CONODONTS IN ARENIG-LLANDEILO FORMATIONS. 245 



Polygnathus parvus, new species. 



From a curved beam six slightly curved tcetli project; PI. V., 

 Fig. 6. 



Locality.— Normangill, near Crawford; in chert-shale. 



Polygnathus minus, new species. 

 From a curved beam a few curved teeth project; PI. V., Fig. 8. 

 Locality. — Glencaple, near Abington ; in chert. 



Polygnathus princeps, Hinde. 



On a straight or slightly curved beam a number (up to four- 

 teen) of straight or slightly curved teeth project at a sli-htlv 

 oblique angle; PL V., Figs. 9, 10, 12, 13. 



Locality. — Hunt Law Cleuch; in chert-shale. Note. — This 

 species has been found in the Devonian rocks of North Evans 

 New York. ' 



Polygnathus curvatus, new species. 

 From a straight beam seven curved teeth project, and are set 

 wide apart, an extra long one being sub-central; PI. V., Fig 11 

 Locality.-Hunt Law Cleuch, near Wanlockhead; in chert-^hale. 

 Polygnathus pauperatus, new species. 



From a short beam a few irregularly set teeth project; PI. V. 

 rig. 14. ' 



Locality.— Hunt Law Cleuch, near Wanlockhead; in chert^shale. 

 Polygnathus dubius, Hinde. 



From a nearly straight beam thirteen teeth project at an 

 oblique angle, the teeth being alternately large and small; 

 PI. v.. Fig. 15. 



Locality.— Hunt Law Cleuch, near Wanlockhead; in chert-shale. 



iVo^e.— This specimen is more than twice the size of Dr. Hinde'g 

 but IS much the same otherwise. This species has been found in' 

 the Devonian and Carboniferous rocks of North America. 



Polygnathus lanceolatus, new species. 

 On a curved beam eight curved teeth project at an oblique 

 angle, die sub-central one being large and with a sharp side; 



Locality.-Hunt Law Cleuch, near Wanlockhead; in chert-shale. 



