GALEICHTHYS. 121 
teeth about 6 times as long as broad; teeth on the palate villiform, in the adult forming a continuous 
band, the rather narrow vomerine strip connecting the large subtriangular palato-pterygoid patches. 
Maxillary barbel about reaching the base of pectoral. 10 gill-rakers on the lower part of the anterior 
arch. Dorsal I 7; spine about 3 the length of head; adipose fin about as long as the dorsal. Anal 
17-18. Pectoral spine about 2 the length of head, with tuberculated or weakly serrated edges. 
Hab. Pacific Coast of Mexico and Central America, from Mazatlan to Panama: 
Mazatlan * and Altata* in Sinaloa; Panama! 34, 
Here described from two specimens from Mazatlan and Panama (Jordan), 260 and 
420 mm. in total length. 
3. Galeichthys planiceps. 
Arius planiceps, Steind. Sitzungsb. Ak. Wien, lxxii. 1876, p. 576, t. 41. 
Netuma planiceps, Jord. & Everm. Bull. U.S. Nat. Mus, xlvii. 1900, p. 2766; Guilb. & Starks, Mem. 
Calif. Ac. Sci. iv. 1904, p. 27°. 
Netuma oscula (Jord. & Gilb.), Jord. & Everm. t. c. p. 2768‘; Gilb. & Starks, t. c. p. 28°. 
Depth of body about 5 in the length, length of head 33 to 41. Breadth of head 11 to 12 in the length, 
diameter of eye 63 to 8. Fontanel produced backwards into a feeble groove, which does not extend to 
the parieto-occipital ; occipital process with a keel, longer than broad, truncated posteriorly, and with 
the sides straight; dorsal shield small, subcrescentic. Width of mouth 4 the width of head; pre- 
maxillary band of teeth 3? to 44 times as long as broad; teeth on the palate villiform, the vomerine 
patches continuous or subcontinuous with each other and with the large subtriangular palato-pterygoid 
patches. Maxillary barbel nearly reaching the base of pectoral. 9 or 10 gill-rakers on the lower part 
of the anterior arch. Dorsal I 7; spine § to # the length of head ; adipose fin a little longer than the 
dorsal. Anal 18-19. Pectoral spine 2 to $ the length of head, with tuberculated or weakly serrated 
edges. 
Hab. Pacific Coast of Mexico and Central America : 
Altata in Sinaloa!; Panama! 2245, 
Here described from four specimens from Panama (Jordan), 220 to 280 mm. in total 
length. 
4, Galeichthys kessleri. 
Arius kessleri, Steind. Sitzungsb. Ak. Wien, lxxii. 1876, p. 574, t. 5°. 
Netuma kessleri, Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1900, p. 27652; Gilb. & Starks, Mem. 
Calif. Ac. Sci. iv. 1904, p. 26°. 
Netuma elattura (Jord. & Gilb.), Jord. & Everm. t. c. p. 2769*. 
Depth of body 54 in the length, length of head 32. Breadth of head 11 in its length, diameter of eye 73. 
Fontanel produced backwards into a feeble groove, which does not reach the parieto-occipital ; occipital 
process with a keel, rather broader than long, subtriangular, posteriorly rounded, and with the sides 
slightly concave; dorsal shield small, subcrescentic. Width of mouth nearly 3 the width of head ; 
premaxillary band of teeth 6 times as long as broad; vomerine, palatine, and pterygoid patches of teeth 
present, separate or subcontinuous. Maxillary barbel reaching basal part of pectoral. 8 gill-rakers on 
the lower part of the anterior arch. Dorsal I 7; spine 2 the length of head ; adipose fin a little longer 
than the dorsal. Anal 19. Pectoral spine 2 the length of head, weakly serrated. 
BIOL. CENTR.-AMER., Pisces, July 1907. R 
