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Show 78 MR. O. THOMAS ON THE [Jan. 3, Mungooses except the present species and those of the very distinct genus Crossarchus. The absolute sizes of the molars in Bdeogale are, however, as is shown in the table of dimensions, m u c h less than in Ichneumia. The following table gives the dimensions of the last upper premolar and last molar of the species of Herpestes, with the percentage of the latter to the former. The letters correspond to those denoting the different skulls of which the measurements are given above. Where the teeth belonging to a skull not previously referred to are measured, an asterisk is inserted instead of a letter. b... c... c... H. gracilis, typ. var «... b... *... &... „ „ var. melanurus, c... „ „ var. badius ... d... e .. ,, ,, var. ochraceus, /... b... c... d... „ „ var. robustus ... c... /••• b... H. (Ichneumia) albicauda, «... b... c... d... *... *... P.M4. mm. 110 10-8 10-3 120 12-0 7*6 8*0 8-0 8*1 7*5 7*6 7*4 7*1 67 12-0 11-9 13*2 11-8 12*0 13*2 9'0 90 7-0 9-9 9*4 90 90 90 90 M2. mm. 50 4-9 50 5-4 5*5 3*7 4*1 3*8 4-5 3*5 3-8 3*5 3*9 2*8 71 (1-7 7*6 7*2 70 7*5 4-0 3*9 35 7*1 69 7*0 7-5 7iS 7*0 Percentage. 45 45 48 45 46 48 51 47 55 47 50 47 55 42 59 56 58 61 58 57 44 43 50 71 73 78 83 84 77 1 |