28 



Order III. PHARYNGOGNATHI. 



Suborder I. MALACOPTERYGII. 



86. The anterior part of the skull of a species of Scomber esox it is remarkable for 



the long and slender muzzle, formed principally by the premaxillary and 

 dentary bones. Hunterian. 



Suborder II. ACANTHOPTERYGII. 

 Family Labridce. Wrasses. 



87. The dried head of a large species of Wrasse (Labrus), showing, even in 



their present shrunken state, the unusual development of the external lips, to 

 which the name of the genus refers. The relative position, and the form of 

 the single lower pharyngeal bone, and of the two upper pharyngeals, are 

 well shown in this specimen : the latter play backwards and forwards upon 

 articular surfaces of the basisphenoid, which are concave mesially, convex 

 laterally : the upper pharyngeals show co-adapted convexities and concavities. 



Mm. Brit. 



88. The dried head of a small Labroid fish, showing the four laniary teeth at the 



fore-part of the premandibular and premaxillary bones, the two smaller laniary 

 teeth at the posterior part of each premaxillary, and the intermediate row of 

 minute subequal teeth. The corresponding teeth of the lower jaw are rather 

 larger : on the inner side of these in both jaws there is a narrow band of 

 villiform teeth. The two triangular superior pharyngeal bones with their 

 pavement of rounded molars are preserved in this specimen. Hunterian. 



89. The dried head of a small Wrasse (Julis). Hunterian. 



90. The dried head of the same species of Wrasse. Hunterian. 



91. One premaxillary and both premandibular bones of a Wrasse (Mis), showing a 



similar type of dentition, but with a larger proportional size of the posterior 

 teeth in the lower jaw. Hunterian. 



