SOUTH AMERICAN NEMATOGNATHI. 385 



prominent, approximated on the 20th scute; breast and 

 belly with numerous small plates, almost wholly naked 

 in specimens .10 m. to base of caudal. 



Distance of caudal fin from tip of snout 3 in the 

 length. Caudal fin injured. Anal fin as high as the 

 ventrals; outer ventral ray greatly thickened and pro- 

 longed, reaching beyond origin of anal fin. Pectorals 

 higher than the ventrals, reaching beyond base of the 

 latter. 



Coloration uniform in adult (?); all the fins dusky; 

 young with five dark cross-bars which are most promi- 

 nent on the sides; fins all more or less spotted; upper 

 lip and barbel dotted. 



328. Loricaria macromystax, 



Loricaria macromystax Giinther, Proc. Zool. Soc.Lond. 1869, 426 r 

 fig. 5-6 (Upper Amazon); Eigenm. & Eigenm. Proc. Cal. Acad. 

 2d Ser. ii, 37, 1889. 



Habitat: Upper Amazon. 



329. Loricaria vetula. 



Loricaria vetula Valenciennes, Voy. d'Orbigny, ix, Atlas ii, pi. vi, 

 fig. 2, 1847; Cuv. & Val. xv, 466, 1840 (Buenos Ayres); Giinther, 

 v, 256, 1864 (copied); Eigenm. & Eigenm. 1. c. 



Habitat: Buenos Ayres. 



330. Loricaria lamina. 



Loricaria lamina Giinther, Proc. Zool. Soc. Lond. 1868, 239, figs. 



6 and 7 (Xeberos); Eigenm. & Eigenm. 1. c. 

 Habitat: Upper Amazon. 



331. Loricaria platystoma. 



Loricaria platystoma Giinther, Proc. Zool. Soc. Lond. 1868, 236, 



237, and 238, fig. 4 and 5 (Surinam); Eigenm. & Eigenm. 1. c. 

 Habitat: Surinam. 



LXIV. HARTTIA. 



Harttia Steindachner, Siisswasserfische siidostl. Bras. 

 iii, 110, 1876 (loricariformis) . 



Type: Harttia loricariformis Steindachner. 

 Body short, broad, greatly depressed; adipose fin none; 

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