122 Jordan cr^ Evermanii. — Fishes of Nortli America. 



69. GALEICHTHYS,* Cuvier St, Valenciennes. 



163. GALEICHTHYS LENTIGINOSUS (Eigenmann & Eigeninann). 



Gill rakers 3 + 4. Color light browu, paler below, the sides freckled; 

 head 4 to 4|^. A. 22. Panama. (Eigenmann.) (/(n^Jf/i/iosMs, freckled.) 



Ttwhlmmf. UiilUfmosm, Eioenmann, Proc. Cal. Ac. Sci., 1S88, 139, Panama. 



164. GALEICHTHYS PERUVIANUS, (Liitkon). 



Gill rakers 3 + 10. Back and sides blue black ; a conspicuous broad 

 pale band along the lateral line. Head 3^. A. 14 to 16. Pacific Coast of 

 Mexico to Peru, rather rare; this and the preceding species well marked 

 by the skin-covered head, similar to that of species of Fdichthys. 



OuleUMIijis penivianus, Li'TKEN, Vidensk. Med., 204, 1874, Callao. 

 Tachmirus pernvianns, Eigenmann, S. A. Nematognathi, 51, 1890. 



70. SCIADEICHTHYS, Bleeker. 

 165. SCIADEICHTHYS TROSCHELI, (Gill). 

 (Baore Colorado.) 

 Body robust; dorsal plate longer than wide, its surface granular; gran- 

 ulations of head extending to above eye; occipital process short, emar- 

 ginate behind ; fontanelle large, ending acutely at a point nearer base of 

 dorsal than tip of snout ; upper caudal lobe 5 in length. Head 3, to 3J. 

 A. 18. No axillary pore. Female as in some other species, with the head 

 smoother and covered with thicker skin, as in the subgenus Galeichthijs. 

 Dark brown, with a brassy luster. Mazatlan to Panama, not rare ; one of 

 the largest species, used as food. (Named for Dr. Franz Hermann 

 Troschel.) 



Seiades troscheU, Gihh, Proc. Ac. Nat. Sci. Phila., 18G3, 171, Panama. 

 Arins hrmidii, Steindachner, lehtli. Beitr., iv, 21, 1876, Altata; Panama. 

 Tachisunis brandti, EiGENMANN, S. A. Nematognathi, 55, 1890. 



166. SCIADEICHTHYS EMPHYSETUS, (Miiller & Troschel). 

 Closely allied to S. troscheU, of which it is the Eastern representative. 

 Palatine bands of teeth with a backward projecting angle; teeth villi- 

 form ; posterior nostrils not connected by membrane. Eye moderate, 5 

 in the interocular space, 11 in head. Maxillary barbels flattened, reach- 

 ing middle or end of dorsal fin. Dorsal plate pointed in front, entering 

 the notched occipital process ; as wide as long, its surface pitted. Granu- 

 lations of the head extending to above middle of cheeks. An elongate 

 patch of teeth behind each palatine patch. Caudal deeply forked, the 

 upper lobe 3f in the length. Head 3|. Depth 6. D. 17 ; A. 18. Yellowish 

 brown, paler below. Surinam. (Eigenmann.) {'mipvaau, to inflate.) 



Eagrus {Seiades) oiiphyselHs, Mf ller & Troschel, Iloriv Ichthyol., in, 8, 1849, Surinam. 



Arius emphtjselus, GiiNTiiER, Cat.,v, 150, 18G4. 



Tocfciswj-MS emp%sefHs,EiGENMANN, S. A. Nematognathi, 5.'?, 1890. 



167. SCIADEICHTHYS TEMMINCKIANL'S, (Cuvier & Valenciennes). 

 Palatine bands of teeth with a backward projecting angle on the inner 

 margin; teeth on palate villiforni or nearly so. Dorsal plate pointed in 



* For the characters of this and other genera related to Tachymrus see the analysis above. 



