PLATE XIX. 
Fig. 
1. Xiphiorhynchus priscus ( Agassiz); portion of skull, supe- 
rior and left lateral (1 a) aspects. — London Clay ; 
Sheppey. eth. Ethmoid, fr. Frontal, mx. Maxilla. 
na. Nasal, pmx. Premaxilla, prf. Prefrontal (ect- 
ethmoid). scl. Sclerotic. 1 b. Oral face of right pre- 
maxilla. [28711-] 
2. Ditto ; hinder portion of skull, superior aspect. — Ibid. 
ep.o. Epiotic. fr. Frontal, pci. Parietal. /><•/• 
Postfrontal (sphcnotic). s.occ. Supraoceipital. S( J- 
Squamosal. [32387.] 
3. Accstrun ornatus, sp. nor. ; portion of skull, superior 
aspect. — Ibid. Letters as above. [P. 1739.] 
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