438 DR. J. E. GRAY ON THE BRADYPODID^. [May 2, 



inferius albido limbata ; collo anteriore toto ac gastraeo notaei colore, 

 immaculatis. Adult. 



" Animal Junius. Rufescens ; notseo distinctius albo-bivittato ; 

 fronte stricte aut vix alba ; vitta oculorum breviore, ad initium supra 

 et subtus rufescenti-albo limbata. 



" Macula spinae dorsi (in fannina) pone humerum subrotunda ; 

 pilis adjacentibus plus miuusve 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. cucitlliffer.W agl. 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 c? aurantiacam 

 persecante." 



This, he says, is gularis of Riippell, the Ai (adulte) of Buffon 

 (tab. v. & vi.), and the " Ai a dos ira/e" 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 iudicate that his species must 

 be different. 



3. B. infuscatus,Wag\. Isis, 1831, p. 611. 



" B. fuliginoso-fuscus, supra seriebus longitudinalibus macularum 

 albidarum subquaternis ; fronte temporibusque flavido-albis ; vitta 

 utrinque post oculum oblique deducta nigra ; vitta dorsali fusca, ma- 

 culam cf aurantiacam persecante. 



" Var. a. Intense fuligiuoso-fusca, maculis dorsalibus dilute bruu- 

 nescentibus ; mandibula gulaque fuscescentibus. 



" Yar. ft. 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 my monograph, published in the * Proceedings of the Zoological 

 Society' for 1849, p. 69, under these conflicting opinions I consi- 

 dered the orange mark a specific character, and adopted RiippeU's 



