PLATE 27 



Fig. I. Dinichthy's sp. Juvenile right antero-superognathal, in outer view; 

 natural size. E 1954, p. 62. 



Fig. 2. Dinichlhys newherryi? juvenile. Left antero-superognathal, in outer 

 view; natural size. E 1956, p. 49. 



Fig. 3. Dinichthys inso!il!cs,n.sp. Type. Right antero-superognathal. Natural 

 size. E 2387, p. 53. 



Figs. 4, 4a. Perissognalhiis adimciis, n. g., n. sp. Beak of a left mandible of 

 about same size as the type (see PI. 20), showing the symphyseal denticles well. 

 Natural size. 4, outer view; 4a, inner view. E 2165, p. 83. 



Figs. 5, 6. Dinomylo stoma? Two upper dental elements, in oral view. Natural 

 size. E 1S59 and E 2398, p. 90. 



Fig. 7. Small left antero-superognathal of an undetermined .\rthrodire. X f 

 JL 1946, p. 96. 



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