Manchester Memoirs, Vol. Ix. (1916), No. % 1 1 



add to the account of the gular apparatus given by 

 Huxley. One skull is so preserved as to show the dorsal 

 surface of the palate. As exhibited it consists of a broad 

 dorsally channelled parasphenoid whose lateral surfaces 

 are in contact apparently by specialised processes with 

 the pterygoids at about the middle of their length. 

 Where it is in contact with the parasphenoid the ptery- 

 goid consists of a nearly vertically placed sheet of bone 

 which is concave outwardly. As it is traced forwards 

 this concave shell becomes converted into a nearly hori- 

 zontally placed flange whose inner margin is in contact 

 or nearly in contact with its fellow in the middle line. 

 Behind the articulation with the parasphenoid, the verti- 

 cally placed shell is continued, its upper margin tending 

 to be directed outwards until at the extreme back of the 

 skull at the level of the quadrato-jugal the bone ter- 

 minates in an outwardly turned process which is in con- 

 tact with an ill-preserved mass representing the quadrate. 

 The quadrato-jugal lies to the outer side of this mass. 

 The lateral margins of the bone in the anterior part are in 

 contact with two bones, the posterior, the ectopterygoid 

 being a flat bone with a row of teeth near its outer edge, 

 the anterior the palatine, an exactly similar bone except 

 for the occurrence of a definite foramen whose border is 

 smooth and turned dorsally. The bone terminates just 

 in advance of this opening. Further forward lie the pre- 

 vomers, not well preserved, each of which is, however, 

 shown to bear a large tooth and to articulate with the 

 anterior ends of the pterygoids and palatines. 



The remainder of the fish seems to agree well with the 

 restorations published by Huxley and Goodrich, although 

 the pectoral fin is not quite so acutely lobate as it is repre- 

 sented in the latter's figure. This fin is represented in 

 PL /., Fig. 4, from which its structure will be obvious. 



