60 LABRID^. 



Synopsis of the Groups 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 series; cheeks and opercles 

 with imbricate scales ; (Jorsal spines not pro- 

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



Teeth in a single series ; cheeks and opercles 

 with imbricate scales ; dorsal spines not pro- 

 longed. L. lat. less than 40 • 2. Crenilabrus, p. 77. 



Teeth 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 ; operculum with a series of scales 

 along the lower margin, the rest of the oper- 

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



Teeth of the jaws forming a band ; cheeks and 



opercles scaly G. Ctenolabrus, p. 88. 



** ki?ial spines more than three. 



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



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



Second Group: Chceropina. 



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. Ch<eeops, p. 93. 



Third Group : Julidlua. 



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

 conical (compressed in Anamjyses); 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 pra^operculum naked ; a poste- 

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



The membrane of the soft dorsal scaleless ; both 

 limbs of the prseoperculum naked ; no poste- 

 rior canine tooth 11. Semicossvphus, p. 99. 



* Thirteen occasionally in Cossyphus rufus and in Cossyphus tredecimspinosus. 



