268 Annals of the Carnegie Museum. 



Habitat: Taihoku (Jordan & Evermann). 



Remarks: This specimen may not be different from the common 

 eel, Anguilla japonica. As I have no specimens to examine, nothing^ 

 more can be said of it at present. 



Family MUGILID.E. 

 Artificial Key to the Formosan Genera of Mugilid^. 



A. An adipose eye-lid well developed, covering at least a third of the iris posteriorly. 



Mugil. 



B. Adipose eye-lid not developed Liza. 



Genus Mugil (Artedi) Linnaeus. 



1758. Mugil (Aptedi) Linn.^us, Syst. Nat., Ed. X, p. 316. (Type Mugil 

 cephalus Linnaeus.) 



Body more or less oblong and compressed, covered with cycloid 

 scales of moderate size; no lateral line. Mouth more or less trans- 

 verse; anterior margin of the mandible sharp, sometimes ciliated. 

 No true teeth in the jaws. Gill-openings wide; gills four. Eyes 

 lateral, with adipose eyelids. Two dorsal fins, the first consisting of 

 four stiff spines; anal slightly longer than the second dorsal; ventrals 

 abdominal, with one spine and five rays. Branchiostegals from four 

 to six; pseudobranchiaj present. 



Distribution: Migratory fishes of all the temperate and tropical 



regions. 



Synopsis of the Formosan Species. 



A. Median dorsal line not carinate. 



a. Mandibular angle obtuse; cleft of mouth contained two times in the dis- 

 tance between the angles of mouth cephalus. 



aa. Mandibular angle a right angle; cleft of mouth contained less than two 

 times in the distance between the angles of mouth oeur. 



B. Median dorsal line carinate m front and back of the spinous dorsal. 



a. Mandibulary angle obtuse; cleft of mouth contained less than two times in 

 the distance between the angles of mouth carinalus. 



53. Mugil cephalus Linnaeus. 

 Bora (Japan); Oahii (Formosa). 



1758. Mugil cephalus Linn.^us, Syst. Nat., Ed. X, p. 316; Europe. — Cuv. & 

 Val., Hist. Nat. Poiss., XI, 1830, p. 307. — Gunther, Cat. Fish., Ill, 1861, 

 p. 417; Mediterranean; Coast of Madeira; Nile; fresh-water lakes of Tunis; 

 West coast of Africa. — Jordan & Starkes, Proc. U. S. Nat. Mus., XXXI, 

 1906, p. 516; Port Arthur. — Jordan & Seale, Proc. U. S. Nat. Mus., 

 XXIX, 1906, p. 521; Hongkong; Shanghai. — Jordan & Richardson, 



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