104 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
76. Agosia oscula (Grd.). “New Mexico” and “ Rio Grande basin” (as Apocope ventricosa Cope, types, 
Cope & Yarrow, 1875, pi. xxvm, figs. 1, In). The occurrence of this species in the Rio 
Grande basin is doubtful. 
77. Agosia yarrowi Jordan & Evermann. Rio Grande, Colorado (as Apocope oscula types, Cope & 
Yarrow, 1875, not Argyreus oscula of Girard). The occurrence of this minnow in the Rio 
Grande basin is also doubtful. 
78. Hybopsis storerianus (Kirtland). Red River at Fulton, Ark. (Jordan & Gilbert, 1886). 
79. Hybopsis aestivalis (Grd.). Rio San Juan near Cadereita, New Leon (as Gobio cestivalis types, 
Girard, 1856; Girard, 1858, pi. lvii, figs. 17-20; and Girard, 1859). Rio Grande at San llde- 
fonso, N. Mex. {Ceratichthys sterletus Cope, types, Cope & Yarrow, 1875, pi. xxvn, figs. 3, 3a). 
Red River at Fulton, Ark., and Rio Colorado at Austin (Jordan & Gilbert, 1886). Rio Grande 
in- New Mexico (as Ceratichthys sterletus, Synopsis). Rio San Juan, Cadereita, New Leon (as 
Ceratichthys cestivalis, Synopsis). The type of C. sterletus (U. S. N. M. No. 16973) is a single 
specimen about 3 inches long and in good condition. Head, 4; depth, 5; eye, 4f ; snout, 24 . 
80. Hybopsis aestivalis marconis J. & G. Rio San Marcos at San Marcos (types) and Rio Comal 
at New Braunfels (Jordan & Gilbert, 1886). San Marcos River at San Marcos and Guadalupe 
River at New Braunfels (Evermann, 1892). Probably identical with H. cestivalis. 
81. Semotilus atromaculatus (Mitch.). Twenty miles west of the Choctaw Agency (as Leucosomus 
incrassatus types, Girard, 1856, and Girard, 1858, pi. lxi, figs. 1-6). Antelope Creek, Arkansas 
(as Leucosomus pallidus types, Girard, 1856, and Girard, 1858, pi. lxi, figs. 6-10). 
82. Stypodon signifer Garman. Parras, Coahuila (type, Garman, 1881)., 
83. Leuciscus nigrescens (Grd.). Rio Mimbres, tributary of Lake Guzman (wot the Gila) (as Gila 
pulchella types, Baird &. Girard, 1854). Chihuahua River and tributaries (as Tigoma pulchra 
types, Girard, 1856, and Girard, 1859, pi. xxxn, figs. 5-8). Rio Mimbres, tributary of Lake 
Guzman, Mexico (as Tigoma pulchella, Girard, 1856, and Girard, 1859, pi. xxxi, figs. 5-8). 
Sangre de Christo Pass, from a tributary of the Rio Grande (as Clinostomus pandora types, 
Cope, 1872). Rio Grande, mouth of the Rio Hondo, and Rio Grande near San Ildefonso, 
N. Mex. (as Gila pandora, Cope & Yarrow, 1875). Chihuahua River (as Squalius pulcher , 
Synopsis). Lake Guzman (as Squalius pulchellus, Synopsis). Rio Grande at Del Norte and 
Alamosa, Colo., and Rio Conejos near Alamosa (as Leuciscus pulcher, Jordan, 1891). Rio de 
Acama, N. Mex. (as Gila gula types, Cope & Yarrow, 1875). Rio Grande at Loma, Colo, (as 
Gila egregia, Cope & Yarrow, 1875). Boca Grande and Janos River (as Tigoma nigrescens types, 
Girard, 1856, and Girard, 1859, pi. xxxii, figs. 1-4). Parras, Coahuila (as Clieonda nigrescens, 
Garman, 1881). An examination of the original description and a study and comparison 
of the types of these various nominal species named above convinces us that the synonymy 
should stand as here given. In the following table we give measurements and other data 
drawn from the material now in the National Museum. 
Nominal species. 
U. S. N. 
M. No. 
Total 
length. 
Head in 
length. 
Depth 
in 
length. 
Eye 
head. 
Snout 
in 
head. 
Dorsal. 
Anal. 
Scales. 
Locality. 
Inches. 
Gila pulchella, types 
233 
6i 
4 
44 
54 
34 
I, 9 
I, 8 
16-67-7 
Rio Mimhres. 
233 
34 
3* 
44 
4J 
4 
I, 9 
I, 8 
16-73-9 
Do. 
Tigoma pulchra, types 
227 
5* 
3f 
34 
41 
34 
I, 8 
I, 8 
Rio Chihuahua. 
227 
44 
3* 
44 
4 
I, 8 
20-70-9 
Do. 
228 
54 
4 
4 
41 
34 
I, 8 
I, 8 
Do. 
228 
5 
4 
4 
41 
34 
I, 8 
I, 8 
17-63-10 
Do. 
228 
34 
3| 
3| 
31 
31 
I, 8 
I 8 
Do. 
Tigoma nigrescens, types. 
219 
3| 
3g 
4 
4 
4 
I, 9 
I, 8 
17-67-8 
Rio Janos. 
220 
5J 
3| 
51 
3 i 
I, 9 
I, 8 
.17-67-8 
Boca Grande. 
220 
3 
3J 
44 
4 
4 
I, 9 
I, 8 
17-68-9 
Do. 
Gila egregia , 
15800 
5| 
4 
41 
44 
34 
I, 8 
I, 8 
16-64-8 
San Ildefonso. 
' 15800 
34 
3k 
3| 
4 
3§ 
I, 8 
1 I, 8 
16-69-8 
Do. 
Gila pandora, types 
15984 
64 
4 
4 4 
34 
I, 8 
17-67-10 
Rio Hondo, N. Mex. 
15984 
4 
4 
41 
34 
17-63-10 
Do. 
15984 
5J 
44 
44 
34 
16-63-10 
Do. 
15984 
44 
4 
4 
4 
34 
I, 8 
j, 8 
16-60-8 
Do. 
41628 
4i 
44 
54 
34 
I, 8.1 
id, 8 
17-65-8 
Rio Grande at Del 
Norte, Colo. 
41628 
54 
4 
4 
5 
34 
I, 8 
I, 8 
17-64-11 
Do. 
