Fig. 156 — Capture localities for Tnphoturus mexicanus (solid circles) and T. oculeus 



(open circles). 



and Indian Ocean areas. The exact distribution is open to some question because of taxonomic 



confusion (see Discussion ). 



Discussion 



The name T. microchir Gilbert (1913) is herein synonymized with T. nigrescens (Brauer, 

 1904) as I cannot find any differences that warrant retention of Gilbert's species. I find that all 

 characters overlap completely. 



These two species appear to have been confused primarily because of Fraser-Brunner's 

 illustrations showing the PO^ to be well above the origin of the pectoral fin in T. nigrescens, as 



166 



