THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC. 253 
BALAINA GLACIALIS BONNATERRE. EUROPEAN AND AMERICAN. SKULL. 
S a 
a ie Pee £ 
om B® aS a ‘ og Hare > 3 
BS | pecneteel gels a) dela: | Ele. 
Sa |eo2| e282 |Sot| Ges | eee | Oe | sh a || gas 
Ree | Re) Re Pe | ce | ee | ge | es | ein 
gag | gas | sad |oms | fis | sis) Sa | Et4) = | ges 
Bese) We seh || Begsh |) Fer ers Srey 3 ga) ge [ers 
I 3 a5 Ase ie go8 fa £5 gee Ste! | a ee 
Hee | Gao || HGS. AI || Ces | ESOS a] AL | asc 
SSVANMGIAGS. . cao cggacons0e secrmoone 6 é 9 im. g 2 g jr. 
Motallengthiof whale... --. cocci... AG pele GP ap kes eka! pediatric eallecooellao sons 24/10" 
us S| “SO OCIRGIGICT NA Gare eRe emanate ome een cel tacks cial | aeeemme STNG) | avetererseal Sevetstes a flese ereion| Oeerscr 
Length of skull (straight)............ 154.3" | 153.9" | 150.7” |133.0'| 113.4’ | 89.3" | 87.1’ | 90.0" G 63.0" 
% % % & % % % % % % 
Greatest breadth at orbits............ 65.1 62.9 65.3 63.6 69.7 | 72.2 Fonz || teiekkey Ilo gocac 64.4 
Length of rostrum (straight)..........).....-- 79.2 FST EN TERT nations leeoess (Fe ey aol leon cheval | rercn ered erciab ee 
SAGIIN @}) WOM Nee pepelel ES GGAGore|laoooouellododoollopnoood ls qadeal lsssocesl nodes WORE | ONS Sonoullaconen 
Menpthyotmnasal ss varepoyat-tl=telsisispstere efeleis |isce'e7= =iele)| aceelelal CWP. Nemeaain 6.77] 8.9 g.0 8.1 7-9 7.5 
Breadthiof 2masals distally. «cie)-1=/<\|\a6/1=/\el0l] (s1ete< (01 TASH Nise acl) aya / NN Mkts) 9.7 9.4 9.2 8.7 
ub Of Gili POUE KO) POMoogoollangoabullscoses|losddoonlloaande CaM lloaencd|loagoo's||incone||soc.caallocoone 
Length of mandible (straight). ....... 97.5 OSES hl errerereine 94.3 | 100.0 CP HON Iliac). Nise s.c0d 102.2 | 88.17 
tree = (on curve), ...... WO. O32) 15 Gao006 EO2{9) || TO2.5)> || TTOG | |eeyyen (ere tee 110.1 | 92.27 
Depth “ ee EL Cara Lee reece ter)| | acvausveteral lsvertvere=s | cverexetaveieh] erersiwvne Fev iicaa itr yn exeneses | acon aereteceten| tiers ae 
End of nasals to end of rostrum (on 
CUIAE)S a dotGiot OUD HOO RRO BEGOCO a] nIEnDal IoocerEel Koocooinol lemanan CPA GGHeY | GSEs la86 06 laoncoe 66.2 
J , f m x 2 3 
: all toe >S a| esc 
a -3 oa “lo 2 | 83s 
29| 22 | 2 | 22/5 | 7h 
fy || SE |) ED) ete featl| cect || tet 
3 S65 | #3 | 285] $86 |2°2 
<8) 2. | 23 | bee] dee] 28s 
o 2 bo E sn] Bld |] Ben 
S82 | 56 | 8 | £53] 680 | S28 
Seng AMMA Opera ater alate oteicre Stators -eieTel nieve eleisiaislevelsloaie etersinisiemetetotereteivetetsiesele Ouaden|) mere ae as | ake 
Mroralmlenihtotew halen cll ej = cles) sos/alcfersraniere sich aiiateeieicteisitetelsiey= Geli Coen sopooud laccade 40! 4eilsieitaes 
gs i EAC ORIO Wenner pocmodeadsuecoCuobnaad sbococonaasrae 44° 9” | 44'9' 137'0" +} 45' 3'935' 79] 37’ 0” 
ene pOnores Kiln (GhrAt ot) mretsteterelaaler ciel iene tsietststelerstat-Pelekslsietelteleteleriatersrehsr 152.0’ | 150,0"| 128.0" | 124.0'/ 114.5" |96.5" 
% % % % % % 
Greatest bread thyatiorbitss cisis.ciec:eac1a1ssovsteyarersrsraveie) vevevo'e o)sjesele elelararetejocelecs 66.1 | 62.0 | 66.0 | 68.5 | 64.6 | 68.1 
Wenpthpopprostrum (SLASH) bre siessis ele a) Woisis ones clei eteieiseasoete erie icine oe 80.9 | 79.0 | 76.6 | 78.2 | 81.3 | 78.8!° 
[BreadcheorarG strive Gori lle s acy sists ely sie greg -ntoseilelvis 'o eiate tet alilers fete aiatetereter<caunlllieceielelacaca 9.3 DAT tok totes |heers yore Gall hence eyave 
HBe ne tht ofan asa Sopris svayeys cl astaio: ay (aye, ete: h sPohsi avai ales] eacecnonelacaxererelersiatshststs = 5.1 7.8 7k 7.3 7.4 8.3 
Bread thuaipa nasal Stoustalllliy-cvccreyceteleleiorerctch evavcicts ercietsverctey se rsteretatoleteletejeressi- 6.6 | I1.0 Te? 6.5 8.3 7.8"! 
S SeROUDIE PON EALOs POI tat atoelate inte iarsorw ol eis sishetsral-eeroh tereelerciereraiayateiele 5.4 4.8 5.8 | 106.0 Gai) 6.4 
ILC In OF TAM NE (Gierea hoc soonnsasonpoooudoocoDogS0enuG5-codDE go.I | 98.0 96.8 |110.5 | 93.4 | 95.4 
ote oat hi (C@ GING). cenaosesoon coocooseccoubaccdguceans 100.0 | 107.0 | 108.6 5.3 |101.3 |105.7 
Depth ‘ He BELA ALS e sie cls arel sa-z.cree Gevnrereca eberaual a oheister eternal ars iaia\ ae. His 6.6 8.5 6.8 Wee) 
Eymndofmasals) tolendofrostrum'! (On Curve). oc-\--- oe) -le)eietsie ieee steele =~ 76.6 | 71.4 78.9 | 83.8 | 80.0 | ..... 
' From ‘hind angle,” z. ¢., base of rostrum; hence smaller. * From figure. 5 Least, from figure. 
+ On comparing Gasco’s figures it will be seen that the rostrum in the top view is much too short. 5 Straight. 
5 Total length given only approximately by Capellini ; hence taken from Gasco, 2.27 m. 
7“ From point of meeting of internal lateral margin with inferior margin of the condyle” ; hence, a smaller per cent. 
® Caudals spaced too much, * From Manigault. 10 Least. 1 Twice %. 
