644 Bulletin 47, United States National Museum. 



Fundulus bermudse, GiiNTHEB, Ann. Mag. Nat. Hist., 1874, 4, reprint, Bermudas. 

 Fundulas rhizophorse,* GOODE, Amer. Journ. Sci. Arts, 1877, 298, Basden Pond, Bermudas, 

 in brackish water among the roots of the mangrove (Ithizophora mangle); locally abundant. 



936. FUNDULUS BOBUSTUS, Bean. 



Head 3i ; depth 3 ; eye 4i to 5. B. 5 ; D. 14 ; A. 16 ; V. 6 ; P. 16 ; scales 

 38-16. Head broad, the distance between eyes equal to length of eye 

 and snout. Top of head nearly flat ; eye as long as snout. Mouth very 

 obliquely placed, the lower jaw longer than upper. End of maxillary 

 reaching to below front of eye ; width of mouth J- head. Teeth in jaws 

 in narrow bands or biserial, the outer series somewhat enlarged. Gill 

 rakers short, stout, about 19 on the first arch. Thirteen scales between 

 upper angle of gill opening and origin of dorsal ; dorsal commencing 

 nearly midway between tip of snout and end of tail. Ventral origin 

 midway between tip of snout and base of caudal; anal origin under 

 middle of dorsal ; in the female the first six rays are short and stiff, and 

 the genital opening is immediately in front of, and disconnected from, 

 the anal fin ; in the male the middle caudal rays are i as long as head ; 

 slightly shorter in the female. Color uniform pale brown ; fins unspot- 

 ted, and the opercle with a golden tint. Length 5 inches. Streams of 

 Guanajuato, (robustus, robust.) 



Fundulus robustm, BEAN, Proc. U. S. Nat. Mus., 1892, 285, pi. 44, fig. 2, Guanajuato, Mexico. 

 (Type, No, 43760. Coll. Duges.) 



937. FUNDULUS LABIALIS, Giinther. 



Head 4 to 4i; depth 4i; eye about 4. B. 6; D. 13 or 14; A. 16 or 17; 

 V. 6; scales 37 to 39-15. Interorbital space broad, slightly convex, 

 its width being less than half head. Snout broad, obtuse, depressed, 

 with the jaws equal in front; mandible very short, not longer than 

 eye; upper lip well developed, broad, extending to angle of mouth. 

 Eye less than length of snout, and in females \ of the width of the 

 interorbital space, whilst in males the forehead is somewhat narrower. 

 Origin of dorsal midway between extremity of caudal and orbit, over 

 twentieth scale of lateral line ; first anal ray opposite first of dorsal ; 

 dorsal fin as high as long in both sexes; anal fin rounded in the male, 

 scarcely higher than long, much elevated in the female, the length of its 

 base being only of its depth. Genital opening of the female immedi- 

 ately in front of, but disconnected from, the anal fin. Basal third of the 

 caudal fin (which is subtruncate) scaly. Body uniform brownish olive, 

 paler below; sometimes irregular, cloudy markings on the tail; fins 

 immaculate; the anal fin of the male black at the base and bright 

 yellow on its marginal half; upper margin of the dorsal fin of the same 

 sex yellowish. Length 4 inches. Rivers of Guatemala. (Giinther.) 

 (labialis, pertaining to the lip.) 



Fundulus Idbialis, GUNTHER, Cat., vi, 319, 1866, Rio San Geronimo, Guatemala, Yzabal. 

 (Coll. Salvin & Godman.) 



* Dr. Goode's description of Fundulus rhizophorse is more detailed than that of Dr. Giinther. 

 The only important difference shown is in the fin rays. Goode counts, D. 12; A. 11; scales 35-12 

 or 13. Color light tawny yellow, with about 15 regular tranverse bands of greenish brown, each 

 2 scales in width, most distinct posteriorly. Length 2% inches. 



