THE SHORE FISHES. 259 



lip, with ;i single row of teeth which are short, compressed and either I'ouiidetl or 

 slightly notched and slightly constricted at the base; lower lip with an outer 

 fringe of fine sinijile cilia and some very much hner, scattered ciliae on its upper 

 surface; man>- lows of small, sharp, curved teeth on vomer and jialatines. 



Chaenomugil of (!ill is based on Mugil proboscideus Giinther. The generic 

 characters according to Gill, Proc. Acad. Nat. Sci., Phila., 1863, p. 169, are: ''the 

 longitudinal cleft of the mouth, the narrow and pointed lower jaw and the thick 

 and angular upper lip"; the last of which is the only one in this description 

 which actually separates it from Myxus. 



In Fishes of the Hawaiian Islands, .loidan t^- Evermann give as generic 

 characters of Chaenomugil, "Cleft of mouth lateral; lower jaw narrow; denti- 

 form cilia in very many series, broad fiat and somewhat paved ; upper lip very 

 thick; no adipose eyehd." 



Species of Chaenomugil proboscideus in the U. S. National Museum col- 

 lected at Mazatlan by Dr. Jortlan, and probably identified by him, agree in the 

 above characters and differ from Myxus elongatus in having no vomerine or 

 palatine teeth; they also agree with the specific requirements of C. proboscideus 

 as given l)y Giinther. 



In Fishes of Hawaiian Islands, .lordaii it Evermann describe and figure a 

 species which they identify as Chaenomugil chapiali and include in its synonymy 

 Myxus {Neomyxus) sclateri Steindachni'r. They give another sjjecies which 

 they identify as Myxus pacificus Steindachfier, but in the synonymy of the 

 genus Myxus they give Neomyxus Steindachner, based on A", sclateri. 



Specimens in the U. S. Bureau of Fisheries reserve series, and U. S. National 

 Museum labeled Chaenomugil chapiali from the Hawaiian Islands, being the 

 specimens upon which Jordan & Evermann based their descriptions, agree 

 neither with the generic requirements of Chaenomugil nor Myxus but agree 

 perfectly with Steindachner's description of Myxus (Neomyxus sclateri) in which 

 the rather slcMider labial ciliaform, pectinate, movable teeth are in two rows in 

 each liji with sometimes a portion of a thii-d row indicated. The character of 

 these teeth, so widely different from those of Myxus, and the difference in the 

 number of rows from those of Chaenomugil were indicated by Steindachner as 

 sufficient basis for a new subgenus. We believe it, however, to be of generic 

 value and that Neomyxus is a good genus. 



