66 LABKID^. 



Synopsis of the Oroups and Genera. 

 First Group : Labrina. 



Dorsal fin many-rayed, composed of more than twenty rays, thir- 

 teen of which at least are spinous. All the teeth in the jaws are 

 conical ; no posterior canine tooth. 



* Anal spines three. 



Teeth in a single s'^ries ; cheeks and opercles 

 with imbricate scales ; dorsal spines not pro- 

 longed. L. lat. more than 40 1 . Labrus, p. 69. 



Teetli in a single series ; cheeks and opercles 

 with imbricate scales ; dorsal spines not pro- 

 longed. L. lat. less than 40 2. Chenilabrus, p. 77. 



Teetli in a single series ; cheeks and opercles 



scaly ; anterior dorsal spines much produced. 3. Lachnolaimus, p. 87. 



Teeth in a double series ; scales on the cheeks 



rudimentary ; opercles naked 4. Tautoga, p. 87- 



Teeth in a single series ; imbricate scales on the 

 cheeks ; opercidum with a series of scales 

 along the lower margm, the rest of the oper- 

 cular apparatus being naked 5. Malacopterus, p. 88. 



Teeth of the jaws forming a band ; cheeks and 



opercles scaly 6. Ctenolabrus, p. 88. 



** Anal spines more than three. 



Teeth in the jaws forming a band 7. Acantholabrus, p. 91. 



Teeth in a single series 8. Centrolabrus, p. 92. 



Second Group: Choeropina. 



Dorsal fin with twenty rays, thirteen of which are spinous. The 

 lateral teeth are more or less confluent into an obtuse osseous ridge, 

 whilst the anterior remain free, conical. 



Cheek elevated 9. Ciicerops, p. 93. 



Third Group : Julidina. 



Dorsal fin with less than thirteen spines* ; anterior teeth free, 

 conical (compressed in Anampses); teeth of the lower pharyngeal 

 not confluent or pavement-like. 



* Eleven or twelve (ten) dorsal spines; lateral line not interrupted; cheeks and 



opercles scaly. 



The membrane of the soft dorsal scaleless ; both 

 limbs of the prwoperculmn naked ; a poste- 

 rior canine tooth. L. lat. 26-28 10. Xipiiochilus, p. 98. 



The membrane of the soft dorsal scaleless ; both 

 Umbs of the prseoperculum naked ; no poste- 

 rior canine tooth 11. Semicossyphus, p. 99. 



* Thirteen occasionally in Cosm/phus rufus and in Cossyphus tredecimspinosus. 



