BIRDS OF NORTH AND MIDDLE AMERICA, 
13 
Jacana gymnostoma AMERICAN ORNITHOLOGISTS’ Union, Check List, 1886, and 
2d ed., 1895, no. 288, part. 
J{acana] gymnostoma Ripeway, Man. N. Am. Birds, 1887, 183, part. 
Jacana spinosa gymnostoma Topp, Ann, Carnegie Mus., x, Jan. 31, 1916, 220 
(Mexico; crit.). 
Parra cordifera Lesson, Rev. Zool., 1842, 135 (Acapulco, Guerrero; coll. Paris Mus., 
fide Des Murs, Icon. Orn.).—Dzs Murs, Icon. Orn., Liv. 7, Dec., 1846, pl. 42. 
Jacana cordifera Des Murs, Icon. Orn. (1846?), table of contents. 
Asarcia variabilis (not Parra variabilis Linneus) Suarrz, Cat. Birds Brit. Mus., 
xxiv, 1896, 86, part (Brownsville, Texas; Mazatlan and Presidio de Mazatlan, 
Sinaloa; Zapotlan, Jalisco; Tepic, San Blas, and Santiago, Tepic; Acapulco, 
Guerrero; Tampico and Altamira, Tamaulipas; Jalapa and Jomotla, Vera 
Cruz; Teapa, Tabasco; Buctzotz and Cozumel Island, Yucatan).—Satvin and 
Gopman, Biol. Centr._Am., Aves, iii, 1903, 342, part. (lower Rio Grande 
Valley, Texas; Mazatlan; Manzanillo Bay, Rio Zacatulo, and Rio de 
Coahuyana, Colima; Guanajuato; Guadalajara, Zapotlan, and Jalisco, Jalisco; 
Lake Patzcuaro, Michoacan; Acapulco, Guerrero; Altamira and Tampico, 
Tamaulipas; Jalapa, Santa Ana, Jonatal, Cosamaloapam, and Alvarado, Vera 
Cruz; Laguna de Epatlan, Puebla; Santa Efigenia and Zonatepec, Oaxaca} 
Teapa, Tabasco; Buctzotz, Shkolak, and Cozumel Island, Yucatan; Tonala, 
Chiapas?). 
[Asarcia] variabilis SHarrn, Hand-list, i, 1899, 169, part. 
JACANA SPINOSA VIOLACEA (Cory). 
WEST INDIAN JACANA. 
Similar to J. s. spinosa but adults more richly colored, the greenish 
black more abruptly defined against the richer maroon color of breast, 
etc. the back deeper orricher maroon, and frontal shield averaging larger. 
Adult male-—Wing, 111-137 (119.2); tail, 37-45 (40); bill, from 
nostril, 16.5-19 (17.5), from posterior margin of frontal shield, 39-49 
(41.9); tarsus, 48-59.5 (53.5); middle toe, 48-58 (53.1).¢ 
Adult female.—Wing, 118-140 (131.1); tail, 41-48 (44.5); bill from 
nostril, 17-20 (18.5), from posterior margin of frontal shield, 41.5-50 
(46.4); tarsus, 55-59 (57.1); middle toe, 51-58.5 (56.2).° 
@ Highteen specimens. b Twelve specimens. 
Bill 
Bin | ‘post 
i pos ‘. 
Locality. Wing. | Tail. | from |margin| Tarsus. oe 
nostril.| of " 
frontal 
shield 
MALES, 
Nine adult males from Cuba............----.-.0022-5+- 124.1) 41.2) 17.8] 428] 54.4 54.1 
Seven adult males from Isle of Pines...........-------- 114.5 38.9 17.1 41.2 52.9 52 
Two adult males from Jamaica..............22--+-++5+ 113.5 39.5 18 39.7 51.7 53 
FEMALES. 
Four adult females from Cuba.......--...-...0-0eeeee+ 131.6 43.5 18.5-| 46.9 57.2 54.7 
Six adult females from Isle of Pines.............----+++ 129.1 44,2 18.2) 46.2) 67.2 56.6 
Two adult females from Haiti...............-.--.---+- 136.7 47.5 19.5 46 56.7 57.7 
Mr. Todd’s averages are as follows: 
Adult males (ten specimens).—Wing, 116.5; tail, 40; ‘“‘bill,’’ 30; tarsus, 51.5. 
Adult females (ten specimens).—Wing, 132; tail, 44; ‘‘bill,” 33; tarsus, 55.5. 
