BIRDS OF NORTH AND MIDDLE AMERICA 43 



or subacuminate ; upper parts striped with black, under parts 



gray, the flanks barred Porzana, part (extralimital)" 



gg. Middle toe, without claw, much shorter than tarsus; nostril 

 relatively much larger, the pervious anterior portion longer 

 and longitudinally elliptical; mandibular rami with a dis- 

 tinct lateral groove; feathers of alula rounded terminally; 

 upperparts not striped (plumage wholly plain rufescent). 



Amaurolimnas (p. 106) 

 ■ft. Nostril wholly pervious. (Color plain olive above, the head, neck, 

 and underparts plain gray, the flanks barred). 



Neocrex (extralimital)" 

 dd. Toes relatively much longer, the inner toe (without claw) longer than 

 culmen. 

 e. Longest primaries exceeding distal secondaries by one-third, or more, 

 length of wing, outermost as long as or longer than sixth (from 

 outside) ; alula falling far short of tips of longest primary coverts ; 

 tail half as long as wing, or more, the rectrices distinct, much 



longer than upper coverts Porzana part (p. 132) 



ee. Longest primaries exceeding distal secondaries by much less than 



one-third length of wing, outermost shorter than seventh (from 



outside) or else (Cotumicops) secondaries partly white and axll- 



lars white; alula falling little short of tips of longest primary 



coverts, sometimes extending beyond them ; tail much less than 



half as long as wing, the rectrices indistinct, scarcely, If at all, 



longer than upper coverts. 



f. Longest feather of alula falling short of tips of longest primary 



coverts. 



g. Bill much shorter, not more than half as long as head ; toes 



shorter, first two phalanges of middle toe (together) decidedly 



shorter than tarsus, hallux (without claw) less than half as 



long as tarsus ; no black loral streak nor white supraloral 



streak. 



h. Nasal fossa indistinct anterior to nostril, the latter more oblique 



(higher anteriorly, lower posteriorly), more distinctly oper- 



culate ; secondaries partly white ; under wing coverts and 



axillars immaculate white; plumage of upperparts glossy, 



broadly striped with black and narrowly barred with white, 



the chest, etc., huffy, ochraceous, or brownish, more or less 



distinctly barred Cotumicops (p. 170) 



Tih. Nasal fossa very distinct anterior to nostril, the latter more 

 in line with axis of maxilla, less distinctly operculate; 

 secondaries without white ; under wing coverts and axillars 

 dusky, narrowly barred with white ; plumage of upperparts 



'^ Porzana albicollis (Vieillot). — RaUu» albicoUis Vieillot, Nouv. Diet Hist. 

 Nat., xxvlii, 1819, 561 (Paraguay). — MusteliraUus Bonaparte, Compt. Rend., xliii, 

 Sept 1856, 599 (type, by monotrypy, Rallus anicoUis Vieillot). — MustelHraUus 

 (emendation) Heine and Reichenow, Nom. JIus. Hein. Om., 1890, 320. — GaJeolim- 

 nas Heine, in Heine and Reichenow, Nom. Mus. Heln. Orn., 1890, 320 (new name 

 for MustellwalVua on grounds of purism). South America. 



''Neocrex (subgenus of Por;o«a) Sclater and Salvin, Proc. Zool. Soc. London, 

 1868 (published Apr. 1869), 450, 457 (tj-pe, by monotypy, Porzana en/tTiro-ps 

 Sclater). South America. One species. 



