ADDENDA 29. SILURID.E ICTALUEUS. 881 



Page 101, Instead of Pilodictis read: 



53. L.EPTOPS Rafinesque. 



(Rafiuesque, Ichth. Oh. 1820,64: type Pimelodus viscosus Raf. =Silurus olivaris Raf. 

 Ac;rr6?, small; &)i}>, eye.) 



The species should stand as 



91. L. olivaris (Raf.) J. & G. 



u Pilodictis limosus" Eaf. was likewise based on a "drawing by Mr. 

 Audubon," which drawing, as shown by Rafinesque's copy, is merely a 

 fancy sketch of an imaginary cat-fish. The name should therefore be 



disregarded. Of the remaining synonyms of this type, Leptops stands 



next in date. 



\ 



C:i page 105, after Amiurus catiis, add: 

 98 (//). A. brachyacanthus Cope. 



BJackish, yellowish below. Body robust. Head not depressed ; eye 

 small, 7 in head. 4 in interorbital width. Maxillary barbels reaching 

 middle of pectoral spine; mental barbels to beyond the brauchioste- 

 gals; jaws equal. Dorsal and pectoral spines small, acute, not con- 

 cealed in the skin, equal in length, less than the interorbital width, 

 and not one-third distance from snout to dorsal; pectoral spine weakly 

 serrate behind only; caudal not described. Head 3f ; depth 4fl D. I, 

 6; A. 22; P. I, 6. Medina Kiver, Texas. (Cope.) 



(Cope, Bull. U. S. Nat. Mus. xx, 35, 1880.) 



On page 105, after Amiurus natalis, add: 

 1OO (6). A. belli Cope. 



Olivaceous, belly and lower barbels pale. Body very slender. Head 

 flat, one-fifth longer than wide; jaws subequal; base of anal as long as 

 head. Pectoral spine finely serrate posteriorly, more than half length 

 of head; dorsal spine long, smooth, a little shorter than pectoral, its 

 base a little nearer muzzle than adipose fin; longest anal rays half 

 head; caudal rounded, its upper rays longer than lower. Head 3; 

 depth 5|. A. 25. Little Wichita Eiver, Texas. (Cope.) Perhaps a 

 variety of A. natalis. 



(Cope, Bull. U. S. Nat, Mus. xx, 35, 1880.) 



Page 106. The genus Ictalurus has been heretofore usually distin- 

 guished from Amiurus by the connection of the supraoccipital process 

 with the second interspiual. In all the species with truncate or rounded 

 caudal fin, there is a considerable interval between these bones. In the 

 Bull. Nat. Mus. No. 16 56 



