Lig REPORTS ON THE STATE OF SCIENCE.—1912. 
TanLe IX. —Balenoptera sibbaldss | (Gray), percentages, 
Measurement se 3 es 2 | oh a xe) 4 
| Ft. in. | Ft. in, | Ft. in, | Ft. in. | 
| Potallengihe We ia eh SE Ome: Sd alee 0 64 6 
een abled tense 1s -ahagres ae % 
| Tip of snout to centre ofeye .: 195 | 188 19-7 19-3 
| Tip of snout to centre of blow- | | 
hole; 3.’ fee ned ame Us Sa Pr | 16-5 
{| Tip of snout to posterior insertion | 3 
| of pectoral fin . . | 341 1 309° |° 33-9 | 33-3 
Tip of snout to posterior insertion . : ; Po 
of dorsal fin S Mp dieses Be aS. of deo ee 73-4 
Eye to ear : Seer _- ‘ 4:7 5-2 | « §2 
Notch of flukes to anus. oan ce 27-3 he man mi is Near ve 
Notch of flukes to umbilicus -| 434 | 480 | 423 + 443 
Length of pectoral fin (tip to | ) | 
anterior insertion) . f * 118 94 12:3" | 12-7 13-9 
Length of pectoral fin (tip to | 
posterior insertion) . 88 | 97° | 10-0 116 =| 
Greatest breadth of pectoral fin. 3-5 3-4 3-4 37 | 
Vertical height of dorsal fin ber 0:99 | 0-85 | 0-77 0-84 
* Tanne a: -—-Balenoyera sitbaldii (Gray). 
S| 
Average Per Cent. of Total Length | 
a | 
Measurement | European (Irish) _ ‘Spechag y | 
} = (True) 
Tip offs snout to centre of eyes we SO - (4) 19-3 21-6 
Tip of snout to centre of blowhole . (4) 16-9 - 12-9 
Tip of snout to posterior insertion of . 
pectoral fin . (4) 33-0 34:3 
Tip of snout to posterior insertion of dorsal 
fin . « OB vay Meee” ten Sock ee (4) 74:5 76-9 
Eye to ear - Te eee te is (3) 5-0 ' —_ 
Notch of flukes to anus" : : ane eeed (4) 27-6 i — 
Notch of flukes to umbilicus p (4) 43-2 : -- 
Length of pectoral fin (tip to anterior | 
insertion) ; | (4) 12-7 — 
Length of pectoral fin (tip to. posterior { 
insertion) . en) } (4) 10-0 { 11-1 f 
Greatest breadth of pectoral fini |; aR. =) ee ators | 3-8 | 
Vertical height of dorsal fin Siders et (4) 0-86 0-96 | 
cannot be a question of units, as the method of taking percentages 
obviates this difficulty. - 
It certainly appears as if the individuals of what is probably one 
species on either side of the Atlantic differ somewhat more than True 
supposes in their general proportions. In discussing the question of 
proportions in this species it is interesting to notice that the proportions 
in those whales examined which had fed on herrings, viz., Nos. 8, 9, 
10, and 48, Table V., do not differ appreciably from the figures obtained 
in the case of indiv iduals which had fed on ‘ krill.’ 
2. Balenoplera sibbaldii (Gray).—In Table VILL. we have a similar 
