Jordan and Evennafin. — Fishes of NortJi America. 2779 



the longe.st about f Icnutli of lioad; adipose dorsal about \ as higli as 

 long, its posterior margin largely free; caudal verj' widely forked, the 

 upper lobe falcate, nearly \ longer than the lower, as long as head; anal 

 short and low; distance from vent to base of ventrals slightly more than 

 \ its distance from origin of anal; pectoral spine very strong, much 

 stronger than dorsal spine, its anterior margin with ser^a^ toward the tij), 

 becoming small tiibercles toward base; inner edge with strong retrorse 

 seri-a', the soft rays longer than spines, reaching f distance to base of 

 ventrals. Color very dark bluish or greenish above; sides with bronze 

 luster; belly silvery; mental barbels white, with black edge; maxillary 

 barbels blackish; fins all Idackish, the caudal nearly uniform; paired fins 

 darkest on inner side; sides with vertical series of mucous pores, con- 

 spicuous in life. This species is not uncommon at Mazatlan, where several 

 si)ecimens were obtained by Dr. Gilbert. Four specimens from Colima 

 are also in the National Museum. It has not been observed at Panama. 

 The original description of this siiecies is brief and not entirely correct. 

 That it was intended to refer to the species here described we have ascer- 

 tained by the examination of Dr. (Jiinther's original types in the British 

 Museum. (Jordan Ar, Gilbert, Bull. U. S. Fish Comm., ii, 1882, 48.) 



191. GALEICHTHYS ASSIMILIS (Giinther). 



D.I. 7; A. 19; P. 1, 10. The height of the body is contained 4| times 

 in the total length (without caudal), the length of head 3^; head much 

 broMiler than high, its greatest Avidth being J of its length. Eyes rather 

 small, situated nearer to the end of snout th<in to that of operculum; 

 the length of snout is % of the width of interorbital space. The median 

 longitudinal fonticulns on the upper side of the head docs not extend to 

 the base of occipital process. Teeth on vomer but slightly separated in 

 the middle, forming a pair of oblong transverse patches Avhich are con- 

 fluent with those on the palatimi bones; the latter are short, club-shaped. 

 The band of intermaxillary teeth is 5 times as broad as long. All the 

 teeth villiform. The maxillary barbels extend nearly to the end of head ; 

 the length of the outer ones of the mandible is \ or | that of the head. 

 Crown of the head granular, the granulations being arranged in radiating 

 streaks. Occipital process broader than long, triangular, with its hinder 

 end concave. The basal bone of the dorsal spine of moderate size, cres- 

 cent-shaped. Dorsal spine of moderate strength, more than \ as long as 

 head, granulated in front and slightly serrated behind; the first soft ray 

 longer than spine and as h igh as body ; adipose fin shorter than dorsal ; caudal 

 deeply forked, with the upper lobe the longer, its length being contained 

 5^ times in the total; pectoral spine serrated along its inner edge and on 

 the extremity of the outer edge; ventral fin shorter than pectoral. Sides 

 of the body silvery; vertical fins grayish; basal half of the inner side of 

 the paired fins black. Guatemala. A fine specimen, 13 inches long. Lake 

 of Yzabal. From the collection of Messrs. Godman and Salviu. (Giinther, 

 Cat., V, 146.) 



Jordan (Proc. Ac. Nat. Sci. Phila. 1883, 281) has the following note on 

 the type of this species: "Area between the eyes smooth, extending 

 backward in the form of a rather narrow triangle, which is moderately 



