CHAR 83 



Lower jaw two-thirds the length of head in males of 

 10 to 12 inches, less in smaller examples; snout 

 as long as the diameter of eye in males of 6 or 7 



inches I. willughbii 



Lower jaw more than two-thirds the length of head, 

 and snout longer than the diameter of eye in males 



of 7 inches . .2. lonsdalii 



/3. Maxillary extending 



well beyond the eye 



in males of 8 to 1 1 



inches . 3. maxillaris 



b. Interorbital region quite flat ; 



teeth rather strong ; snout 



somewhat produced and 



acutely conical . 4. perisii 



2. Adult males with the snout sub- 



conical, obtuse, and with the lower 

 jaw obtusely pointed anteriorly 

 and a little shorter than the 

 upper 5. mallochi 



3. Adult males with the snout obtuse, 



with the upper profile decurved,and 

 with the lower jaw rounded anteri- 

 orly when seen from below, shorter 

 than and included within the upper. 



a. Maxillary strong, extending 

 to below the posterior edge 

 of the eye in males of 8 

 inches ; eye moderate ; fins 

 large ... 6. killinensis 



b. Maxillary short, not reaching 

 the vertical from the posterior 

 edge of the eye in males of 

 8 inches. 



