154 PATAGONIAN EXPEDITIONS: ZOOLOGY. 



the much smaller and otherwise peculiar Canis sladeni Thomas from Cha- 

 pada, Matto Grosso. 



Genus CERDOCYON Ham. Smith. 



Cerdocyon Ham. Smith, Jardine's Nat. Libr., IX, 1839, 259, 291. Includes 

 Canis azarce Wied, 1826 (= Canis brasiliensis Schinz, 1821), Vidpes 

 niagellanicus Gray, and two unidentifiable species. 

 Lycalopex Burmeister, Thiere Bras., 1854, 95, part, as a subgenus of Canis; 

 includes Canis azarc2 Wied, C. vetitlus Lund, C cancrivoriis Desm.*, 

 C niagedauicus Gv2cy ; Erlaut. Faun. Bras., 1856, 24, 31 ; includes C 

 cancyivovus Desm., C vetidtis Lund, C fulvicaudns Lund. 

 Lycalopex Gray, P. Z. S., 1868, 511, as a full genus, to include L. vetidus 

 Lund, and C fnlincaitdns Lund. C cancyivorits is removed as the 

 type of Gray's Thoiis, gen. nov., nee Ham. Smith, 1839. 

 Pseiidalopex Burmeister, Erlaut. Faun. Bras., 1856, 24, 44, includes Canis 



azarce (Wied), C griseus Gray, C niagellanicus Gray. 

 Psendalopex Gray, P. Z. S., 1858, 512 = /^. azarce (Wied), P. grisens 

 (Gray), P. niagellatnciis (Gray), P. antarcticus (Shaw), P. gracilis 

 (Burm.). 

 Cercodocyon was proposed by Hamilton Smith in 1839, as a "section " 

 of his "subgenus " Cliaon, for a group of species he called " Aguara Foxes," 

 of which he recognized four species — (i) Cerdocyon niesoleuctts sp. nov., 

 (2) Cerdocyon gnaraxa, sp. nov., (3) Cerdocyon azarce (Wied), and (4) 

 Cerdocyon niagellanicus (Gray). The first was described from a living 

 specimen said to have come from South America; "it forms," he says, "a 

 kind of counterpart to 7 /ions niesomelas of the Cape [of Good Hope], and 

 might be mistaken for it." The specimen does not appear to have been 

 preserved, and the species has not been since identified. The second spe- 

 cies was described from one of the "original drawings of Prince John 

 Maurice of Nassau-Siegen," and is also unidentifiable. This leaves within 

 the genus two identifiable species, namely Canis azarce Wied and Vulpcs 

 niagellanicus Gray, both well known, and commonly recognized as con- 

 generic. 



Lycalopex, originally proposed by Burmeister as a subgenus of Canis, 

 in 1854, contained Canis azarce Wied and C vetulus Lund, to which he 

 also referred, in a footnote, Canis cancrivorus Desm. and C niagellanicus 

 Gray. In 1856 he removed Canis azarcs and C niagellanicus to his new 



