186 CICONIIDZ. 
- Hab. Mexico, both coasts (Sumichrast +), Mazatlan (Bischoff '®, Grayson 1° *), Tampico 
(Richardson), Alta Mira (Armstrong *4), San Andres Tuxtla, Vera Cruz (Sallé'), 
Cateman (Boucard 2), La Antigua (Trujillo ®°), Atoyac (Mrs. H. H. Smith ®°), Jalapa 
(de Oca#), Plan del Rio, Santa Ana (Ferrari-Perez *°), Paso de la Milpa (Ferrari- 
Perez®?), Tehuantepec (Richardson), Santa Efigenia (Sumichrast1!), N. Yucatan®, 
Rio Lagartos 17, Cozumel I. 7° (G@aumer) ; British Honpuras, Grassy Cay (0. 8.5) ; 
Guaremata, Atlantic coast (Skinner+), Pacific coast4, Las Salinas ° (0. 8.) ; 
Nicaragua, Rio Escondido (Richmond ?° 23), Momotombo (Jtichardson 2°), Ometépe 
I, Lake of Nicaragua (Nutting 1°); Costa Rica (v. Frantzius’”), Rio Grande 
(Cooper *), Pozo Azul de Pirris, Las Trojas (Zeledon 1°), Rio Frio (fichmond 23). 
La Palma, Gulf of Nicoya (Nutting 15); Panama (M‘Leannan§), Mina de Chorcha 
(E. Arcé® 2°), Lion Hill Station (Brown **). 
The northern form of Boatbill, C. zeledoni, is, like Tigrisoma cabanisi, a species 
peculiar to the Central-American subregion, where it is plentifully distributed in 
suitable localities. 
Salvin found it on different occasions on the Cays of British Honduras and in 
Guatemala, skulking in the mangroves, also amongst the forest-swamps on the Pacific 
coast. In Costa Rica Mr. Nutting met with Boatbills associating in small flocks 
like Night-Herons, which they resemble in their harsh croak and in their nocturnal 
habits. Mr. Richmond noticed several colonies on the Rio Frio. 
Nothing has been recorded of the nidification of this bird. 
Fam, CICONIIDE. 
The Storks resemble both the Herons and the Cranes in outward appearance, and 
their young require, like those of the former, to be fed by their parents for some time. 
The characters which divide the Storks from the Herons are: the elevation of the 
hallux or hind toe, which is not on the same level as the others, the absence of powder- 
down patches on the body, and the comb on the claw of the middle toe. There are 
also several other distinctions between the two families, osteological and otherwise. 
The Ciconiide are divisible into two subfamilies—the true Storks (Ciconiine) and 
the Wood-Ibises (Tantalinz), both of which are represented in the New World. 
Subfam. CICONIINE. 
All the true Storks have a powerful and straight bill, with no downward curve at 
the end of the mandibles. Mr. Ridgway has given a very complete account of the 
characters which distinguish the Ciconiinz, from which we select the following :—* Bill 
elongate-conical, acute, compressed, the end not decurved. Nostrils lateral rather than 
