180 BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



Range. — Known only from the type locality. 

 Type locality. — Lerma, Mexico. 



Porsana goldmam Nelson, Proc. Biol. Soc. Washington, xvii, Oct. 6, 1904, 151 

 (Lerma, Mexico; coll. U. S. Nat. Mus. ) .—Cooke, U. S. Dept. Agr. Bull. 12S, 

 1914, 21 (geogr. range). 



Cotumicops novehoracensis goldmani Peters, Check-list Birds of World, ii, 1934, 

 193. 



Census GALLINULA Brisson 



QalUnula Beisson, Orn., i, 1760, 50; vi, 1760, 2 (Type, by tautonymy, iGallinular\ 

 gallimila Brisson= Fulica chloropus Linnaeus). — Schaeffer, Mus. Orn., 

 1789, 58 (Type, Fulica chloropus Linnaeus). — Latham, Index Oni., ii, 1790, 

 766 (23 species enumerated). 



Eydrogallina LacepI:de, Tabl. Ois., 1799, 19. (Type, by original designation, 

 "Hydro-galline"=GaHwMia Brisson. ) 



Stagnicola Bbehm, Isis, 1830, 992. (Type, by monotypy, -Fulica chloropus 

 Linnaeus.) 



Oalinida H^xleb and Snodgbass, Proc. Washington Acad. Sci., v, 1904, 257 

 (unintentional emendation). 



Large Gallinulae (wing about 153-231 mm.) with the broad frontal 

 shield extending only as far backward as middle of eye, its posterior 

 extremity broadly rounded to nearly truncated ; nostril narrowly 

 ovate (almost slitlike) and much nearer to maxillary tomium than to 

 culmen ; depth of bill at posterior end of nostril equal to less than half 

 the distance from posterior end of nostril to tip of maxilla ; tarsus not 

 longer (sometimes shorter) than outer toe without claw, the inner side 

 of planta tarsi with broken series of small, irregular scutella; toes with 

 a distinct though narrow marginal membrane along each side, and 

 coloration slaty (more or less brownish above), with lateral under tail 

 coverts white and white stripes along outer edge of sides and flanks. 



Bill about as long as head or slightly shorter, rather narrow in 

 vertical profile, its depth at posterior end of nostril equal to less than 

 half the distance from posterior end of nostril to tip of maxilla ; its 

 width at same point equal to half the depth or a little more ; culmen 

 broad and elevated basally, much narrower and more or less depressed 

 above nostrils, thence more or less arched and decurved to tip ; gonys 

 at least two-thirds as long as mandibular rami, nearly straight ascend- 

 ing terminally, its base not prominent; mandibular rami with a more 

 or less distinct lateral groove (formed by prominence of proximal 

 two-thirds of mandibular tomium) ; nasal fossa well defined anteri- 

 orly, extending for at least half the distance from loral antia to tip of 

 maxilla; nostril very narrowly ovate (almost slitlike), in lower edge 

 of nasal fossa and much nearer to tomium than to culmen, separated 

 from the loral antia by a space about equal to its length ; frontal shield 

 tumid, subquadrate, becoming broader posteriorly, its greatest width 

 less than its length, its posterior outline convex to subtruncate, its 



