520 NEW YORK STATE MUSEUM 



are the only species of darters in the lake, and neither of them- 

 occurs in the streams on the uplands. 



Though usually considered as being limited to western New 

 York, Eugene Smith says it is not altogether rare in the- 

 Hackensack valley streams, perhaps the easternmost locality 

 in which it occurs. 



It grows to a length of 2-J inches and abounds in clear rocky 

 streams. It is very active and tenacious of life and is an- 

 excellent species for the aquarium. 



Genus BOLEICHTHVS Girard 



This genus contains small and slender species allied to those 

 of the section Oligocephalus under Etheostoma. 

 The lateral line is incomplete and has a slight upward curve 

 anteriorly instead of being straight, as in all the species of 

 Etheostoma. Top of head not scaly. Lowland streams 

 and swamps. The species few, variable and hard to determine. 



257 Boleichthys fusiformis (Girard) 



Boleosoma, fusiformis GIRARD, Proc. Bast. Soc. Nat. Hist. 41, 1854. 



Hololepis fusiformis VAILLANT, Recherches sur Etheostom. 131, 1873, with 



plate. 

 Poecilichtkys fusiformis JORDAN & GILBERT, Bull. 16, U. S. Nat. Mus. 520,. 



1883. 

 EtJieostoma fusiforme EVERMANN & KENDALL, Bull. U. S. F. C. XII, 115,. 



1894; EUGENE SMITH, Proc. Linn. Soc. N. Y. 1897, 37, 1898. 

 Boleidithys fusiformis JORDAN & EVERMANN, Bull. 47, U. S. Nat. Mus. 



1101, 1896, pi. CLXXVII, fig. 469, 1900. 



Body moderately elongate, strongly compressed. The depth 

 is contained six times in the length. Head rather long and 

 narrow. The length is one fourth that of the body. The 

 muzzle short, decurved, shorter than eye; mouth comparatively 

 large, terminal; maxillary reaching past front of eye; eyes 

 large, four in head; opercular spine strong; lateral line begin- 

 ning at the eye, on about 12 to 15 scales; neck scaly; belly and; 

 throat scaly. D. X-9; A. II, 7; lateral line 55. 



Olivaceous, dotted with dusky points; second dorsal and anal 

 speckled. 



