160 BULLETIN 56, UNITED STATES NATIONAL MUSEUM. 



bones; and an odorous gland occin)ies the top of the rump. Verte- 

 bra- : C 7, D 14, L 5, S 4, C 7. 



Professor Cope " refers the known S])ecies of TaijusiiU '* to three 

 subdivisions, which may be at some future time regarded as genera." 

 He places the Brazilian Siis tajacu Linnaeus in Notophorus Gray, 

 and the Texan Dlcotyles (nigulatuH Cope in Dicotyle.s Cuvier. On 

 the following page he describes what he considers to be intermediate 

 between Tayassv tajacu and T. angulation^ from Costa Eica, and in 

 conclusion observes: "It appears, then, that the latter [Tai/assu 

 angulatum] must be regarded as a subspecies [of Tayassu tajacu] 

 rather than a species.*" His subdivisions would, in such a case, have 

 only the value of subspecies instead of genera. On page 134, in his 

 amendment to the definitions he had previously given of the sub- 

 family Dicotylina'^ of the family Hippopotcnnida?^ and of the two 

 included genera. Dicotyles and Platygonus, he says: "That of the 

 subfamily ' Digits three ' should be supplemented by the w^ords ' on 

 the anterior foot, and four on the posterior.' '^ Inadvertently the 

 extra digit was placed on the Avrong foot, the digital formula being 

 4-3 instead of 3^. 



Subgenus TAYASSU Fischer (1814), 



TaijasuH. Merriam. I'roc. Biol. Sor. Wash.. XIV. it. 122. .Tuly 1!). 1001. Re- 

 stricted to the tdjacK-aiif/iihitiis group." 



Notophoriifi Gray. Proc. Zool. Soc. lS(t8, p. 4:^. Type iuul only species, Hits 

 tajacu Liniueus. Preoccupied by Notoplioriifi Fischer, ISll^Tayassii 

 Fischer, 1814. 



Tuffussii, T. S. Palmer. North American Fauna, No. 2;j, 1904, p. 955. 



Character,'^. — Smaller than Olidosu.sJ' with the skull less massive. 

 Sides of rostrum excavated over premolars, and divided into upper 

 and lower parts by continuation of the zygomatic ridge (fig. 4ra) ; 

 ])alate narrowed between canines and molars, Avith a sharp ridge run- 

 ning from first premolar to inner side of canine. Teeth smaller and 

 relatively narrow^ anteriorly ; second lower molar very much smaller, 

 Avitli anterior cusp high and slender, the posterior cusp nearly obso- 

 lete. (Fig. 5a.) 



TAYASSU ANGULATUM (Cope). 

 TEXAS PECCARY. 



Bicotijlcs aiiffiihitiis Cope. American Naturalist. XXIII, No. 2(JG. Feb- 

 ruary, 1889, pp. 140, 147 (original description) ; March, 1889, pp. 

 134, 135. 



Dicotyles tajacu, Elliot, Field Col. Mus. Zool. Ser., II, 1901, p. 33, pi. 

 XI ( Synop. Mam. N. Am. ) . 



a American Naturalist, XXIII, 1889, p. 134. 



Subgenus Olidosus Merriam, Proc. Biol. Soc, Wash., XIV, .July 19, 1902. 

 For "the alhirostris group" (=Dicotyles Gray, Proc. Zool. Soc, 1868, p. 4.5. 

 Type, D. lahiatiis Cuvier. Preoccupied by Dicotyles Cuvier, 1817— Tayassu 

 Fischer, 1814). 



