PROCHEDINGS OF THE NATIONAL MUSEUM, 
636 VOL. XXXIV. 
viduals recently collected from farther up the coast (Siak River, see 
map, page 623) have the underparts white or whitish, and continua- 
tion of the hght underparts extends down the inner side of the hind 
leg as a narrow hne to the heel, about the same as it does in the west 
coast series of 2. hypoleuca. This series of east coast Ratufas averages 
smaller, in both external and cranial measurements, than the series of 
west coast specimens. Some of the specimens, especially Cat. No. 
144167, from Makapan are very close to typical 2. hypoleuca in both 
size and coloration, so that ?. catemana must be considered as a sub- 
species of R. hypoleuca. None of the specimens show any approach 
to Ratufa arusinus. 
For measurements see table below. 
Measurements of Giant Squirrels from eastern Sumatra. 
8 it is] S) A 
bB a=) ~ 4 (o) 
‘S = a yee r) 
Ko) pe | 2a | sd | es 
. Num- ou 5 ey |} SES 
Name. Locality. ae Sex and age. fe; 2153 | tarsl Ih ag 2S 
I. bl oo “4 
3 % | ge = © | wo | & 3 
Sie 1s 18 ie Ts 
q 
Sieh o N 5 
mm.|mm.| mm.| mm. |} mm. | mm. 
8. (ONMOE,  o|) ARO BOs sc coosocdéscce 143359 | Male, adult.....-- 868 | 472 | 88 71.9 | 44.6] 29.1 
5 ID OF eel oe OSs Res 143360 |....- GO See eee 350 | 452 | 83 69.7 | 41.7 27 
DOR eran es GOSS et ae eee ISRO lococe OS et ee ae 360 | 440 | 84 69.6 | 45 28.8 
DORSS ee. oor OL e aes 14336208 | See (6 Wc yes cy ua rs 370 | 460 | 81 69.3 | 41.9 26.8 
IDXOS se eellewer COR Res ete NEBR |ledaos GOR Nice eee eee 460 | 85 69.3 | 43.1 28.9 
ID) Oe seas GOR ee Bee a eae ae 143364 | Female, adult..-.-} 590 | 455 | 90 72.4 | 44 D7, B 
IL) OAR reg = COV Oyen mie Rs AEA a le IZBRO5 locone PO KG)8 She ee ee 375 | 480 | 86 73.7 | 44 28.4 
DO; esa eps CO es He eta 143366 |... -- GOR one 370 | 455 | 85 70.6 | 45 28.9 
DOR MEE | BREA CLOR Se Reh ne BORe ena ae NASR) eo ooe COM ep one oe 355 | 460 | 84 71.2 | 44.3 28. 2 
DORs eal Selene, IROOM 6 cocoon acs 143368 | Male, adult...._.- 3860 | 483 | 83 70.2 | 44.7 27.9 
1D) On ee Be GO ee Ee eerie 143369 | Female, adult-..-.| 365 | 455 | 86 CONon| aon omleZo ne 
15 CHUSHOUS 6 o|| ATH BAN s ococooossoose 143346 | Male, young adult.| 345 | 405 | 81 63.7 | 37.8 | 24 
1D) Offa eas ess CORT AS de 2) tae Le he 143347 | Male, adult....... 335 | 420 | 82 64 38. 7 25.9 
1D OF Saka ee OKO ae rae uC 143348 | Female, adult...-| 355 | 400 | 81 66565 |P4A2N on ei 
ID XO} S ceca Meee OSA a5 Ses San ae 143349 | Male, adult......- 350 | 400 | 81.5 | 64.2 | 40.4 25.8 
SD) Oa Rea ee GORASt eae eee 148350) |. . <=. GONG Se ee 355 | 365 | 84 64 38.9 Dow 
DOR ae a eee COE hes ee ee oes CNASS5 an | Seer GOALS eee 354 | 405 | 81.5 | 65.9 | 40.8 25), 7 
I) Oe a ee CKO SSpers Sree eA IABEHY loooos Cho eee ee ete 350 | 400 | 80 66 40 PA}, 2 
IDO eeaseslease QOn Aa aes ets 1433530 eee Oe eee -350 | 440 | 82 67 41.1 26.8 
DD) Ogee es ee COLA a eee 143354 | Female, adult....) 310 | 390 | 82 67 40 25.8 
IDX Opes aes Choma hameem acu eee 143355 eee young | 310 | 405 | 88 C257 Stead | 2320 
adult. 
DOSS ccsualospas GO SaR ation eais ae 143356 | Female, adult ---..|.340 | 450 | 84 65.8 | 39.3]. 25 _ 
iD) ORAS | EEN GORE: Sete ect Ree IABRINY Ilococe GOL eee 340 | 465 | 83.5 | 66.1 | 39.9 | 26.5~ 
LD) OF eee Oa Re ere eee NABER? |e coo COP serene 350 | 445 | 83.5 | 65.1 | 41.8 26.8 
R. catemana..| Little Siak River....-- 144159 | Male, adult....... 315 | 350 | 74 60 36.4 | 23.4 
LD) OFS isle ee GORE: eee 144160 |....- OSB At eae 317 | 383 | 78 Oi Cillesooce 2501 
ID eeeaaae esas CORSE eee 144161 |...-. COs ae 325 | 410 | 80 63.4 | 39 26. 2 
IDOSE Sess ieee (6 (Gye ee ets me 144162 |..... CORA sepereacn 325 | 410 | 80 63.2 | 36.5 25. 8 
IDO eset. Rae. COS eee ans eee '€144163 | Female, adult... -.| 342 |e23& | 80 62 40 25. 4 
iL) OR ese Sungei Mandau........ [a4 A164 el © eee 320 | 410 | 78 64 39.4 | 26.7 
IDOE Ae Soe Miailkapanme-ccecrncsee 144165 | Male, adult......- 315 | 360 | 80 Gil} lagooss 25 
ID) Oe erece4 |e CO aed Sr aan 144166 | Female, adult... -| 322 | 380 | 80 62 38.2 | 24.8 
Dose rash hose Ona --.-.-..-.|U144167 | Male, adult......- 318 | 400 | 80 64 37.7 24.8 
Dota see KOM pelea an eee ee 1144168 | Female, adult...) 315 | 385 | 75 G95) || aisha) |) PASS} 
1D) Oe re ee GOR) eee 144169 | Male, adult......- 320. | 370 | 78 61 38 24, 2 
IDOE onseellaeesoe GOt Aaa es as 144170 |...-. dO. eee 330 | 390 | 78 62.5 | 38 25.3 
IDOsdceorc Kateman River......- 12312355 |e (OKO) aR eaten OR 310 | 390 | 77 61 37.4 | 24.6 
ID) Ose oe al ere CO Ba a eae 0123124 |..... COKE A ee 320 | 385 | 74 61.9 | 38.5 24. 6 
DOE alse COLONES ame ees 123125 | Male, immature...) 275 | 380 | 73 Wiel Wy shyt |) 2sbts 
DOL sea GOS RAs a eee 123126 | Female, adult... -.| 310 | 375 | 75 60.5 | 38.3 | 24.4 
(DO; Fae Sale See CO Bx ie ey eee WRIA oocod GOER Miers. 325 | 880 | 78 62.3 | 39.3 25. 6 
a Collector’s measurements. 3 
6 Measured by writer after relaxing feet in water for forty-eight hours. 
ce Type. 
@ Underparts white or whitish and inner side of hind leg marked with a narrow extension of the white 
of the underparts to the heel. 
e Imperfect. 
