14 JourNAL OF COMPARATIVE NEUROLOGY. 
Ratio: 
Brain-Wt 
No QUADRUMANA Sex|Body-W’t} Brain-Wt| =I! 
ey Grams. | Grams. 
5|Jacchus vulgaris, _ 204 9 23 
6 “ “ — 150 Yi 21 
7 “ “ nae 207 7 27 
8 “ “a = 105 7 15 
Midas ursulus (rufimanus) 9 361 24 15 
Lemur bruneus, Pa 1505 26 58 
Nycticebus tardigradus, By 612 13 51 
Carnivora. 
1/Ursus americanus, g| 25990 248 105 
2 “6 a6 & pete. AO OA 192 eos 
1|Nasua rufa, juv.| gf 719 35 20 
2 “6 “6 juv. a Ae ea es 30 pa 
3 “é ac 2 3200 41 78 
Alte a? as ; ce) 2165 32 66 
Gi a juv.| 9 1127 29 39 
Lutra vulgaris, gt 2215 39 57 
Bassaricus astuta, ae 842 19 44 
1/Vulpes fulvus, juv. Be 3070 49-5 61 
ae “ juv-| Q] 3458 53 65 
Felis tigrina, Q 1989 63 31 
Zalophus californ. (Gillespie) | —]--------- 335 = «|--------- 
Rodentia. 
Arctomys monax, 2 3051 II 277 
1|Dasyprocta agouti, >) Paeenne ee 10) lene 
2 . f z 1803 19 95 
6 ‘6 ‘2 ae 2935 21 133 
1|Cynomys ludovicianus, é 392 7-5 52 
2 “a “ fe) 504 7 72 
Ungulata 
Equus caballus, o) Ee ae 51925, |= seneee 
Dicotyles tajacu, 9 7930 74 107 
Auchenia glama, 2 (eee 222). ||-=asseeee 
Edentata. 
\Myrmecophaga jubata, | 2 | 18940 84 225 
Tamandua bivittata, 2 930 | 21 | 44 
Marsupia lia. 
Didelphis virginiana, = ee ee | ; Mb osc 
{Petrogale xanthopus, | 25 2441 23 | 106 
