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Rh species for more than six hours together, but having no large shot I was unable to procure any.' Mr. Deppe told me afterwards that this Ateles was the only Monkey he got during his whole stay in Mexico from 1824 to 1827.

I have had the opportunity of examining this specimen in the Berlin Museum in company with Dr. Peters. It is an Ateles of a species allied to A. beelzebuth of Brazil and A. hybridus of New Granada, but probably referable to Ateles frontatus—Brachyteles (Eriodes) frontatus, Gray, (Voy. Sulphur). However this may be, it indubitably proves the existence of a species of this genus in Mexico, as far north as between 18° and 19° N.L. That this Ateles ranges still further north seems amply proved on the evidence of M. Auguste Sallé—the well-known Naturalist and traveller—from whom I have received the following communication relative to this subject:—

"La limite la plus nord ou on trouve des Singes à ma connaissance, est l'Etat de San Luis Potosi, aux environs du 23e dégré de latitude, dans le haut de la rivière de Tampico également. On en trouve une espèce dans les montagnes et lieux très déserts de l'Etat de Veracruz, aux environs de Cordova entre cette ville et Huatusco par le 19°. Je crois que c'est un Ateles, je ne sais pas au juste. Quoique très commun je ne l'ai pas vu aux Galeries du Museum, mais je tâcherai de vous en donner le nom; à Cordova on les nomme Changos. A la côte entre Veracruz et Tampico il y a de grandes forets ou en trouve. On dit qu 'il y en a deux espèces dans l'Etat de Chiapas."

In Guatemala Mr. Salvin informs me that Monkeys are rather scarce and difficult to be seen, but that three species have been described to him as existing there. Of one of them he has brought home an imperfect skin, which appears to be that of an Ateles.

In Nicaragua, M. Sallé states that he found four species of Quadrumana during his travels. Examples of two of these were purchased by the British Museum in 1848 through Mr. Cuming, and are now in the collection. One of the species is an Ateles (probably A. frontatus), the second is a Mycetes, described and figured by Dr. Gray in the Proceedings of the Zoological Society for 1848 under the name M. palliatus, and erroneously stated to be from Caraccas.

Further south, in Costa Rica, Dr. Peters informs me that the late Dr. Hoffman, who up to the time of his lamented death, worked vigorously at the Fauna of this interesting region, met with three species of Quadrumana and forwarded examples of all to Berlin, namely,—

1. An Ateles, apparently the same as Deppe's Mexican specimen—though varying in colour. "This species," writes Dr. Hoffman, "varies very much in colour from red to to grey. It is called Mono Colorado, and has a flavour like mutton."

2. Mycetes palliatus, Gray.

3. Cebus hypoleucus, Geoffr., called in Costa Rica Mono caro biancho. "It bellows like a dog," says Dr. Hoffman.

The Zoological Society have lately received some living examples of the Hapale œdipus, said to have been obtained from Chiriqui, and