PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 205 



43. Hadropterus phoxocephalus Nelson. 



This beautiful species was found very abundant in White River. A 

 single specimen was also taken in Salt Creek. 



44. Hadropterus aspro Cope & Jordan. 



Common in all larger streams. 



45. Serraria* sclera Swain. 



The types of this species were taken in Bean Blossom Creek, a trib- 

 utary of the West Fork of White River. A single specimen from Salt 

 Creek, Brown Countj^, Indiana, varies somewhat from the original in 

 the following respects : Maxillary reaching vertical from eye, which 

 equals length of snout. Preopercle with very well-marked denticula- 

 tions, the teeth short but sharp. Snout 4^ in head. Space between dor- 

 sals much less than length of snout. Longest dorsal spine ^ head. 

 Median line of belly with a distinct series of small spinous plates, be- 

 ginning slightly in advance of vent, and not continuing quite to base 

 of ventrals, the space on median line in front of this series naked. 

 There seems to be no reason for doubting that these plates are decidu- 

 ous. Entire region in front of pectoral fins covered with embedded 

 scales, of which the median series alone is conspicuous ; a small triangu- 

 lar area behind isthmus naked. Color much i^aler than in types j 

 dusky olive, with about 8 vague dusky cross-blotches along middle of 

 sides. AnaL and soft dorsal dusky, with a translucent streak above 

 their middle ; spinous dorsal with some dusky blotching. Caudal ob- 

 scurely barred. An enlarged, dark-edged humeral scale. 



46. Etheostoma flabellare Raf. 

 Common in smaller tributaries. 



47. PcBcilichthys caeruleus Storer. 



Very abundant, especially frequenting rapids of small clear streams^ 

 where the finest specimens are always found. 

 Indiana University, June 10, 1884. 



* Serraria, gen. no^". (type nadropterus scierus Swain). This form seems worthy of 

 generic separation from Hadropterus, with which it agrees in other respects, because 

 of the wide union of the branchiostegal membranes across the isthmus, and especially 

 the well-developed serration of the preopercle, which last character is not known to 

 occur elsewhere among the Etheostomatinw. The teeth are sharp and close set, and 

 are developed on both vertical and horizontal limbs of the preopercle. 



