422 
ACTINOPTERYGII. 
anal. The quadrate, symplectic, epihyal, and ceratohyal 
hones are conspicuous. The delicate ribs are shown. 
Haberlein Coll. 
P. 6940. Fine specimen, 056 in length; Eichstadt. 
By exchange , 1893. 
37068. Head of a similar fish in lateral aspect, displaying the 
dentition of the maxilla, dentary, and splenial hones; 
Solenhofen. A small plate above the hinder end of the 
maxilla seems to be the supramaxilla. Haberlein Coll. 
P. 973. Another head with opercular apparatus, well preserved in 
lateral aspect, showing some of the ornament of the 
operculum and cranial roof. A small supramaxilla occurs 
above the hinder end of the maxilla ; and the apertures of 
the lateral line are conspicuous along the outer face of the 
dentary. Egerton Coll. 
P. 3805. Somewhat larger head, lateral aspect, with several bones 
crushed and displaced; Kelheim. The palato-pterygoid 
dentition is shown within the mouth, and part of the 
suture between the angular and dentary elements in the 
mandible can be distinguished. One of the branchial 
arches with its gill-supports is displaced below the 
mandible. The series of hranchiostegal rays is also well- 
shown, about 12 in number on one side, and there are 
remains of the ossified sclerotic ring. Enniskillen Coll. 
P. 970, P. 3806. Head and greater portion of trunk of a fish about 
0*45 in length, very imperfectly preserved in counterpart; 
Solenhofen. The position of the notochord is indicated 
by a vacant space, the absence of calcified ring-vertebrae 
being doubtless due to the immaturity of the specimen. 
The scales are smooth. Egerton Sf Enniskillen Colls. 
37803. Head and anterior abdominal flank-scales of a very small 
fish, with slender rostrum equalling nearly half of the 
total length of the cranium; Solenhofen. 
Haberlein Coll. 
P. 970 a. A slightly larger head with much elongated rostrum; 
Solenhofen. Egerton Coll. 
