302 REPORT OF NEW JERSEY STATE MUSEUM. 
in a cavity of some small stream, preferably just below a little 
rapid, where they behave somewhat like Rhinichthys atronasus 
and swim against the current. Unlike that fish they dart away 
at the approach of danger seldom to return. Frequently in such 
instances they seek the seclusion of a rock or small stone, quickly 
concealing themselves in crevices. When in the water their colors 
harmonize so well with their surroundings that it is difficult to 
distinguish them from the bottom of the stream. Their move- 
ments when darting are very sudden or swift, though they usually 
do not swim far. They will thrive in aquaria and make a mest 
interesting addition. I have never seen one take a small minnow 
hook properly baited. They appear equally abundant in sandy 
woodland waters as in those in meadows. 
Boleosoma olmstedi Abbott, Geol. N. J., 1868, p. 808.—Jordan, 
An. N. Y. Acad. Sci., I, 1879, p. 95.—Abbott, Nat. Rambles, 
1885, p. 477.—Bean, Bull. U. S. F. Com., VII, 1887, p. 144. 

Genus BoLEICHTHYS Girard. 
The Little Darters. 
Boleichthys fusiformis (Girard). 
PLATE 47. 
Darter. Crimson Darter. Fusiform Darter. 
Head 3%; depth 5%; D. XI-lj1, 8, 1; A. 11,65 scalest 
in lateral line to end of tubes, 50 to base of caudal, and several 
more on latter; 3 scales obliquely back from origin of spinous 
dorsal to lateral line; 11 scales obliquely back from origin of 
second dorsal to base of second rayed anal; snout 6 in head; eye 
4; maxillary 324; interorbital space 64%; fourth dorsal spine 
15/,; second branched dorsal ray 1°/;; third anal ray 2; least 
depth of caudal peduncle 2% ; caudal 11/,;); pectoral 1%. Body 
elongate, slender, compressed. Head rather narrow, elongate, 
profiles more or less similar. Muzzle short, convex. Eye a little 
longer than deep, far anterior. Mouth oblique and jaws even. 
Maxillary reaching front rim of pupil and its distal expansion a 
