692 Bulletin 47, United States National Museum. 



scale, surrounded by bronze shades ; no dark crossbars, except in young; 

 dorsal and anal pale orange, with many small, round, black dots ; lower 

 fins pale. Female similar but paler ; no cross bands ; a faint dark spot 

 behind pectoral ; lower fins bright orange ; caudal nearly plain ; dorsal 

 spotted as in the male, but less profusely. Length 2 to 3 inches. Very 

 common in the clear streams of Sinaloa, especially in Rio Presidio, descend- 

 ing to brackish water. (Named for Amos W. Butler, of Brookville, 

 Indiana, a well-known ornithologist who has collected fishes in Mexico.) 

 Pcecilia buileri, JORDAN, Proc. U. S. Nat. Mus., 1888, 330, Rio Presidio, near Mazatlan. 

 (Type, No. 37158. Coll. Alphonse Forrer.) 



1021. PCECILIA GILLII (Kner & Steindachner). 



Head 4 to 5 in total length; depth a little greater. D. 9; A. 8 or 9; 

 scales 25-8. Eye 3 in head; interorbital width 1 to 1 in head. Dorsal 

 inserted near middle of body, opposite anal in females. Young brown, 

 with faint vertical bands; older individuals with dark edges to the scales; 

 dorsal punctate ; young often with a black spot at base of last anal rays; 

 caudal plain or with black points. Length 2 inches. Rio Chagres. 

 (Kner & Steindachner) ; not seen by us. (Named for Theodore Gill.) 

 Xiphophorus gillii, KNER & STEINDACHNER, Abh. Bayer. Akad. for 1864, 28, 1866, Rio Chagres. 



1022. PCECILIA PATONINA (Poey). 



Female brownish green, with an ocellate spot near the base of caudal 

 on the lower middle part of the fin ; this spot black, surrounded by 

 white or reddish; body with brown spots. Havana. (Poey.) Fins 

 and scales undescribed. (pavoninus, like a peacock.) 



Limia pavonina, POEY, Enumeratio, 142, 1875, Havana. (Coll. Poey.) 



1023. PCECILIA VITTATA, Guichenot. 



(FANGUITO; GUAJICA.) 



Head 4; depth 2. D. 10 or 11; A. 10 or 11; scales 30-10; vertebrae 

 13 -f 16. Eye longer than snout, 3 in head. Origin of dorsal nearer 

 occiput than root of caudal, and, in the female, in advance of that of 

 anal. Dorsal and anal of moderate size; in the male the origin of the 

 anal is much nearer to end of snout than root of caudal and before 

 extremity of pectoral, its longest ray provided with an adipose apical 

 appendage; tail moderately elongate, its least depth being not much less 

 than the length of the head. Two series of black dots along each side of 

 the body ; dorsal and caudal with irregular black spots. Cuba. (Poey.) 

 (vittatusj striped.) 

 Pcecilia vittata, GUICHENOT, in Kamon de la Sagra, Hist. Nat. Cuba, Poiss., 146, pi. 5, fig. 1, 1850, 



Cuba; GUNTHER, Cat.,vr, 339, 1866. 

 Limia cubensis,* POEY, Memorias, i, 388, 1855, Havana. 

 Pcecilla cubensis, GUNTHER, vi, 340, 1866. 



1024. PCECILIA MEXICANA, Steindachner. 



Head 4 ; depth 3| ; eye in adult nearly or quite equal to snout, 3 in 

 head, and half width of interorbital space; larger in young. D. 10; A. 



* According to Poey cubensis has the eye 1% in snout, 3 in head; vittata, eye 1% in Bnout, 3% in 

 head. In later papers he has regarded the two as identical. 



