Figure 90.— External features of 



other representative monacanthid 



genera: Pervagor melanocephalus- 



upper left, nasal region as seen 



externally (far left) and the 



olfactory lamella as seen with the 



top of the nasal sac removed; 



middle left, scales from upper 



middle region of body, including 



three lateral line canal bearing 



scales; lower left, ventral view of 



encasing scales at end of pelvis 



(anterior to left). 



Figure 91. — External features of other 

 representative monacanthid genera: 

 Rudarius ercodes — upper left, nasal 

 region as seen externally (olfactory 

 lamella, if present, indistinct in 

 specimen examined); middle left, scales 



from upper middle region of body, 



including two lateral line canal bearing 



scales; lower left, ventral view of 



encasing scales at end of pelvis 



(anterior to left). 



Figure 92.— External features of other 



representative monacanthid genera: 



Navodon hypocrepis — upper left, nasal 



region as seen externally (far left) and 



the olfactory lamellae as seen with the 



top of the nasal sac removed; middle left, 



scales from upper middle region of body, 



including a lateral line canal bearing 



scale; lower left, ventral view of 



encaging scales at end of pelvis 



(anterior to left). 



150 



