BUFFALO SOCIETY OF NATURAL SCIENCES 173 



the teeth figured by Hussakof might represent the premaxillaries. 

 However, the specimen found by Mr. Bryant seems to indicate that 

 these teeth are true vomerines. 



In the specimen previously described, the vomerines had respec- 

 tively four and five cusps. In the present one there are two and three. 

 This indicates that the number of cusps or serrations was not con- 

 stant, but varied in different individuals, and probably also with age. 

 "In view of this serrated condition the vomerines of Scaumenacia 

 may be regarded as more primitive than those of the adult Neocera- 

 todus. They resemble somewhat the vomerines of the embryonic 

 Neoceratodus as described by Semon."** (Hussakof, loc. ciL, page 

 I37-) 



E 2520 A large fish lacking the head, but showing all the fins and 

 the lateral line in great perfection. The body is not so 

 distorted as in most small specimens of this species. In 

 the same matrix is the impression of a dorsal shield of 

 Bothriolepis. 



E 2522 Crushed head, shown from above, and displaying dentition. 



E 2523 Small fish lacking head; in counterpart. It shows nearly 

 a complete series of neural and haemal spines, the clei- 

 thrum and other details. Length 10.5 cm. 



E 2524 Fish, in counterpart, showing the head; dorsal, caudal and 

 anal fins; also the eye, jaws, scale ornamentation, cal- 

 cified neural and haemal spines, and fin supports. 

 Length 11 cm. 



E 2525 Small fish, showing both dorsals, the anal and caudal fins 

 also haemal spines and the lateral line. Length 11. 5 cm. 



E 2526 Fish lacking head, but showing both dorsals, the anal and 

 part of the caudal. Length 1 2 cm. 



E 2527 Fish, in counterpart, showing the second dorsal, caudal, 

 and anal fins; also the clei thrum, and the lateral line. 

 Head crushed. Length 16.5 cm. 



s^Semon, R.: Die Zahnentwickelung des Ceratodus forsteri. Zool. Forsch. in Austral, u. Malay 

 ArchipeL, 115-135. pl- xviii-xx, 1899. 



