BLUE-BREASTED DARTER. 977 
Description.— Body moderately elongate, deep, and compressed; head long and rather 
pointed; mouth pretty large ; jaws equal; dorsal fin elevated, the longest rays reaching 
caudal; olive-green, sides with rather large spots of brilliant carmine; vertical fins 
more or less barred with red aud white; head 4; depth 4%; D. XII, 13; A. II, 8; Lat, 
1,60. Length 24 inches. 
Habitat. Thus far only known from Mahoning River, Ohio, whence specimens were 
sent long ago by Dr. Kirtland to the U.S National Museum. ‘‘It excels in beauty the 
speckled trout.”—KIrTLAND. 
GENUS 80. ETHEOSTOMA. Rafinesque. 
Htheostoma, RAFINESQUE, Journal de Phys., 1819, 419.—JorDAN, Proc. Acad. Nat. Sci. 
Phila., 1877, 57. 
Catonotus, AGAssiz, Amer. Journ. Sci. Aris, 1854, 305. 
Type, Htheostoma flabellaris, RAFINESQUE. 
Etymology, * etheo, to strain; stoma, mouth. 
Body elongate, compressed; mouth terminal, more or less oblique; upper jaw not 
protractile; vomerine teeth present, teeth in the jaws strong, the outer series canine- 
like; opercular spine well developed; gill-membranes broadly united; scales rather 
large; lateral line incomplete; an enlarged, black humeral scale; first dorsal fin low, 
considerably lower than the second dorsal, of seven 10 nine subequal spines, which, 
in the males, end in little fleshy knobs; anal fin smaller than the second dorsal, with 
two spines, the first of which is always the larger; vertebra (L. lineolatum) 14 plus 21; 
size small; coloration dark; the species are extremely quick in their movements, and 
their coloration, although not gaudy as in Pecilichihys, is very elegant. 
149. HrHkosTOMA FLABELLARE Rafinesque. 
Kiheostoma flabellaris, RAFINESQUE, Journ. de Phys., 1819, 419.—JorRDAN, Man. Vert., 2d. 
Ed., 1878, 227, and elsewhere. 
eran flabellata, RAFINESQUE, Ich. Oh., 1820, 36, 
Catonotus flabellatus, PUTNAM, Bull. Mus. Comp. Zool., i, 1863, 3. 
Pecilichthys flabellatus, Cope, Proc. Amer. Philos. Soc., 1870, 263, 450. 
Etheostoma fontinalis, RAFINESQUE, Ich. Oh., 86. 
Etheostoma linsleyi, H. R. STORER, Proc. Bost. Soc. Nat. Hist. 
Oligocephalus humeralis, GIRARD, Proc. Acad. Nat. Sci. Phila., 1859, 66. 
Catonotus fasciatus, GIRARD, Proc. Acad. Nat. Sci. Phila., 1859, 67. 
Catonotus kennicotti, PUTNAM, Bull. Mus. Comp. Zool.,, i, 1863, 3. 
Description.— Body elongate, compressed, the back scarcely arched; head long and 
rather pointed, entirely destitute of scales; mouth rather large, terminal, oblique, the 
lower jaw notably the longer; eye moderate, longer than the snout, about 4 in head; 
opercular spine strong; fins ail low, the first dorsal in the males about half as high as 
the second, higher in the females; caudal large, rounded; anal spines longer in females 
*The word Hiheostoma is stated by Ratinesque to mean ‘‘ various mouths,” the species 
known to him, i. ¢., Percina caprodes, Diplesium blennioides, and Htheostoma flabellare— 
being so different in respect to the form of the mouth, that he conceived that they 
might belong to different subgenera. 
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