1880.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 9 



34. Aiiiniocrypta vivax Hay. (liGoGl, 36385.) 

 Very abinulaut. 



This ispecies differs from A.pcllucida in a feature of coloration. Thei-e 

 is a blackish bar constantly across the base of the soft dorsal, and 

 nsiially a fainter one across the base of the caudal. The scales are 

 iiruier and rougher in A. vivax than in A. jieUaeida, and the nape be- 

 fore the dorsal is more or less closely scaled, while in A. pellucida this 

 is naked. Perhaps the two species may be found to vary into each 

 other. 



D. XI, 10. Lat. 1. about 75. 



35. Hadropterus phoxocephalus Nelhou. (36387.) 

 Not very common. 



36. Hadropterus a.spro Cope & Jordan. (30354, 30403.) 

 Not rare ; coloration very pale. 



37. Boleosoma camurum Forbes. (36402.) 

 One specimen taken in Poteau Eiver. 



38. Ulocentra histrio Jordan & Gilbert. (36386.) 

 Abundant in swift places in the Poteau River. 



39. Cottogaster shumardi Girard. 



Not very common ; the only Darter taken in the Arkansas River. No 

 bright colors in life. 



40. Cottogaster copelandi Jordan. (36360, 36404.) 



Abundant. This is the first notice of this species other than in the 

 original locality, White Eiver, at Indianapolis. 



No bright colors iu life. A dusky bar across spinous dorsal, but no 

 distinct spot. D. XI, 11; A. II, 8. Lat. 1. 57 to 59. Arkansas speci- 

 mens have the cheeks usually more or less scaly, as is also the nape. 



41. Diplesion blennioides Eafinesque. (36392.) 

 Lee's Creek. 



42. Etheostoma Whipple! Girard. (36353, 36377.) 



{PuciUclttlujs 2>u)iv1ttlatiis Jordan & Gilbert, Synopsis 510; not P. ininciuhilus 

 Agassiz.) 



Very abundant; the commonest of the Darters, living in the small 

 streams. Adults with many bright orange spots on the ])ody, arranged 

 somewhat in vertical rows ; young usually, but not always, with orange. 

 Vertical ti-ns largely blue-black, especially in the males. 



We have found Girard's type of Bolcichthys ichiiipJei a young female 

 of this species. The punctulatus of Agassiz is a different fish, never 

 fully described, and not seen since Agassiz's time until lately taken by 

 Gilbert & Meek in tributaries of the Osage. 



43. Etheostoma fusiforme Girard. (3()400.) 



A few small specimens without bright colors, agreeing closely with 

 the types o^ l^Kciliddhyx palusiris Gill)ert, a species wiiich we are now 



