388 Dr. A. GiAnther's Synopsis of the Labroid Genera. 



Fourth Group : Pseudodacina. 



Each jaw armed with two pairs of broad incisors and with a 

 cutting lateral edge; teeth of the lower pharyngeal confluent, 

 pavement-like. 



East Indian Archipelago. 



32. Pseudodax, Bleek. (Odax, sp., Cuv. & Val.) Eleven dorsal 

 spines ; scales of moderate size, lateral line continuous ; cheeks 

 and opercles scaly. (P. moluccanus, Cuv. & Val.) 



Fifth Group : Scarina. 



The teeth in both jaws are intimately soldered together into 

 a broad convex cutting lamina, and become sometimes entirely 

 indistinct ; pharyngeal teeth pavement-like. Scales rather large. 

 From eight to ten dorsal spines*. 



Seas of the tropics; single species extending into the tempe- 

 rate regions. 



33. Scarus (Scarus, sp., Forsk., Cuv. & Val.; Scarus, Bleek.). 

 Cheek with a single series of scales ; the dentigerous plate of 

 the lower pharyngeal broader than long ; upper lip double in 

 its whole circuit ; dorsal spines pungent. 



34. Scarichthys, Bleek. (Scarus, sp., Cuv. & Val.) Cheek 

 with a single series of scales; the dentigerous plate of the 

 lower pharyngeal broader than long ; upper lip double in its 

 whole circuit ; dorsal spines flexible. 



35. Callyodon (Callyodon, sp., Gronov., Cuv. & Val.; Cally- 

 odon, Bleek.). Cheek with a single series of scales; the den- 

 tigerous plate of the lower pharyngeal broader than long; 

 upper lip double only posteriorly ; jaws with distinct oblong 

 imbricate teeth anteriorly. 



36. Callyodontichthys, Bleek. Cheek with a single series of 

 scales ; the dentigerous plate of the lower pharyngeal broader 

 than long; upper lip double only posteriorly; teeth of the 

 lower jaw distinct, disposed in oblique series. Dorsal spines 

 stout. 



37. Pseudoscarus, Bleek. (Scarus, sp., Forsk., Cuv. & Val.) 

 From two to four series of scales on the cheek ; the denti- 

 gerous plate of the lower pharyngeal longer than broad; 

 upper lip double only posteriorly ; dorsal spines flexible. 



Sixth Group : Odacina. 

 The edge of each jaw is sharp, cutting, without distinct teeth 



* The genera of this group having been lately worked out by Dr. von 

 Bleeker, we repeat shortly the diagnoses given by him. 



