1885.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 559 



As compared with Z. craUcida Goode and Bean (Proc. U. S. Nat. 

 Mus., 1882, 433), the species now nnder consideration appears to dilier 

 in the following respects : Tlie interorbital space is wider, the snont 

 shorter, the candal pednncle shorter, thus bringing tlie insertion of the 

 dorsal relatively further back ; there are rows of dots in the spaces be- 

 tween the longitudinal stripes, and the fish has orange, instead of 

 *' brilliant white," cheeks. It is possible, however, that Z. craticula will 

 prove to^be a synonym of 2r, nottii. 



Butler University, Irvington, Ind., July 1, 1885. 



DESCRIPTION OP AN APPARENTLY NEW SPECIES OF DROMO- 

 ,- COCCYX FROM BRITISH GUIANA. 



Dromococcyx gracilis, sp. nov. 



Sp. Char. — Smaller than D.phcmanellus (Spix), with much slenderer 

 bill, narrower rectrices, and difterent coloration. Adult (No. 81,853, U. S. 

 Nat. Mus., Demerara, British Gniaiia ; O. Lugger, coll.). Pileura dull 

 ferruginous, the concealed central and basal i)ortion of the feathers 

 dusky, the lengthened occipital feathers brighter rusty at ends ; auricu- 

 larsdull ferruginous; rest of head, including superciliary stripe, and also 

 the chin, throat, jugulum, and cheeks, deep ochraceous (paler on the 

 chin and throat), wholly fre§ from markings. Upper parts blackish, 

 the feathers broadly margined with ash-gray, the terminal margin of 

 the wing-coverts, broadly, dull buffy white ; upper tailcoverts each with 

 a terminal small rhomboidal spot of white. Eectrices dull brownish 

 slate on upper surface, each broadly tipped (for about .30 of an inch) 

 with dull white; under surface brownish gray, with white shafts, the 

 white tip on each feather preceded by a subterminal bar of dull black, 

 about .30 of an inch (more or less) in width. Lower i)art8 (from jugu- 

 lum back, including lining of wing) immaculate dull white. Wing, 5.50; 

 tail, 0.80 (the intermedise projecting 1.75 beyond tips of the longest upper 

 coverts) ; culmen, .95 ; bill from frontal apices, .70 ; greatest depth, .20 ; 

 tarsus, 1.10. 



This species may possibly be the same as von Pelzeln's D.pavoninus^ 

 (Orn. Bras., p. 270), from Southern Brazil ; but the description of the lat- 

 ter is so meager as to render the name practically a nomen nudum. 



