396 



MISS G. L. ELLES ON THE WENLOCK [May I9OO, 



of Chirbury, in a quarry behind Walcot Farm. Here the beds con- 

 sist of a series of earthy calcareous shales and flags dipping W. 10° N. 

 at 15°; they are richly fossiliferous, and evidently belong to the zone 

 of Monograptus riccartonensis, Lapw. The type-fossil is extremely 

 abundant. These beds have yielded Cyrtograptus flaccidus, Tullb., 

 Cyrtogratus sp., M. riccartonensis, M. capillaceus, M. dubius, M. 

 vomerinus, and M. priodon. (See Table VI, col. A.) 



Table VI. 



LONG- MOUNTAIN GEAPTOLITES. 



. § 



O S 



II 



- _t> 



N 



CD !S 

 O § 



Zone of 



Cyrtograptus 



rigidus. 



Zone of 

 Cyrtograptus 



Lundgreni. 



Names of Species and 

 Varieties. 



[C = very common ; c = common ; 

 r =. somewhat rare ; R = very 

 rare.] 



Note — The zone of C, symmetricus 

 is not exposed in the district. 



A 



B 



oi 

 cc 



n 

 



W 



& 

 







C 



'd 





 

 2: 



S) 



p 

 M 



C 



c 



c 



D 

 g 



<D 



f. 



c 



c 



c 

 c 



E 1 











cS 



c 



C 

 C 



E 2 



i 

 



U 



m 



13 

 gg 



C 



c 

 c 

 c 



V 



1 



a 



S 



c 



? 

 c 

 c 

 c 



G 



13 



CO 



C 



c 

 c 

 c 



R 

 R 



H 



c 

 



cS 



C 



c 

 c 



"0 







_£_ 



c 

 C 



C 



c 



c 



c 



Monograptus priodon (Bronn) 



M. vomerinus (Nich.) var. a 



M. ricca rtonens is, Lapw 



r 



c 



C 



c 



r 

 c 



Cyrtograptus flaccidus, Tullb. 



Monograptus tlnhius, Suess 



Cyrtograptus Linnarssoni, Lapw. 



Monograptus Ja-keli, Perner 



Cyrtograptus rigidus. Tullb 



Monograptus ntrojiexus, Tullb. 



M. Flemingii i v Salt.) var. a 



var. 3 





„ var. 



Cyrtograptus Lundgreni, Tullb. ... 

 M. testis (Barr.) var. inornatus now 

 Cyrtograptus tubuJiferus, Perner... 



The exposure occurs exactly where it might naturally be 

 expected that the M. -riccartonensis zone would lie : that is, a little 

 way above the base of the Wenlock Shales, as mapped by the 

 officers of the Geological Survey. So far as I have been able to 

 discover, the earlier zone of Cyrtograptus Murchisoni is not exposed 

 in the Long Mountain area, unless it be represented by some of the 

 shales near The Stubbs, where, as I have already pointed out, the 

 beds are apparently unfossilil'erous. This zone, however, is so 



