572 DR. A.S]VHTH WOODWARD OX TWO Is^EW SPECIES OF [DeC. I912, 



hinge-line, and more attenuated umbo in the pedicle-valve ; and 

 also by the absence of a well-marked fold and sinus. 



The occurrence of this form, so closely resembling the index- 

 species of the Semimila Zone in the South-Western Province, at a 

 much lower level in the jSForth- Western Province is of consider- 

 able interest. 



Horizon and locality. — Athyris-glabristria Zone (chiefly in 

 the upper portion of this zone). The specimen figured is from the 

 Camarotoechia-proava Band at the summit of the Solenopora Sub- 

 zone, at Low Meathop, Arnside District. 



SpIRIFERI^^A LAMiNosA M'Coy. (PI. LI, figs. 7 «-7 e & text-fig. 7.) 



The form figured here appears to belong to M' Coy's species ; but 

 his original figure is too poor for precise comparison, and the type- 

 specimen is unfortunately not preserved in the Grifiith Collection 

 at Dublin, although search has been made for it. It is certainly 



not a S 1/ r ingotJii/r is, a.s speci- 

 Fig. 7. — Specimen of Spiriferina lami- mens when rubbed down 



nosa, sliow'mg the delthyrium of the show only a single plate 



pedicle-valve (rubbed down). 



[Twice the natural size.] 



in the delthyrium of the 

 pedicle-valve (text-fig. 7). 

 The shell is characterized 

 by the abundance of coarse 

 punctations which are con- 

 spicuous along the hinge- 

 line, as well as in other 

 portions of the shell. 



This form is very charac- 

 teristic of the Productus cor- 

 rugatO' hemisphericiis Zone 



in the Kavenstonedale District, being found abundantly both in 

 the Ashfell Sandstone in the lower portion of the zone, and in the 

 Bryozoa Band at the summit of the zone. The specimen figured is 

 from the Lower Pr. corrugato-hemisphericiis Zone near the summit 

 of the Ashfell Sandstone, Ravenstonedale District. 



Appendix I. 



Description of the Teeth of Two New Species of Fishes 



from the Lower Carboniferous Rocks of the 



North-Western Province. 



By A. Smith Woodward, LL.D., F.R.S., Sec.G.S. 



Deltodus garavoodi, sp. nov. (PI. LII, figs. 2, 3 a, & 3 6.) 



Specific characters. — 'Upper' dental plate narrow, trian- 

 gular in shape, and scarcely curved ; antero-lateral and postero- 

 lateral borders nearly straight, the inner border bulging downwards 



