24 
U. S. P. R. R. EXP. AND SURVEYS-—ZOOLOGY-GENERAL REPORT. 
more advanced position of the dorsal fin, with reference to the insertion of the ventrals. The 
pectoral fins themselves assume the elongated aspect which they have in P. heros. 
References to the figures. —Plate VIII, fig. 5, represents, size of life, an immature specimen of 
Pomotis speciosus, caught in the Rio Seco, Texas. Pig. 6 is a dorsal scale. Fig. 7, a scale 
from the lateral line. Fig. 8, a scale from the abdominal region. 
List of specimens. 
Catalogue number. 
No. of specimens. 
Sex and age. 
Locality. 
Whence obtained. 
| Original number. 
Nature of speci¬ 
mens. 
Collected by— 
432 
3 
Adult.. 
Brownsville, Texas_ 
Capt. Van Vliet_ 
1 & 2 
Alcoholic_ 
Capt. Van Vliet... 
482 
5 
Young. 
433 
3 
Adult.. 
Near Indianola, Texas.... 
Capt. J. Pope_ 
Capt. Pope_ 
434 
24 
Young . 
Devil’s river, Texas_ 
Major Emory_ 
63 
_do_ 
Dr. Kennerlv_ 
435 
3 
__ do_ 
Cadereita, New Leon_ 
Lieut. Couch_ 
23 
__do_ 
Lieut. Couch__ 
436 
1 
__ do_ 
Rio Medina, Texas_ 
Lieut. Whipple_ 
18 
_do_ 
Dr. Kennerly_ 
437 
12 
-. do. 
Rio Seco, Texas_ 
_do_-. 
_do_ 
_do_ 
478 
1 
Adult. 
New Braunsfels, Texas_ 
Dr. Lindheimer. 
.do. 
Dr. Lindheimer ... 
3. POMOTIS HEROS, B. & G. 
Plate IX, Figs. 13 — 16. 
Spec. Char.— Head, mouth, and eye larger than in P. speciosus ; edge of preopercle inconspicuously serrated ; pectorals 
projecting beyond the tips of ventrals ; anal fin provided occasionally with a black patch, as well as the dorsal. 
Syn .—Pomotis heros, B. & G. Proc. Acad. Nat. Sc. Pliilad. VII, 1854, 25. 
This species, like the preceding one, was first collected by the United States and Mexican 
Boundary Commission, consequently its description and figure will he found annexed to the 
Report on that survey. It is more closely allied to P. incisor than even P. speciosus. It has 
also intimate affinities with P. solis, Cuv. & Val. Hist. nat. des Poiss. VII, 1831, 468. 
References to the figures .—Plate IX, fig. 13, represents the young of Pomotis heros , caught in 
the Rio Blanco, Texas. Fig. 14 is a dorsal scale. Fig. 15, a scale from the lateral line. Fig. 
16, a scale from the abdominal region. 
