1885.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 575 



Not having a specimen of C. auriceps, Gould, for comparison, I am 

 unable to state wliether tbe Cozumcl s])ecies is more uearly related to 

 it or to (J. caniveti (Less.). Tbe three species (tbe males, at least) ap- 

 pear to differ only in proportions. There is certainly no appreciable 

 difference in color between males of G. forficatus and those of C. caniveti; 

 and Mr. U. G. Elliot says (Ibis, 1875, p. 1G9) that '' in size and general color 

 of plumage" C. auriceps and G. caniveti " are as nearly alike as can bej 

 and specimens of caniveti possess as brilliantly colored crowns as any 

 that can be found in auriceps, thus reducing the distinctive character of 

 its name to niV G. auriceps, according to Mr. Elliot (1. c), "is remark- 

 able for its narrow and greatly lengrht ned outer rectrices, which ex- 

 tend beyond those next to them .55 of an inch," and must therefore be 

 distinct from G. forficains. 



Family PICID^. 



[49. Dryohates scalurin {\\i\^^\.). Devis collection.] 

 I'icus scalaris Salvin. Ibis, April, 1885, 191. 



f- 50. Centurus dubius leei Eidgw. 



Ctnfurus led, EiDGW. Descr. New Sp. B. Coznmel, February 26, 1885, 3. 

 Centurus dul)his, Salv. Ibis, April, 1885, 192 (nee Pieus duMus Cabot). 



Sp. CHAR. — Similar to G. duhius (Cabot), but lower parts darker, and. 

 lower rump and upper tail coverts usually barred with black. 



Adult S (type, No. 102,777, U. S. Nat. Mus., Cozumel, January 28): 

 Frontlet dull vermilion-red ; crown, occiput, and cervix crimson, be- 

 coming gradually lighter, or more of a vermilion-red, on the lower part 

 of tbe cervix, tbe^ crimson of the crown separated from the lighter red 

 of the frontlet by a narrow band of pale buffy gray. Upper parts black, 

 thickly marked with narrow undulated bars of soiled white, these bars 

 about .05 of an inch wide and .08-.10 of an inch apart on the back, but 

 much farther apart on the wings (.12-.15 of an inch). Primary-coverts 

 immaculate black ; primaries black, with a few irregular spots of white 

 near the base, the 6th to 10th quills, inclusive, with narrow terminal 

 margins of white. Lower part of rump and upper tail-coverts soiled 

 white, everywhere narrowly barred with black, the bars about .05 of 

 an inch wide and .15 of an inch apart. Tail uniform black, the outer 

 featber (on each side) with two irregular narrow bars of brownish white 

 across both webs near the tip. tbe exterior margin indented with white 

 for nearly tbe terminal half. Sides of bead and neck, and lower parts 

 generally, i)lain smoky drab, ligbtei- toward the chin, but especially 

 before and above the eye, more olivaceous on the sides : abdomen bright 

 vermilion-red; femorals, anal region, and lower tail-coverts barred with 

 dusky and brownish white, the latter somewhat tinged with red. Bill 

 black; feet dnsky (olive-greenish in life'?). Wing, 5.15 ; tail, 3.90. 



Adult ^ (No. 102,781, U. S. Nat. Mus., Cozumel, Jaouary 28): Simi- 

 lar to the male, as described above, but red of tbe bead confined to the 

 frontlet and cervix, the occiput and crown being smoky gray or light 



