74 MR. ST. GEORGE MIVART ON HEMTCENTETES [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 parocci- 

 pital 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. 

 Hub. Hayti and Cuba. 



POTAMOGALIDiE *. 



Potamogale, Du Chaillu. 



Dentition: I. §=§, C. £5, P.M. §=§, M. g. Skull not cylin- 

 drical ; broadest between the glenoid surfaces ; no zygoma ; no 

 postorbital process ; no ridge or process in front of the orbit ; tem- 

 poral fossa large ; no pterygoid fossa ; no tympanic bulla ; parocci- 

 pital processes directed backwards ; nasals united ; molar imperfo- 

 rate ; 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 alisphe- 

 noid 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 com- 

 plete and distinct ; scaphoid and semilunar bones separate ; no os 

 intermedium ; pubic symphysis very small ; tibia and fibula anchy- 

 losed together below ; five digits to each extremity ; no caecum. 



Hab. Old Calabar. 



ChRYSOCHLORIDjE f. 



I. |^j, C. J~j, M. ~. Skull very broad and 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, l a Classa da Academia de 27 d'Abril, 1865, Lisbon, described 

 under the name Bayonia velox; Peters, Monatsbr. Akad. W. Berlin, 1865, 

 p. 286. 



f De Blainville, ' Inseetivores,' pis. v., via., viii. & is. ; F. Cuvier, 'Dents des 

 Mammiferes,' no. xviii. ; Owen, ' Odontography,' pi. ex. fig. 1 ; Wagner, Schreb. 

 Supplem. ii. p. 118, v. p. 579 ; Peters, ' Eeise nach Mossambique,' p. 69, tab. xxii. 



, 



