report of commissioner of fish and fisheries. [14] 



Order M.— NEMATOGNATHL (K) 

 Family XXX.— SILURIDJE. (29) 



50.— NOTURUS Rafinesque. (52) 

 $ Schilbeodes Bleeker. 



111. Noturus gyrinus Mitchill. Vu. (84) 



112. Noturus leptacanthus Jordan. Vs. (85) 



113. Noturus nocturnus' Jordan & Gilbert. Vw. 



114. Noturus funebris'^ Gilbert «fe Swain. Vs. 



115. Noturus latifrons'^ Gilbert & Swain. Vc. 



116. Noturus miurus* Jordan. V. (86,87) 



117. Noturus exilis* Nelson. Vw. (88) 



118. Noturus iusignis Richardson. Ve. (89) 



§ Noturus. 



119. Noturus flavus Rafinesque. Vw. (90) 



51.— LEPTOPS Rafinesque. (53) 



120. Leptops olivaris Rafinesque. V. (91) 



52.— GRONIAS Cope. (54) 



121. Grouias nigrilabris Cope. Ve. (92) 



53.— AMIURUS Rafinesque. (55) 



122. Amiurus brurmeus Jordan. Vse. (93) 



123. Amiurus platycephalus Girard. Vse. (94) 



124. Amiurus melas 6 Rafinesque. Vw. (95,96) 



125. Amiurus nebuloaus^ Le Sueur. V. (98) 

 125 b. Aviiurua neiulosua catulus^ GiiaiTd. Vsw. 



^Noturus nocturnus Jordan & Gilbert, Proc. U. S. Nat. Mus., 1885. Arkansas to 

 Texas. 



^ Noturus funebris Gilbert & Swain, Proc. U. S. Nat. Mus., 1885. Northern Ala- 

 bama. 



^Noturus latifrons Gilbert & Swain, Proc. U. S. Nat. Mus., 1885. White River, 

 Indiana. 



■• Noturus eleuthei'us seems to be inseparable from Noturus miurus. 



^Noturus elassochir Swain & Kalb (Proc. U. S. Nat. Mus., 1882, 639) seems to me 

 identical with Noturus exilis. I regard the latter as distinct from N. insignis. For a 

 detailed review of the genua Noturus, see Swain & Kalb, loc cit. 



"The species called in the Synopsis Amiurus xanthocephalus seems to be not distinct 

 from A. melas. Amiurus cragini Gilbert, Bull. Washburn Lab. Nat. Hist., 1884, 1, 10, 

 from Kansas, is identical with Amiurus obesm Gill, which I regard as the original mclas 

 of Rafinesque. Amiurus brack y acanthus Cope is probably the same species. The chief 

 characters by which A. melas is distinguished from A. ncbulosus are the much shorter 

 pectoral spines and shorter anal fm of the former. 



^The original Silurns catus L. was certainly not this species, or any other North 

 American siluroid. The oldest tenable specific name for this species is that of nebulo- 

 sits Lo Sueur. 



"The type of Pimelodus coft/Zits Girard should be referred to A. nebulosua rather than 

 to A. melas. It represents a slight variety of A. melas occurring in the lower Mississippi 

 Valley and Texas. 



