BUFFALO SOCIETY OF NATURAL SCIENCES 117 



pronounced beak; not perfectly straight, but with a gentle elevation 

 at a point somewhat in front of the middle of the element, from which 

 it falls away gently on either side. Below the beak a spiniferous 

 process. 



Remarks. — This species is readily distinguished by the proportion of 

 length to depth of the element; by the gentle undulation of the 

 cutting margin and by the strong beak. 



We take pleasure in naming this species for Mr. Edgar E. Teller, of 

 Buffalo, N. Y., in appreciation of his valuable work in collecting and 

 studying the Devonic fishes, especially those of the Hamilton of 

 Wisconsin. 



The following specimen probably also belongs to this species: 



Fig. 39. Rhynchodus telleri. n. sp. Dental Plate, Natural Size 

 Cotype No. i. E. 2436 



E 2435 A dental plate in matrix, shown in inner view. The beak 

 is lacking, but the region below it is well shown. This 

 forms a ridge in the region of the symphysis. The an- 

 terior two-thirds of the cutting margin is also lacking, 

 but from the posterior third, which is well-preserved, it is 

 seen that the cutting edge extended to the extreme end of 

 the element, as it does also in Cotype No. i. Total 

 length, 76 mm. (including 2 mm. allowed for missing por- 

 tion of beak) ; depth at hinder third (which is perfectly 

 preserved), 13. 



Conodont bed (Genesee); Eighteen Mile Creek, near 

 North Evans, Erie County, N. Y. Collected by W. L. 

 Bryant. 



Rhynchodus ornatus, n. sp. 



(PI. 39, figs. I, I a, 2) 



E 1950 Cotypes. Two left lower dental plates, lacking the pos- 

 terior extremities, (i) Length, 50 mm.; height (at 

 middle) 20. (PI. 39, figs, i, la). 



E 1950(a) (2) Length, 45 mm.; height 20 (PI. 39, fig. 2). 



