REPORT OF THE DIRECTOR IQII 



135 



Remains of larger fish are, 

 however, known. A specimen 

 in the American Museum lack- 

 ing part of the tail measures 

 14/^ inches, and when complete 

 must have been 18 inches in 

 length. Another large fish, 

 no. 2875 Yale Museum, is 

 about 15 inches long. Hence 

 Scaumenacia may be regarded 

 as having reached a length of 

 at least 18 inches; in other 

 words to have been as large, 

 full grown, as a medium sized 

 Neoceratodus. 



Restoration. The accom- 

 panying restoration (figure 3) 

 is based on a beautiful speci- 

 men in the New York State 

 Museum. This is a fish eight 

 inches long in a nodule of fine- 

 grained sandstone (plate 2). 

 It is almost uncrushed, which 

 is an important circumstance, 

 for Scaumenacia specimens 

 are usually badly distorted 

 through lateral pressure so 

 that the fish appears much 

 deeper than it must have 

 been in life. This specimen 

 shows all the fins save the 

 caudal, which is nearly all 

 missing. But this fin, fortu- 

 nately, is beautifully preserved 

 in another specimen of the 

 same size (7661 American 

 Museum). The State Mu- 

 seum specimen also shows the 

 scales so that their size and 

 imbrication can be clearly seen 

 on the greater part of the fish. 



