EXPLANATION OF PLATE VII. 
Fig 
1. 
2 . 
3 - 
4 - 
5 - 
6 . 
7 - 
8 . 
9 - 
10. 
11. 
12 . 
Dicranograptus ramosus , Hall (stem only, older variety). 
}} Nicholsoni , Hopk. 
Dicellograptus caduceus , Lapw. 
„ sextans , Hall. 
„ anceps, Nich. / t 
„ Morissi, Hopk. l 
„ Forchammeri, Geinitz. 
„ elegans , Carr. 
} , Moffatensis , Carr. 
var. divaricatus. Hall. 
Ccenograptus gracilis , Hall. 
surcularis , Hall. 
>> 13 .^pet tenuis, Lapw. 
„ 14- Leptograptus fiaccidus , Hall. 
} , 15a. Didymograptus super stes^ Hall. 
,, 16. Thamnog raptus typus (?), Hall. 
,, 17. Dictyonema Moffatensis , Lapw. 
, 18. Corynoides calyculans , Nich. 
19. „ curtus , Lapw. 
„ 202. Acrothele sp., A . granulata, Linars. 
ur. Geol., Stockholm, 1877). 
„ 21a. Acrotreta Nicholsoni, Dav., Coalpit Bay. 2 lc b, from original figure 
of species (Geo. Mag., 1868, PI. XVI). 
Discina Portlockii, Geinitz. Various examples. V 
Dauosonia campanulata , Nich. Various examples. — 
153, portion of distal extremity. 
e( 
73 
20$ <r, from original figure ( Afdreg. 
„ 22. 
„ 23. 
„ 24a 
„ 25^ 
. 
Peltocaris aptfchoides, Salter (Tie veshilly^ghtly contorted specimen, 
24 b, from Ws original figure (Q.J.G.S., Vol. / 
Discinocaris Broivniana , H. Woo^Coalpit Bay). 25^, Dobbs Linn, 
Dumfries. 25c, from original figure of species (Q.J.G.S., Vol. 
XXII., PL XXV.). ^ -(,^£0 
XV' 
. 5 ° 
