ETHEOSTOMATn).E. — LXXXIX 219 



U. Lateral line curved upward over the pectorals. 

 n. Jaws about equal ; body elongated. . Boleichthys, 16. 

 kk. Lateral line incomplete ; anal spine feeble. (See Addenda, 



p. 405.) Vaellantia. 



Kkk. No lateral line ; dorsal fins small, subequal, well separated ; 

 mouth small, wiUi nearly equal jaws; scales large; size 

 smallest of all spiny-rayed fishes. . Micbopebca, 17. 



/. AMMOCRYPTA, Jordan. Sand-divbes. 



1. A. beanii, Jordan. Bean's Daetbb. Body very 

 slender; general form and appearance of Plewolepis; 

 dorsal fins very high; color translucent, with a golden 

 lateral band; dorsal fin with large black spots; D. X — 

 10; A. I, 9; lat. 1. 65. Lower Mississippi; a remarkable 

 species. 



2. PLEUROLEPIS, Agassiz. Pellucid Daetees. 



1. P. pellucidus, (Baird.) Ag. Saistd Daetee. Depth 6 

 to 8 in length; body nearly cylindrical; head elongated, 

 pointed; scales small, finely dotted, far apart, and deeply 

 imbedded; fins small; color pinkish white, pellucid in 

 life, with a series of small, squarish, olive (blue) blotches 

 along back, and another along sides, the spots connected 

 by a gilt line; D. X— 9; A. I, 6; length 3 to 3 inches. 

 Ohio Valley, in sandy streams; one of the most interest- 

 ing of our fishes. 



3. PERCINA, Haldeman. Log Peeches. 

 —Pileoma, DeKay. 

 1. P. caprodes, (Raf.) Girard. Log Peech. Hog Fish. 

 Rock Fish. Salmon yellow or greenish, with about 

 fifteen transverse dark bands from back to belly, these 

 usually alternating with shorter and fainter ones reach- 

 ing about to lateral line; a black spot at base of caudal; 

 belly with a row of enlarged plates, shed at some 



