ItiO BULLETIN 56, UNITED STATES NATIONAL MUSEUM. 



bones; and an odorous gland occupies the top of the rump. Verte- 

 bra- C 7. I) 14. L 5, S 4, C 7. 



Professor Cope" refers the known species of Tayassu "to three 

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

 He places the Brazilian Sus tajacu Linnaeus in Notophorus Gray, 

 and the Texan Dicotyles angulatus Cope in Dicotyles Cuvier. On 

 the following page he describes what he considers to be intermediate 

 between Tayassu tajacu and T. angulatum, from Costa Rica, and in 

 conclusion observes: "It appears, then, that the latter {Tayassu 

 angulatum | must be regarded as a subspecies [of Tayassu tajaca \ 

 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 Dicotylince, of the family HippopotamidcB, and of the two 

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

 subfamily 'Digits three' should be supplemented by the words 'on 

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

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

 4—3 instead of 3— i. 



Subgenus TAYASSU Fischer (1814). 



Tayassu, Mekbiam, Proc. Biol. Soc. Wash.. XIV. p. V22. July 1!). 1901. Re- 

 stricted to the tajacu-angulatus group." 



Notojihonts (Jray. Proc. Zool. Soc, 1868, p. 4."'.. Type and only species, »s'//.s- 

 tajacu Linnaeus. Preoccupied by Notophorus Fischer, 1817=Tayassu 

 Fischer, 1M4. 



Tagassu, T. S. Palmer, North American Fauna. No. 23, 1004, p. 955. 



Characters. — Smaller than Olidosusf 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. Aa) ; 

 palate narrowed between canines and molars, with 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, 

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

 lete. (Fig. 5a.) 



TAYASSU ANGULATUM (Cope). 

 TEXAS PECCARY. 



Dicotyles angulatus Cope, American Naturalist. XXIII, Xo. 266, Feh- 

 ruary. 1889, pp. I4ii, 147 (original description); March, 1889, pp. 

 134, 1 35. 



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



\i i Synop. Mam. N. Am. I. 



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



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

 For "the albirostris group" (—Dicotyles Gray, Proc. Zool. Soc, 1808. p. 4."». 

 Type. 1). labiatus Cuvier. Preoccupied by Dicotyles ("uvier. 1817 ==Tayassu 

 Fischer, 1814). 



