124 OSTARIOPHYSI. 
sides; dorsal shield small, subcrescentic. Width of mouth } the width of head ; premaxillary band of 
teeth 5 times as long as broad; vomerine patches of teeth rounded or quadrangular, separate or 
subcontinuous, continuous with the larger rounded or elliptical palatine patches. Maxillary barbel 
extending to basal part of pectoral. 4 gill-rakers on the lower part of the anterior arch. Dorsal 17; 
spine nearly 2 the length of head, adipose fin longer than the dorsal. Anal 21-22. Pectoral spine 3 
to = the length of head, weakly serrated. 
Hab. Panama 1224 (Jordan). 
Here described from two specimens, 270 and 280 mm. in total length. 
10. Galeichthys guentheri, sp.n. (Tab. XVI. fig. 1 and Tab. XIX. fig. 3.) 
Arius milberti (non Cuv. & Val.), Giinth. Cat. Fish. v. p. 155 (1864) - | 
Depth of body 54 in the length, length of head 33 to 33. Breadth of head 14 in its length, diameter of eye 
6 to 64. Fontanel produced into a groove which nearly or quite reaches the parieto-occipital ; occipital 
process keeled, much broader than long, subtriangular, with rounded apex; dorsal shield small, 
subcrescentic. Width of mouth 2 to 2 the width of head; premaxillary band of teeth 43 times as long 
as broad; vomerine patches of teeth very small, well separated, separate from or continuous with the 
oval palatine patches.. Maxillary barbel extending to operculum. 9 or 10 gill-rakers on the lower part 
of the anterior arch. Dorsal I'7; spine 2 the length of head; adipose fin shorter than the dorsal. 
Anal 17-18. Pectoral spine 2 to § the length of head, weakly serrated. 
Hab. Gur or Mexico (Haslar Coll.) '. 
Two specimens, 240 and 260 mm. in total length. 
Galeichthys felis, Linn. (Arius milberti, Cuv. & Val., Arius equestris, Girard), which 
is known to range from Cape Cod to Texas, is closely allied to G. guentheri, but differs 
in several respects, notably in having the occipital process as long as broad and in the 
longer barbels. I have examined a specimen from New Orleans. 
11. Galeichthys seemani. 
Arius seemani,; Giinth. Cat. Fish. v. p. 147 (1864) °. 
Galeichthys seemanni, Jord. & Everm. Bull. U.S. Nat. Mus. xlvii, 1900, p. 2772°. 
Galeichthys jordani (Eigenm. & Eigenm.), Jord. & Everm. t. c. p. 2774°; Gilb. & Starks, Mem. 
Calif. Ac. Sci. iv. 1904, p. 22%. 
Galeichthys gilberti (Jord. & Williams), Jord. & Everm. t. c. p. 2773, fig. 54°. 
Galeichthys eigenmanni, Gilb. & Starks, t. c. p. 21, t. 4. fig. 8°. 
Depth of body 5-54 in the length, length of head 33 to 4. Breadth of head 17 to 13 in its length, diameter 
of eye 53 to 73. Fontanel produced into a groove which nearly or quite reaches the parieto-occipital ; 
occipital process keeled, much broader than long, subtriangular, the apex truncated, the sides straight ; 
dorsal shield small, subcrescentic. Width of mouth 3.to 3 the width of head; premaxillary band of 
teeth 5 to 6 times as long as broad; vomerine patches of teeth quadrangular, rounded or ovate, separate 
or subcontinuous, subcontinuous or continuous with the larger oval or club-shaped palatine patches. 
Maxillary barbel extending to opercle or base of pectoral. 10 to 12 gill-rakers on the lower part of the 
anterior arch, Dorsal I 7; spine 2 to the length of head; adipose fin shorter than the dorsal. 
Anal 16-20. Pectoral spine weakly or moderately serrated, 2 to $ the length of head. 
3 
Hab. Pacific Coast from Mexico to Ecuador : 
Mazatlan (Jordan) °®; Panama (Jordan) 224°; Ecuador (Festa). 
