BIRDS OF NORTH AND MIDDLE AMERICA 403 



C[yrtony.v] occllatns Baird, Brewer, and Ridgway, Hist. North Aincr. Birds, iii, 

 1874, 492.— Ridgway, Man. North Amer. Birds, 1887, 194. 



Cyrtonyx occllatus oceUaius Peters, Check-list Birds World, ii, 1934, 57. 



[Cyrtonyx] [occllatus] occllatus Griscom, Proc. New England Zool. Club, xiii, 

 1932, 56, in text (Guatemala). 



Cyrtonyx sumiclirasti Lawrence, Ann. New York Acad. Sci., i, 1877, 51 (moun- 

 tains of Santa Efigenia, Tchuantepec, Oaxaca; coll. U. S. Nat. Mus.). — Ridgway, 

 Man. North Amer. Birds, 1887, 194, footnote. 



C[yrtonyx] occllatus sumiclirasti Ridgway, Man. North Amer. Birds, 1887, 194, 

 footnote, in text (crit.). 



Cyrtonyx occllatus diffcrens Griscom, Proc. New England Zool. Club, xiii, 1932, 

 56 (Hatillo, Honduras; type in Mus. Comp. Zool.; meas. ; crit.). — Peters, 

 Check-list Birds World, ii, 1934, 57 (w. Honduras and n. Nicaragua). — Dickey 

 and VAN Rossem, Birds El Salvador, 1938, 155 (El Salvador; Los Esesmiles; 

 spec; distr. ; colors of soft parts). 



Genus RHYNCHORTYX Ogilvie-Giant 



Rhynchortyx Ogilvie-Grant, Cat. Birds Brit. Mus., xxii, 1893, 443. (Type, by 

 monotypy and original designation, Odontophorus spodiostclhus Salvin and 

 Odontophorus cinctits Salvin (the former is the male, the latter the female of 

 the same species).) 



Medium-sized or rather small short-tailed Odontophorinae (wing about 

 111-125 mm.) with only 10 rectrices, tarsus much longer than middle 

 toe with claw, claws very small (the longest much shorter than second 

 phalanx of middle toe), relatively large and very thick bill (chord of 

 culmen nearly equal to combined length of first two phalanges of middle 

 toe), the outer side of planta tarsi with a single continuous series of 

 large obliquely transverse scutella, the inner side without scutella (except 

 overlapping ends of outer series). 



Bill relatively large and very thick, the chord of culmen (from extreme 

 base) equal to nearly half the length of tarsus and nearly if not quite 

 equal to combined length of first two phalanges of middle toe ; depth of 

 bill at base much greater than distance from anterior end of nasal fossa 

 to tip of maxilla, equal to nearly one-third the length of tarsus, and de- 

 cidedly greater than width of bill at rictus ; culmen very strongly convex, 

 slightly arched basally, distinctly (but not sharply) ridged ; tip of maxilla 

 strongly produced, forming a conspicuous thick unguis ; gonys rounded 

 in transverse section, slightly convex, ascending terminally, its basal angle 

 not prominent. Outermost primary a little shorter than eighth, the third, 

 fourth or third, fourth and fifth (from outside) longest. Tail about one- 

 third as long as wing, rounded, the rectrices (12) moderately firm, broad, 

 with rounded tips. Tarsus much longer than middle toe with claw, be- 

 tween one-fourth and one-third as long as wing, the planta tarsi with 

 a single series of large, obliquely transverse scutella which overlap to 

 the posterior portion of inner side, destitute of small scutella or scales 

 on either side; claws exceedingly short, that of the middle toe but little 



