fig. a. 



Pachyodon nucleus, Brown, Ann. & Mag. Nat. Hist. 1843, xii. 

 p. 394, pi. 16*. fig. 1. 



TJnio nucleus, Brown, Eossil Conchology, 1849, p. 178, t. 73. 

 fig. 8. 



Ohs. 1 have already pointed out * that I believe Dr. Rhind figured 

 two separate species under the name of Axinus pentlandicus. One 

 of these figures (fig. b) is, I think, the shell now known as Schizodus 

 Salteri, mihi. The other (fig. a) was that to which Captain T. 

 Brown gave the name of Pachyodon (or Unio) nucleus. The original 

 locality was Woodhall, Water of Leith. A very ill-preserved shell 

 in Mr. Henderson's collection has, so far as can be ascertained, the 

 general outline of Unio nucleus ; but it is impossible, on the cha- 

 racters afforded by it, to give a description of the species. 



Loc. and Horizon. In hardened shale, lowest part of the Cement- 

 stone group, quarry on the north side of the Colinton Road, under 

 Craiglockhart Hill, near Edinburgh. 



Genus Anthraoomya, Salter. 

 Anihracornya, Salter, 1861, Iron Ores Gt. Britain, pt. iii. p. 229. 



Anthracomta scotica, R. Eth., Jun. 



Anihracornya scotica, R. Eth., Jun., Geol. Mag. 1877, dec. 2. iv. 

 p. 244, t. 12. fig. 8. 



Obs. A few fragments which appear referable to this character- 

 istic fossil are in Mr. Henderson's collection. They are much too 

 fragmentary for description or figuring. 



Loc. and Horizon. In black shale of the Wardie series, Water of 

 Leith, at Katesmill, near Slateford, Edinburgh. 



* Ann. & Mag. Nat. Hist, 1875, xv. p. 432. 



