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Show 438 DR. .1. E. GRAY ON THE BRADYPODIDA. [May 2, inferius albido limbata; collo anteriore toto ac gastreeo notaei colore, immaculatis. Adult. " Animal Junius. Rufescens; noteeo distinctius albo-bivittato ; fronte stricte aut vix alba ; vitta oculorum breviore, ad initium supra et subtus rufescenti-albo limbata. " Macula spina, dorsi (in fcemina) pone humerum subrotunda ; pilis adjacentibus plus minusve tecta fuscescenti-flavida, vitta per medium nigrescente longitudinaliter signata; pili hujus maculae mol-lissimi sunt, quasi sericei; pedes supra albido maculati; ungues albo-flavidi." (Isis, p. 610.) I have seen no specimen that agrees with Wagner's description. 2. B. cuculliger, Wagl. Isis, 1831, p. 605. B. cano-brunescens, irregulariter albo maculatus; sincipite facie guttureque pilis abbreviatis flavido-albis vestitis; occipite cerviceque pilis longioribus umbrino-fuscis supra juguli latera decumbentibus, stria postoculari nulla; vitta dorsali fusca, maculam <3 aurantiacam persecante." This, he says, is gularis of Riippell, the A'i (adulte) of Buffon (tab. v. & vi.), and the " A'i h dos bride" of Daubenton. I think that this latter reference is a mistake, as Daubenton describes the throat as brown. Wagler describes properly the streak before and behind the eye as very short, which agrees with our specimens; but Wagner says there are none, which would seem to indicate that his species must be different. 3. B. infuscatus, Wagl. Isis, 1831, p. 611. " J5. fuliginoso-fuscus, supra seriebus longitudinalibus macularum albidarum subquaternis; fronte temporibusque flavido-albis ; vitta utrinque post oculum oblique deducta nigra ; vitta dorsali fusca, maculam 6* aurantiacam persecante. " Var. a. Intense fuliginoso-fusca, maculis dorsalibus dilute brun-nescentibus ; mandibula gulaque fuscescentibus. " Var. /3. Maculis dorsalibus sordide albidis, mandibula gulaque pilis bicoloribus apice longius flavescentibus, basi fuscis. " Var. y. Paululum pallidior, mandibula gulaque brunnescentibus aut sordide lutescentibus." (Wagner, Supp. to Schreber's Saugt. iv. p. 148, 1844.) The character here given is a mere transcript of the one given by Wagler as quoted in a former page ; but he adds that the male has an orange dorsal spot, which is not mentioned by Wagler. Mr. Bridges considered the specimen he brought from Bolivia, with a yellow patch on the back, to be the male of the specimen without it; but we had no verification of the fact. In 1845, Riippell, in the 'Mus. Senckenbergianum,' iii. p. 138, described a Sloth with an orange patch on the back as a species under the name Bradypus gularis, and at tab. xi. gives two figures of it, one of them being coloured. In m y monograph, published in the ' Proceedings of the Zoological Society' for 1849, p. 69, under these conflicting opinions I considered the orange mark a specific character, and adopted Riippell's |