404 ADDENDA. 



To page 219, after Pleurolepis pellucidus, add: 

 2. P. asprelluS) Jordan. ROUGH SAND DARTER. Form 

 of P. pellucidus, but the squamation much more com- 

 plete, and the scales rougher; sides, back and breast 

 with imbricate scales; size larger and colors darker than 

 in pellucidus; fins high; D. IX 10; A. I., 8, lat. 1. 98. 

 Sandy streams in Illinois. "Has in life all the colors of 

 the rainbow." 



2. (b) 10 A, Jordan and Brayton. 



1. /. vHrea, (Cope) Jordan. GLASSY DARTER. A 

 species apparently similar to the last, but with smaller 

 fins, and much larger scales; D. VII 14, A. II, 9; lat. 

 1. 56. North Carolina. 



On page 225, after Nanostoma zonalis, add: 



2. N. vinctipes, Jor. May be known from N~. zonalis, 

 by the absence of the bands encircling the belly, and by 

 the fact that all the fins, including the ventrals, are 

 strongly barred. Illinois River. 



On page 227, after P. jessice, add: 



4. P. asprigenis, Forbes. ROUGH- CHEEKED DARTER. 

 Short and stout; cheeks and opercles entirely scaly / 

 scales large; lateral line about to end of second dorsal; 

 spines high ; coloration apparently as in variattts; 

 spinous dorsal dusky behind; D. XII 13; A. II, 8; lat. 

 1. 48. Illinois River. 



5. P. virgatus, Jor. A slender species, known by the 

 naked head, black-striped body (as in Etheostoma lineo- 

 latum), and by the presence of a black humeral scale. 

 Rock Castle R. 



6. P. punctu/atus, Ag., from Mo. and S., has likewise 

 a black humeral scale, but the cheeks are scaly and the 

 bodj not striped. 



