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Show 1868.] DR. J. E. GRAY ON THE SUIDAE. 47 Phacochcerus barbatus, Temm. Monog. i. 29. Phacochcerus haroja, Ehrenb. Symb. ii. t. 20. Phacochcerus eeliani, Gray, List Mamm. B. M. 185 ; Reichb. N. Pachyd. 36 ; Sclater, P. Z. S. 1864, p. 106 ; Gerrard, Cat. Bones B. M. 280 ; Owen, Odont. 549. Phacochcerus cethiopicus, Home, List Comp. Anat. ii. t. 38, 39. Cape Verd Hog, Shaw ; Penn. Phascochceres africanus, Desm. Mamm. 593; A. Smith, Cat. S. A. Mus. 16. Phascochcerus edentatus, I. Geoff. Diet. Class. H. N. xiii. 320. Phascochcerus typicus (African Boar), A. Smith, S. African Quart. Journ. 90. Phacochcerus cethiopicus, Fischer, Syn. Mamm. 424 ; P. Z. S. 1850, p. 78, 1860, p. 443 ; Gray, List Mamm. B. M. 185 ; Giebel, Saugeth. 236; Fitz. Sitz. Akad. d. Wissen. 1864, p. 39. Phacochcerus africanus, Harris; Kirk, P. Z. S. 1864, p. 656. Phacochcerus pallasii, Van der Hoeven, Nov. Act. Leop. xix. i. 171, t. 18 ; Owen, Ann. & Mag. N. H. 2nd ser. xi. 246 ; Odont. 553, t. 140. f. 4 (teeth) ; P. Z. S. 1851, p. 63. Phacochcerus aper cethiopicus, Reichenb. N. Pachyd. 35, t. 32. f. Ill, 112. Hab. Africa; Central Africa, Tete, &c. (Kirk) ; Guinea, Senegal (Adanson) ; Mossambique (Peters) ; South Africa, called " Kau-naba ;" Abyssinia ; Arabia. " Native name ' Jiri' or ' Njiri' at Tete ; in Sechuana, ' Kolobe ;' Sena and Tete; Batoka country."-Kirk, P. Z. S. 1864, p. 656. M. F. Cuvier divides Phacochcerus into (1) Phacochoeres a incisives, P. africanus; (2) Phacochoeres sans incisives, P. cethiopicus, Gmel. (Dent. Mam. 257, 213). He adds, "Notre dessin est tire, pour la machoire superieure d'un Phacochcere sans incisives, et pour la machoire inferieure d'un Phacochcere pourvu d'incisives, et nous ferons remarquer que les disques des deriiieres molaires du premier sont moins grands et moins nombreux que ceux de la derniere molaire du second, serait-ce encore un caractere specifique?" (Dent. Mamm. p. 213). The size and number of the disks on the crown of the last grinder depend on the age of the tooth and how much of the surface has been worn down. In the British Museum there are three skeletons and fourteen skulls or parts of skulls. The skulls of ten of these have two incisors in the upper jaw, and seven are without any incisors in the upper jaw, as marked in Mr. Gerrard's • Catalogue of Bones,' p. 280. Two of these skulls belong to skeletons of a male and female Phaco-chere that were brought together from Africa, and lived several years in the Gardens ; they are both destitute of upper cutting-teeth. Another skeleton of a female that lived in the Zoological Gardens has two cutting-teeth in the upper jaw; so the existence or nonexistence of the upper cutting-teeth is not a sexual character. The presence or absence of the upper cutting-teeth does not depend on the age of the animal; for there are specimens without any |