246 



Annals of the Carnegie Museum. 



Habitat: Bred in ponds throughout the island. 



Remarks: The present species is one of the important food-fishes, 

 though it is not a native of the island. In the spring, young of H. 

 molitrix are imported from Southern China and are bred artificially 

 like other Chinese fishes. 



Measurements of Hypophthalmichthys molitrix. 



Aristichthys gen. nov. 

 Type Leiiciscus nohilis (Gray) Richardson. 



Body stout, compressed, rather high in front; abdomen rounded, 

 with a keel only in the postventral part. Head Jarge; snout rather 

 short, obtusely rounded. Mouth oblique, anterior, its angle reaching 

 below the center of eye; lips thin; barbel none. Eye inferior and much 

 anterior. Gill-rakers separated, slender and long, set very closely, 

 with many membranous septa. Dorsal fin short, inserted behind the 

 origin of ventral; anal fin triangular, entirely behind the dorsal. 

 Gill-membranes united, forming a broad bridge across the isthmus. 

 Scales small, about 115 in the lateral line. Pharyngeal teeth in one 

 series, 4-4, strongly compressed laterally. Lateral line strongly 

 decurved anteriorly, running along the middle of the tail. 



Distribution: Formosa; South China. 



Remarks: The present genus is a near relative of Ilypophthalniichthys. 

 It differs distinctly from the latter in having clearly separated gill- 

 rakers, large head, and rounded abdomen, which has no keel in front 

 of the ventral. 



42. Aristichthys nobilis (Richardson). 



Chikuyoren (Formosa). 



1844. Leuciscus nohilis (Gray) Rich.^rdson, Ichthyol. \'oy. Sulph., p. 140, PL 63, 

 Fig. 3; Canton, China. 



1866. Cephalus Jiypophlhalmus Steindachner, Verb. Zool.-Bot. Gesell. Wien, p. 

 383; Hongkong. 



1867. H y po phthalmichlhys manchiiricus Kner, Novara Fisch, III, p. 350; Shang- 

 hai. 



1868. HypoplUhahnichthys nohilis GtJNTHER, Cat. Fish., VII, p. 299; Amoy. — 



