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Show 1868.] DR. J E. GRAY ON THE SUIDAE. 43 Sus babirussa, Schreb. Saugeth. t. 328 ; Blainv. Osteog. Oneuligr. t. 2 (skeleton, $ ), t. 5. f. 7 (skull and teeth). Babirussa alfurus, Lesson, Mamm. 338; Gray, List M a m m B M 185 ; Sclater, P. Z. S. 1860, p. 443, t. 83 (from life) ; Gerrard, Cat. Bones B. M. 279. Porcus babyrussa, Wagler, Syst. 17; Schreb. Saugeth. Supp v 509 ; Fitz. Sitz. Akad. d.Wiss. 1864, p. 43 ; Giebel, Saugeth. 232. Porcus babirussa, Reichb. Nat. Pachyd. 57, t. 54. f. 199, 197. Aper in Jndia, Plinius, Hist. Nat. vii. 52. Horned hog, Green, Mus. R. S. 27, t. 1 (skull). Babyroussa, Bontius, Ind. Orient, t. 1. fig. Babyrussa, Jacob, Mus. Babi roesa, Seba, Thes. i. t. 50. f. 2. Babiroussa, Buffon, H. N. xii. 379, t. 48. Hab. Borneo; Malacca?; Celebes; Ceram; Timor; Java; Sumatra ; New Guinea; New Ireland (Fitzinger). Fam. 2. DICOTYLIDAE. Teeth 38 :-Cutting-teeth 2~ ; canines j^-; premolars ^-3; molars ^f. Tail short. Teats 2. Chceropotamidce, Owen, Odont. 559 (not characterized). See description of dentition (Owen, Odont. 560). Dicotyles, Cuvier, Reg. Anim. i. 237, 1817; F. Cuv. Dent. Mamm. 210, t. 86; Owen, Odont. 559 ; Baird, Mamm. N. A. 627, t.; Fitzinger, Setigera, 429, 1864. Notophorus, Fischer, Zool. 1819. These animals do not breed with the Domestic Pig, or any of the genus Sus. They have not been domesticated, and very rarely breed in confinement. The two species, a male (Dicotyles labiatus) and female (Notophorus torquatus), bred together in the Zoological Gardens, 1864 ; they have only two teats, and have two at a birth. Mr. E. Gerrard, in the ' Catalogue of Bones in the British Museum,' has pointed out that the Collared Peccary has six and the White-lipped Peccary nine caudal vertebrae (p. 289). M. F. Cuvier, in 'Dent. Mamm.,' observes that his description of the teeth is taken from the Peccary (N. torquatus), and the figure from the Tagassu (D. labiatus); and he continues, " The hinder molar of the lower jaw of D. labiatus is terminated by a single tubercle as large as the others, and not by three small ones."-Bent. Mamm. 211. I cannot see any difference in the form of the crown of the last grinder of the two species. The teeth, like the skull, are much the largest in D. labiatus. 1. NOTOPHORUS. Skull-side of the face in front of the orbit dilated, spread out, deeply concave beneath ; the longitudinal ridge on the cheeks nearlv |