ON THE ZOOLOGICAL POSITION OF TEXAS. 31 



tlie front of the nares, and sending a branch part way to the middle 

 line of the occiput. The head is compressed and the front gradually 

 descending. The mouth is nearly horizontal, the end of the maxillary 

 bone marking nearly the anterior border of the pupil of the eye. The 

 orbit is large, entering the length of the head four times, and exceeding 

 a little the space between it and the end of the muzzle. The iuterorbital 

 space is very narrow, and the opercular spine is strong. The head enters 

 the length with the caudal fin 4.75 times, and, including the opercidar 

 spine, is as long as the base of the spinous dorsal. The latter is, in turn, 

 shorter than the base of the soft dorsal. The length of the caudal fin is 

 intermediate between the two. 



The color of the body is vermilion, with rather indistinct small brown 

 dorsal spots. Opposite to these there is a series of similar blue spots on 

 the lateral line, of which those posterior to the anal fin are continued to 

 the inferior surface. The spinous dorsal has a dark-blue border, and a 

 red shade from the base upwards, which is present in the second dorsal 

 also. This fin, unlike the caudal, is not cross-barred. Inferior and lat- 

 eral fins immaculate. Ventral and pectoral fins light blue. There is a 

 dark shade on the operculum, and an indistinct one below the eye. 

 Length, with caudal fin, m. .043; iuterorbital width, m. .0005. 



I took this species in the Trinity Eiver, near Fort Worth. 



Percina cajjrodes carhonaria Girard. From near Dallas (Trinity Eiver) 

 and the Llano, Kimble County. 



Micropterus floridanus Les., Goodc; Giclila jloridana Les., 1822; Hiiro 

 w?'r7namsCuv.,Yal., 1828; Microjiterus nif/ricam Co])e. Numerous speci- 

 mens, i)robably referable to this species, were taken in the Trinity, 

 Llano, Guadalupe, and Medina Elvers. Several of them, however, dif- 

 fer materially from Professor Gill's description* in his comparative 

 diagnoses of this species and the ilf. salmoides. I select, in illustration, 

 an adult specimen which I caught in the Johnson's Fork of the Llano 

 Eiver, in Kimble County. It agrees with the description cited in tlie 

 following points: First, the number of scales TJ or 8, 03; second, those 

 of nape equal; sixth, scales at base of second dorsal forming a low 

 sheath; eighth, mouth large; ninth, maxillary bone extending to line 

 of posterior edge of orbit; tenth, soft dorsal rays I-ll, anals III-IO. 



The characters in which the specimen differs from Professor Gill's 

 description are the following: Third, scales of checks minute, seven- 

 teen in an oblique and nine in a horizontal series; fourth, scales of 



* Proceed. Amer. Ass. Adv. Sci.^ 1873, pp. 56-7L 



