18 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1885. 



given on the label is " Ocean Pacifique," but some one has added in 

 pencil "Coast of Peru." 



€E. fislieri and CE. defilippiana are very distinct. The latter is de- 

 cidedly less in general size, although the bill is absolutely larger than 

 in (E. fisheri. The lower parts are entirely white, except on the sides 

 of the breast, where there is an encroachment of the pure ash-gray of 

 the naj)e. The top of the head is quite uniform gray, except anteriorly, 

 where the feathers are bordered with white, producing a distinct squa- 

 mation. The wings are entirely concolor on their outer surface, and 

 the inner web of the outer tail-feather is wholly pure white. The diag- 

 nostic characters of the two species should therefore be amended as 

 follows : 



(E. fisheri. — Lower parts chiefly smoky plumbeous on the surface, 

 this color nearly uniform on belly and flanks; greater wing-coverts, 

 secondaries and tertials silvery plumbeous, broadly edged with pure 

 white, the lesser coverts uniform dusky in strong contrast; rectrices 

 (except middle pair) white, transversely vermiculated on both webs 

 with ash-gray; top of head white, spotted with dusky; feet, including 

 webs, dusky, except basal portion of inner web and toe. Wing 10.15, 

 tail 4 (graduated for .90 of an inch), culmen 1, tarsus 1.25,* middle toe 

 with claw, 1.70. 



(E. defilippiana. — Lower parts entirely pure white, except on sides of 

 breast, which are ash-gray, like the nape. Outer surface of wings uni- 

 form dusky; rectrices uniform ash-gray, except two outer pairs, which 

 have inner webs white (the second finely sprinkled with gray towards 

 end), the outer webs finely mottled gray; feet, including webs, pale- 

 colored (fleshy in life), except outer side of outer toe, which is dusky. 

 Wing, 8.70-9.00; tail, 3.80-4.00 (graduated for 1.00 inch); culmen 1.04- 

 1.05; tarsus 1.07-1.12; middle toe with claw, 1.40. 



In pattern of coloration and in dimensions CE. defilippiana resembles 

 much more closely the OS. cooki; but the latter has the pileum and nape 

 very much darker (dark sooty slate, almost black in some lights), all 

 the rectrices gray on both webs, and the feet dark colored except basally. 

 (E. cooki is also a little smaller than (E. defilippiana. 



Smithsonian Institution, January 16, 1885. 



ICTERUS CUCUIiLATUS, SWAINSON, AND ITS GEOGRAPHICAL 



VARIATIONS. 



By ROBERT RIDCWAIT. 



The National Museum having recentlj^ acquired some very intensely 

 colored examples of this species from Yucatan, which on first sight ap- 

 peared conspicuously different from Arizona specimens of the same 

 species, a careful examination was made of all the material accessible 



*Not 1.35 as erroneously printed in original description. 



