PERCOIDS. 89 



teeth on the intermaxillary and premandibular bones, besides the 

 villous teeth in the ordinary situations. 



In the Lucio-perca, a row of longer pointed teeth are intermixed 

 with the villous teeth of both the maxillary and palatine bones ; they 

 are most developed in the lower jaw and the palatine. There are no 

 lingual teeth. 



The Enoplose of New Holland, {Chcetodon armatus, Shaw), 

 instead of the hair-like teeth of the genus to which it was originally 

 referred, has a narrow band of villous teeth on each intermaxillary, 

 premandibular and palatine bone, and a small transverse band upon 

 the vomer ; the tongue is also similarly armed at its base ; the rest of 

 the organization of this fish is in like manner conformable to the 

 percoid type. 



Villous teeth constitute the only armour of the mouth, accord- 

 ing to Cuvier, in the Percoid genera, Apogon, Cheilodipterus^ 

 Pomatomus, Anabassis, AsprOy Grammistes, Acernia, Polyprion, Pen- 

 taceros, Centropristis, Grystes, Rypticus, Chironemus, Centrarchus, 

 Pomotis, Priacanthus, Dules, Therapon, Datnia, Pelates, Helotes and 

 Polynemus. 



In the Uranoscopus, the mouth is cleft in the vertical direction 

 behind and nearly parallel with the anterior facet of its cubical head. 

 The teeth of the upper jaw (intermaxillaries) are villiform and arranged 

 in three rows, the middle ones of the posterior row being the largest. 

 In the lower jaw there are six large conical teeth on each side, set wide 

 apart in a single row, with some villiform teeth in the middle. The 

 vomer has a small band of villiform teeth on each of its anterior 

 angles ; the palatines are armed with somewhat larger teeth ; the 

 tongue and branchial arches are edentulous ; the pharyngeal bones 

 have rasp-like teeth. 



The Mullet and Surmullet {Mullus harbatus and Surmuletus) are 

 but feebly provided with teeth ; the intermaxillaries and palatine bones 

 are edentulous ; there is a narrow band of villiform teeth on the lower 

 jaw ; and a large oval plate covered with a pavement of small obtuse 

 teeth on the vomer. The Upeneus vittatus, or Mullus vittatus of 

 Forskael, has villous teeth like the Percoids, on the intermaxillary, 

 premandibular, palatine and vomerine bones ; in the Upeneus flavo- 

 lineatus, the teeth are wanting on the palatines. 



