1912.] 



NATURAL SCIENCES OF PHILADELPHIA. 



25 



Length 2 If inches. 



Type No. 38,163, A. N. S. P. St. Martins, West Indies. Dr. 

 R. E. Van Rijgersma. 



Only the single example described above. It differs from the 

 other West Indian species in its dentition, slender forceps-like jaws 

 and coloration. 



(h'dpzr;o? } forceps; yvadosj jaw.) 

 Gymno thorax pictus (Ahl). 



One from the Hawaiian Islands. This shows the posterior nostrils 

 with a small or low cutaneous fringe, which in combination with the 

 molar-like teeth likely allow it to enter Sidera Kaup as a valid 

 subgenus. 



AHYNNODONTOPHIS subgen. nov. 



Type Gymnothorax stigmanotus sp. nov. 



No vomerine teeth. Other teeth entirely uniserial, except three 

 on premaxillary region of upper jaw. 



This group differs from all the other subgenera included under 

 Gymnothorax chiefly in the absence of, or in having deciduous, 

 vomerine teeth. 



(J, without; owi<s } vomer; ddous, tooth; o<pi?, snake; with reference 

 to the absence of vomerine teeth.) 



(SSSBSeSwBSBi 



.^$^> 







Fig 0. — Gymnothorax stigmanotus Fowler. Type. 



