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Show 74 MR. ST. GEORGE MIVART ON HEMICENTETES [Jail. 17, what constricted between the orbits; posterior margin of palate thickened ; a ridge in front of the orbit; mesopterygoid fossa not ending posteriorly in an excavation of the basis cranii; no paroccipital process ; praemaxilla somewhat produced ; ascending ramus of mandible deeply concave externally; condyle much transversely extended; a sharp process from the inferior margin of the mandible some distance in front of the angle ; large glenoid foramen ; posterior palatine foramen moderate ; lachrymal foramen just in front of the orbit; first upper incisor much larger than the second ; canine very small; apex of" second lower incisor received into a fossa. Fifteen dorsal vertebrae ; a scapho-lunar bone. Hab. Hayti and Cuba. POTAMOGALID.* *. POTAMOGALE, Du Chaillu. Dentition: I. ~, C. JE_, P.M. §E§» M. g. Skull not cylindrical ; broadest between tbe glenoid surfaces; no zygoma ; no postorbital process ; no ridge or process in front of the orbit; temporal fossa large ; no pterygoid fossa ; no tympanic bulla ; paroccipital processes directed backwards ; nasals united ; molar imperforate ; very large precondyloid perforations; a small glenoid, but no distinct carotid foramen; foramen rotundum one with spheno-orbital fissure; optic foramen very small, but not forming a long canal; a suboptic foramen ; infraorbital canal short and wide ; no lachrymal foramen ; a true alisphenoid canal; no external alisphenoid canal; upper true molars each forming two very narrow and approximated triangular prisms, the two external principal cusps of a quadricuspid molar being represented by two distinct prominences ; lower true molars with rather large posterior processes. Sixteen dorsal vertebrae; caudal vertebrae numerous; lumbar processes small; decided hyperapophyses; scapula without a metacromion ; no clavicles ; no supracondyloid foramen to humerus ; ulna complete and distinct; scaphoid and semilunar bones separate ; no os intermedium ; pubic symphysis very small; tibia and fibula anchylosed together below ; five digits to each extremity; no caecum. Hab. Old Calabar. CHRYSOCHLORIDiE f. I-|_7;. C r-i' ^-,3^_' Sku^ very broacl a«d high, tapering sharply forwards; greatest breadth between the posterior roots of the zygomata, which are complete and rather deep arches; no post- * Prof. Allman, Trans. Zool. Soc. vi. p. 1, pis. i. & ii. ; Prof. J. V. Barboza du Bocage, la Classa da Academia de 27 d'Abril, 1865, Lisbon, described under the name Bayonia velox; Peters, Monatsbr. Akad. W . Berlin 1S65 p. 286. t De Blainville, ' Insectivores,' pis. v., vii.. viii. & ix.; F. Cuvier, ' Dents des Mammiferes.' no. xviii.; Owen, ' Odontography,' pl. ex. fig. 1 ; Wagner, Schreb. Supplem. ii. p. 118, v. p. .">7'.i; Peters. ' Reise nach Mossambique.' p. 69, tab. xxii. |