100 FOSSIL JAWS OF MACROPODIDJ:, 



P.^ with no large intero-posterior cusp. 



Molar crests rectilinear, wdth sharp angles and 



feeble links vishnu 



Molar crests curvilinear, with rounded angles 



and strong links cooperi 



]^.B. — As the lower jaw of H. minor, Ow., is unknown, its 

 place in the above scheme remains to be ascertained. 



Halmaturus vinceus, n.s. 



Upper molars with a group of tapering folds in relief on the 

 extero posterior face of each lobe, with the fore link nearly or 

 quite obsolete and the mid link feeble. Lower molars with a 

 vertical plate and folds in relief on the intero-anterior face of the 

 lobes and with a posterior basal protuberance which is sometimes 

 a distinct talon. Upper premolar broadly ledged posteriorly, 

 narroMdy in front. Lower premolar cuneiform in front much 

 dilated intero-posteriorly, J -shaped. 



Dimensions. 



Alandihdar. — In adults the entire series of cheek-teeth ranges 

 in length from 58 to 64-1 (5); the first four 45-3 (1); the first 

 three from 29-5 to 31-8; the first two 20-6 (1). The premolar 

 from 11-0 to 15-6 (8); the last four molars from 48-5 to 49'4 (3); 

 the last three from 34-0 to 38-0 (3); the last two from 25-5 to 

 29-8 (3); m.* from 13-1 to l4-5 (2); m.^, m.^, m.^ from 26-2 to 

 34-0 (3); m.i, m.- 23-2 (1); m.^ from 10-7 to 11-2 (2); m.^ from 

 12-4 to 13-1 (3); m.^, m.^ from 23-7 to 25-6. The width of m.^ 

 is from 9-8 to 13-0 (31). 



In young, p."^ m.^, m.-, m.-^ measure from 38-0 to 42 '0: mp.*, 

 m.i, m.2 from 32-5 to 33-0; m." from 13-0 to 15-5 (5). 



The anterior depth of the mandible varies from 22*5 to 32-6 (13); 

 the jDosterior from 21 -0 to 32*4 (17); the thickness from 15-1 to 

 25-0 (23). 



Maxillary. — The length of the full series of cheek-teeth is from 

 60-0 to 64-2 (3); of the first three 37*5 (1); of the true molars 

 47-5 (1); of the last three molars from 31-9 to 37-0. 



