BUFFALO SOCIETY OF NATURAL SCIENCES 



183 



The median dorsal scales are large, spatulate in form, measuring 3.5 mm. in 

 width anteriorly, and narrowing backwards to 1.5 mm.; length 4 mm. Surface 

 strongly punctate. — ^J. M. Clark, "On the higher Devonian faunas of Ontario 

 County, New York, Bull. 16, tl. S. Geol. Surv., 1885, P- 4^- 



If we compare the figures given by Clarke and by Williams (the 

 latter reproduced here as fig. 60), we find a very close correspondence. 

 Thus, Williams' figure id, might almost have been drawn from the 



:x4 



lb 



la 



X5 



Fig. 60. Bones and Scales of Rhadinichikys, Enlarged. 



Williams) 



(After H. U. 



I a-d, Rhadinichthys devonicus (Clarke). I a, flank scales; I b, fulcral scale; 

 I c, fragment of bone showing ornamentation of reticulated lines; I d, cranial plate 

 showing ornamentation. 



II a-d, Rhadinichthys anliquiis (Williams). II a, b, d, flank scales, showing 

 peg for articulation; II c, ridge scale. 



cleithrum of PalcBoniscus devonicus, figured (as a cranial plate) by 

 Clarke in his Plate i, figure 5; while Williams' figure ic, of a cranial 

 plate, agrees fairly well with Clarke's figure 6. Both these latter 

 show a cranial plate ornamented with more or less parallel lines 

 anastomosing in places. Williams' figure of the scales, la, agrees 

 with Clarke's figure 3, exccDt that in Clarke's figure the punctae are 

 not so clearly shown. 



