1538 Bulletin 4.7, United States National Museum. 



small blue spots; sometimes a black spot on middle of spiuous dorsal, 

 with another one below it on back; a black blotch at base of caudal. 

 Rivers of southwestern Texas and northeastern Mexico ; chiefly confined 

 to the basin of the Rio Grande; the only species of Cichlidw entering the 

 United States. (xvdveo$, cyaneus, blue; guttatus, spotted.) 



Herichthys cyanoguttatus, BATED & GIRARD, Proc. Ac. Nat. Sci. Phila., vn, 1854, 25, 

 Rio Grande, Brownsville, Texas (Type, No. 851. Coll. John H. Clark); BAIRD & 

 GIRARD, U. S. and Mex. Bound. Surv., Zoo]., 30, pi. 4, figs. 9-12, 1859. 



Heros cyanoguttatus, GUNTHER, Cat. Fishes, iv, 290, 1862 ; JORDAN & GILBERT, Synopsis, 

 608, 1883. 



1945. HEROS PAVONACETJS, Garman. 



Head 2f ; depth 2f. D. XVI, 12; A. V, 8; scales 4-32-12. Head as deep 

 as long; eye large, wider than preorbital, its front behind tip of maxil- 

 lary; 5 rows of scales on cheek; lower lip not described; fifth dorsal 

 spine highest ; soft dorsal and anal reaching candal ; pectorals to vent. 

 Dark brown, flecked with pale ; 4 to 7 ocellated, vertically expanded 

 black spots on side below dorsal fin ; an ocellated black spot on base of 

 tail above lateral line; side with 10 or 12 faint dark cross bands. Mon- 

 clova, Coahuila, Mexico. (Garman). (pavonaceus, like a peacock.) 



Heros pavonaceus, GARMAN, Bull. Mus. Comp. Zool., vm, 93, 1881, Spring near Monclova 

 in Coahuila, Mexico ; JORDAN & GILBERT, Synopsis, 939, 1883. 



1946. HEROS ALTIFRONS, Kner & Steindachiier. 



Head 2 ; depth 2f. D. XVI, 11 ; A. V, 8 or 9. Snout rather high, width 

 of preorbital more than that of orbit. Jaws equal in length. Eye con- 

 siderably nearer to end of operculum than to that of snout. Dorsal spines 

 of moderate length and strength. Lower lip dilated into a lobe on each 

 side, which is broadest behind. Scales on cheek in 4 or 5 series. Body 

 with 4 or 5 dark vertical bands,* each band with a darker blotch; scat- 

 tered pearl-colored dots all over body ; a dark spot on middle of root of 

 caudal fin. Isthmus of Panama and southward. (Kner & Steindachner.) 

 (altm, high; /rows, forehead.) 



Heros altifrons, KNER & STEINDACHNER, Sitzgeber. bayer. Akad., 223, 1863, New Granada; 

 Abhandl. bayer. Akad., x, 11, taf. 2, fig. 1 ; GUNTHER, Fish. Centr. Am., 459, 1869. 



1947. HEROS BEAM, Jordan. 

 (MOJARRA VERDE.) 



Head 3; depth 2\. D. XVI, 11; A. V, 8: scales 41-30-12. Body oblong, 

 compressed, the back moderately elevated ; profile gibbous at nape, de- 

 pressed and concave above eyes, thence straight to tip of snout, which is 

 short and rather sharp; snout 3 in head; eye small, 4 in head, 1 in the 

 slightly concave iiiterorbital space ; lower lip moderate, its fold contin- 

 uous, without frenum ; teeth moderate, maxillary short, 3 in head ; lower 

 jaw slightly projecting; preorbital, 4 in head; 6 rows of scales on cheek; 

 edge of preopercle oblique, straight, entire; gill rakers very short, thick- 



*Kner & Steindachner describe them as " tcenice," instead of "/ascioj." (Giinther.) 



