248 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



Subpi'ioniodus ohliquo-lanceolatus, new species. 



The much obliquely set spike projects but little below the 

 beam. Half of the slightly curving beam next the spike carries 

 five small curved teeth on its upper side, and one near the 

 middle on its under side; PI. VII., Fig. 30. The beam is pro- 

 jected into a long, slender point. 



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



Subpriouiodus equalis, new species. 



A rather stout spike, nearly equal in length to the beam, 

 projects under the latter for a short distance. The beam carries 

 four obliquely set teeth. The spike has a sharp side, and so has 

 the beam for a bit; PI. VII., Fig. 31. 



Locality. — Ravengill, in Glencaple, Abington ; in shale, nest 

 chert. 



Suhprioniodus peracutus, new species. 



The spike projects obliquely below the beam for about a third 

 of its length. The beam carries fourteen teeth, the sixth one 

 from the spike being twice as long as the rest; PI. VII., Fig. 32. 



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



Suhprioniodus acutus, new species. 



The spike projects slightly below the beam, and ends in a 

 strong base. The beam is extra strong, and carries eight teeth, 

 some of which are equal in length to the spike. The cross-bars 

 shown on the teeth are probably shrinkage cracks; PI. VII., 

 Fig. 33. 



Locality. — Head of Glenkip, Leadhills ; in chert-shale. 



Suhjirioniodus huntlaivensis, new species. 



The spike is about equal in length to the beam, and its 

 projecting part under the beam is cleft at the end. The beam 

 carries seven to eight straight or slightly curved teeth. Shrinkage 

 cracks are strongly shown; PI. VII., Figs. 34:A, 34b. 



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



Suhprioniodus cringcrampensis, new species. 



The spike is very short — not longer than several of the teeth. 

 The curved beam carries thirteen curved teeth of irregular sizes ; 

 PI. VII., Fig. 35. 



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



