BUFFALO SOCIETY OF NATUEAL SCIENCES 63 



/. Dorsal and lateral plates 



E 1998 Half of a postero-dorsolateral, ornamented with small, non- 

 stellate tubercles on the non-overlapped portion (PI. 13, 

 %• 5)- 



E 2004 Antero-dorsolateral of a small dinichthyid, finely tuber- 

 culated. 



E 1991 Portion of a lateral or ' 'clavicular" plate. 



g. Ventral plates 



E 1989 Portion of a small ventral plate, without ornamentation. 



E 1990 Imperfect postero-ventrolateral (?) of a small dinichthyid, 

 without ornamentation. 



E 1993 Antero-ventromedian of a small dinichth5dd. 



E 2000 Ventral plate of a small dinichthyid, finely tuberculated, 



E 2002 Ventral (?) bearing fine tuberculation; same species as 

 preceding. 



E 2389 A juvenile right antero-ventrolateral (PL i8, fig. 2). The 

 plate is very thick for a specimen of such small size, but 

 the same condition was observed by us in one or two 

 other small specimens, and is, perhaps, a characteristic 

 of juvenile ventral plates in some species. The outer 

 face is ornamented with small non-stellate tubercles, 

 which are especially well-shown on the posterior half of 

 the plate, where the outer surface is well-preserved; on 

 the anterior half of the plate, the external surface is some- 

 what abraded and no tubercles are preserved. 



Length, 114 mm.; greatest width (slightly restored) 

 43 ; maximum thickness (at about one-third the length 

 of the plate from the anterior margin and near the outer 

 half), 13. 



h. Fragmentary plates 



E 1996 Incomplete plate of a small dinicthyid, ornamented with 

 stellate tubercles rather larger than those of Dinichthys 

 pustidosus. (PI. 17, fig. 2). 



