164 AEDEID^. 



states that a method of procuring food is by "raking" or "scraping" the ground in 

 the swamps, and then pouncing on any prey which may thus have been disturbed. 

 He also saw this Egret in companies, hovering above a shoal of smaU fishes, and 

 endeavouring to catch them after the manner of Terns. Two or three nests composed 

 of sticks are generaUy placed in the same low tree overhanging the water. The eggs 

 are two or three in number, of the usual blue colour. 



4. Ardea tricolor. 



Heron bleudtre a ventre Uanc de Cayenne, Daubent. PI. Enl. viii. t. 350'. 



Ardea tricolor, P. L. S. Miill. Syst. Nat., Suppl. p. Ill ^ 



Hydranassa tricolor, Ridgw. in Baird, Brewer, & Ridgw. Water-Birds N. Amer. i. p. 40' ; Shaxpe, 



Cat. Birds Brit. Mus. xxvi. pp. 126, 273 * ; Salvad. & Festa, Boll. Mus. Torino, xiv. no. 339, 



p. 11'. 

 Ardea ludoviciana (nee Gm.), Wilson, Amer. Orn. viii. p. 13, t. 64. fig. 1 * ; Salv. Ibis, 1889, 



p. 376\ 

 Demiegretta ludoviciana, Scl. P. Z. S. 1860, p. 253 ' ; Scl. & Salv. P. Z. S. 1864, p. 371 ' ; Salv. 



Ibis, 1865, p. 192"; 1866, p. 196"; La-BT. Ann. Lye. N. Y. ix. pp. 142", 210". 

 Hydranassa tricolor ludoviciana, Ridgw. in Baird, Brewer, & Ridgw. Water-Birds N. Amer. i. 



p. 39"; Nutting, Pr. U. S. Nat. Mus. vi. p. 379 '\ 

 Ardea cayanensis, Licbt. Preis-Verz. Mex. Vog. p. 3 '" ; Cab. J. f. Orn. 1863, p. 59 ^'. 

 Herodias leucogaster (nee Gm.), Gray, List Grallse Brit. Mus. p. 79 ". 

 Demiegretta leucogastra, Sumiehr. La Nat. v. p. 233 ". 

 Egretta ruficoUis, Gosse, Birds Jamaica, p. 338, pi. 93 ^°. 

 Ardea tricolor ruficoUis, Ridgw. Pr. U. S. Nat. Mus. viii. p. 355 "' ; Ferrari-Perez, Pr. U. S. Nat. 



Mus. ix. p. 169 '' ; Zeledon, An. Mus. Nac. Costa Rica, i. p. 130 (1887) "'; Stone, Pr. Acad. 



Philad. 1890, p. 203"; Ricbm. Pr. U. S. Nat. Mus. xvi. p. 527''; A. O. U. Check-1. N. 



Amer. Birds, 2nd ed. p. 72'". 

 Hydranassa ruficoUis, Sbarpe, Cat. Birds Brit. Mus. xxvi. pp. 127, 274 '" ; Gates, Cat. Eggs Brit. 



Mus. ii. p. 122''. 

 Ardea leucoprymna, Licbt. Nomencl. Av. Mus. Berol. p. 89 ^'. 

 Demiegretta leucoprymna, Lawr. Mem. Bost. Soc. N. H. ii. p. 310'°. 

 Demiegretta leucogastra, var. leucoprymna, Lawr. BuU. U. S. Nat. Mus. no. 4, p. 48 ". 



Supra saturate schistacea, pauUulum lilaceo adumbrata, plumis elongatis dorsaHbus lilacino-brunneis, apicem 

 versus albicantibus ; alis caudaque schistaceis ; pileo saturate scbistaceo, nuchse coUique plumis elongatis 

 violascentibus ; crista mediana plumis albis, interdum absentibus, ornata ; facie laterali et colli lateribus 

 saturate schistaceis, his elongatis et violascentibus ; mento et gula superiore pure albis, gutture et prae- 

 pectore medio vinaceo-oastaneis, hujus plumia quoque basaliter plus minusve albis ; corpore reliquo subtus 

 cum subalaribus et axiUaribus pure albis ; remigibus intus canis : rostro cyaneo, apicem versus nigro, 

 basin versus lilacino ; area nuda lorali Ulacina ; pedibus schistaceis ; iride rubra. Long, tota circa 18"5, 

 alee 10*8, caudae 3'5, culm. 3-9, tarsi 4'1. (Descr. maris adulti ex Tampico. Mus. nostr.) 

 2 mari similis. Long, tota circa 20'0, alae 9*7. 



Ptil. hiem. ptilosi ffistivae similis, sed plumis ornamentalibus absentibus ; crista nuchali nulla. 



Jtcv. adultis simUis, sed pallidior, notsei plumis ferrugineo vel castaneo-rufo lavatis et marginatis ; dorso 

 postico, uropygio et supracaudalibus albis ; pUeo, facie laterali et coUo castaneo-rufis, hoc lateraUter 

 plumia schistaceo-dimidiatis omato ; pectoris quoque lateribus dimidiatim schistaceis et albis ; gula alba ; 

 gutture maculis rufis et nigris variegato ; corpore reliquo subtus pure albo. 



