ON BELMULLET WHALING STATION. 171 
Taste VII,.—Balenoptera musculus (L.). 
| Average Per Cent. of ‘Total Length 
Measurement - ~- 
European (Irish) | American 
Tip of snout to centre of eye aay ao (38) G94 (10) 20-6 
Tip of snout to centre of blowhole . (35) 17:3 (8) 18-4 
| Tip of snout to posterior insertion of | 
| pectoral fin . | (85) 32:3 | (5) 33-2 
| Tip of snout to ‘posterior insertion of 
SS a eee a bmn ree (24) 758 | (8) 77-1 
| Eye to ear : ig. Set ogee (28) 4-7 | — 
/ Notch of flukes to anus. see Gye ee (28) 27-3 — 
| Notch of flukes to umbilicus 4 | (27) 43-6 -- 
| Length of pectoral fin (tip to anterior | 
| insertion) . (36) 10-4 = | 
Length of pectoral fin (tip to. posterior | 
insertion) . | (36) 80 | _ 
Greatest breadth of pectoral fin . J ee | oe(oOke ora (lO) | 22:0 
Vertical height of dorsal fin be et. (ey S27 ee 
TasLe VILU.—Balenorpiera sibbaldit (Gray). 
No.2 | -No.3 | No.4 No. 5 
Measurement 
MEST SE EAT Tee aT : 
Ft. in. | Ft. in. | Ft. in Ft. in 
Total length .  . .| 8 O | 8 O | 64 6 70 #0 
Tip of pad to centre of eye its, 12.) Abn Gendt be iB 13-98 
| Tip of snout to centre of blowhole | 13 6 15 0; 10 8 12 0 
| Tip of shout to posterior insertion | 
| of pectoral fn .  . : 25 8) 1) 2855835 ddd 6 23 29 
| Tip of snout to posterior insertion | bass 
RU TES ws saan |, “Caged 62 5 47 4 53, 9 
Eye toear . oo ORE 3 li | — 3. 4h [38 
_ Notch of flukes to anus. | 22. 9 | 22 11 18 6 | 18 113 
| Notch of flukes to umbilicus . | 35 8 | 36 6 28° 7 | 29 ART 
Length of pectoral fin (tip to | | | 
anterior insertion) . WLIO... Dol Del Biche Ope) 8 ll 
Length of pectoral fin (tip to | ! 
posterior insertion) . 5 | 8 1 ti 4h igang Troi 
Greatest breadth of pectoral ga [8 Seeae 2 11 Zi to 2 5 
Vertical height of dorsal fin. . 8} | 10 63 63 
Number of breast folds between 
pectoral fins . F 70 70 74 78 
True compares his percentages with some compiled by him from 
different European specimens, but the largest number of individuals 
giving a corresponding average is eight. He finds that his two series 
of percentages agree very well, but it appears that even here most of 
the average percentages of the European specimens tend to be lower 
than the corresponding figures for the American animals. Unfortu- 
nately all the figures in the first column of Table VII. could not be 
compared, as True does not give the percentages for the corresponding 
measurements. The breadth of the pectoral fin and the vertical height 
of the dorsal fin correspond very closely in both columns, but the first 
four measurements al] show a difference of about 1.1 per cent. This 
