LABRID^. 67 



Base of the soft dorsal naked ; both limbs of the 

 prteoperculum naked, not serrated. L. lat. 

 45-62; a posterior canine tooth 12. Trochocopus, p. 100. 



The membrane of the soft dorsal scaleless ; pra- 

 operciilum with the lower lirab scaly, and 

 with the posterior naked and serrated 13. Decodon, p. 101 . 



Base of the dorsal fin scaly. D. ^■^^. A.—. 



•' 11-10 10 



Prteoperculum serrated 14. Pteragogus, p. 101 . 



The membrane of the soft dorsal is scaly at the 



base ; dorsal spines twelve 15. Coss yph us, p. 102. 



The soft dorsal is enveloped in scales ; teeth very 



small 16. Clepticus. p. 111. 



** Nine dorsal spines ; lateral line not interrupted ; cheeks and opercles scaly. 



Prseoperciilum not serrated ; scaleslarge; teeth 



in the jaws in a single series 17. Labrichthys, p. 1 12. 



A pair of curved, erect fangs in each jaw ; the 

 other teeth minute, forming a band ; scales 

 of moderate size 18. Labroides, p. 118. 



Praeoperculum serrated 19. Duym.eria, p. 120. 



*** Nine to eleven dorsal spi-)ws ; lateral line interrupted ; cheeks and apercles scaly. 

 Eleven dorsal spines 20. Cirkhilabrus, p. 123. 



The middle of the spinous dorsal is strongly 



depressed 21. Doratonotus, p. 124. 



The third anal spine is the longest ; nine or ten 

 dorsal spines, which are subequal in length ; 

 lower jaw not produced backwards 22. Cheilinus, p. 125. 



The second anal spine is the longest ; nine dor- 

 sal spines 23. PSBUDOCHEILINUS, p. 134. 



The lower jaw much produced backwards 24. Epibulus, p. 134. 



**** Eight or ni'ne dorsal spines ; head entirely naked or with only a few very small 

 scales, either on the cheek or on the operculum. 



Nine dorsal spines ; each jaw with two com- 

 pressed cutting teeth anteriorly 25. Anampses, p. 135. 



Nine dorsal spines ; opercles naked, cheek with 

 a strip of very small scales ; scales of mode- 

 rate size 26. Hemigymnus, p. 138. 



Scales in the thoracic region as large as, or 

 larger than, those on the side of the body : 

 scales rather large 27. Stethojulis, p. 140. 



Nine dorsal spines ; head entirely naked * ; 

 scales of moderate size, those in the thoracic 

 region smaller than those on the side of the 

 body ; lateral line continuous ; anterior teeth 

 conical, not bent backwards and outwards ; a 

 posterior caniae tooth 28. Platyglossus, p. 143. 



Nine dorsal spines ; head entirely naked ; scales 

 of moderate size, those in the thoracic region 

 smaller than those on the side of the body ; 



* Except in H. hortidanus and H. notophti«lmu?. 



i'2 



