3154: Bulletin 4.7, United States National Museum. 



ventral outline at base of ventrals. Head pointed, interorbital space 

 wide and flat; eye large, nearer tip of snout than to posterior edge of 

 opercle by a distance equal to diameter of pupil; mouth very oblique, 

 its width equal to 2 times diameter of pupil; premaxillaries protractile; 

 distal end of maxillary visible; lower jaw projecting; teeth in two 

 series on each jaw, the outer series in a single row, small, pointed, 

 loosely attached; second series scarcely discernible, in bauds: gill-open- 

 ings extending above base of pectoral a distance equal to diameter 

 of orbit; gill-rakers on first arch 20, small and slender; alimentary 

 canal very long and slender. Body and entire head, except preorbital 

 area, lips, and lower jaw, covered with large scales; 3 rows of scales 

 on base of caudal; small scales extending on inter-radial membranes of 

 caudal, a distance beyond the basal scales about equal to diameter of 

 the eye. Dorsal fin inserted halfway between base of caudal and ante- 

 rior edge of pupil, its base contained 6| times in length of head and body, 

 its height 5f, the last rays a little higher than the first; anal advanced 

 close to base of ventrals, the first and second rays short, closely attached 

 to the next, third ray greatly enlarged and lengthened, a loosely attached 

 ovate, fleshy pad near its tip ; fourth and fifth rays slender, as long as 

 third; tips of third and fifth rays bent toward that of the fourth; sixth 

 to eighth rays about \ as long as third; caudal rounded, its length con- 

 tained 3i times in head and body; pectoral rounded, the length con- 

 tained 1 times in head; ventrals pointed, extending to middle of longest 

 anal ray. Color in alcohol, light yellowish olive, much lighter on breast 

 and ventral part of head; posterior edges of scales dark; lower jaw, pre- 

 orbital area, upper part of head, and a narrow, median dorsal stripe, 

 dark; basal f of dorsal fin black, distal part of fin white, the boundary 

 between the white and black more definite on the anterior than on pos- 

 terior part of fin ; basal f of caudal dusky, distal part without color. 



Other male examples have only a few small dark spots on dorsal and 

 caudal. The females have the body more elongate than the males, the 

 depth of the caudal peduncle 5f in length. The dorsal fin is inserted in 

 advance of the anal, its origin above anal opening, the first rays highest. 

 The ventrals extend to the posterior edge of the vent, but do not reach 

 the anal. The dorsal and caudal have a little dusky coloring. 



Lack of material for comparison prevents our commenting on the prob- 

 able affinities between this and other species of the genus. (Jordan & 

 Snyder.) 



Known only from Rio Tamesoe, near Tampico, Tamaulipas, Mexico, 

 where several specimens were collected January 12, 1899, by Mr. Snyder. 

 (Type, a female, No. 6165, L. S. Jr. Univ. Mus.) 



(Named for Jose Limantour, the accomplished minister of the "Haci- 

 enda" in Mexico.) 



Poecilia limantouri, JORDAN <fc SNYDER, Bull. U. S. Fish Com. 1899 (1900), 129, RioTamesoe, 

 near Tampico, Mexico. 



Page 702. Before Xiphophorus gu-ntheri, Jordan & Evermann, insert: 



1043 (a). XIPHOPHORUS MOXTEZU3LE, Jordan & Snyder. , 

 Head 4^; depth 3; depth of caudal peduncle 4J-; eye 3 in head; snout 

 3^; interorbital space 2; height of dorsal 3 in length; anal 5; length of 



