194 THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC. 
to a dirty white at the free, fringed extremities. 
The snout was quite pointed and 
evidently the upper jaw when closed fitted into a deep groove in the lower, which 
was considerably longer and projected beyond the upper.” 
and of the whalebone are those of LB. acuto-rostrata. 
The colors of the body 
Mr. Thompson made the following measurements on the Portland specimen : 
Total length, end of snout to forking of the flukes.... 
Approximate girth at deepest point (this could not be accurately taken). 
Pectoral fin (left side), length 
. greatest width 
“ 
ae “ 
oe “ec 
4é ae 
“cs “ 
“ “ec “ “cc 
“ec “ “e “c 
ev eievel ehsiete islets) sis) oie I 
distant from corner of mouth 
Dorsal fin, length obliquely 
height approximately...... 
distant from fork of flukes 
Caudal fin, extreme width, point to point 
from fork to anus 
End of snout to spiracles 
corner of mouth (upper jaw) 
in. 
ft. 
“ee 
WnNrhHDABNOHRNONWOMW 
MAWNH WOOHTN OF 
Oo 
While these measurements show a reasonably close approximation to those of 
B. acuto-rostrata given by various European authors, the latter unfortunately pre- 
sent so little uniformity among themselves that they are hardly available for the 
discrimination of closely allied species. 
The measurements of ten specimens from 
the coasts of France and Great Britain, and those for the Portland specimen and 
the New York specimen cited by DeKay in 1842 (32, 130), are given below. For 
convenience of comparison they are all reduced to percentages of the total length. 
BALZENOPTERA ACUTO-ROSTRATA LAC. EUROPEAN AND AMERICAN. 
3 : 
. [e} (sa) . 
eS s S a 3 a 
5 A eo} - K 4 = BS . C=) A 
Se Pelee ek ee le eile eel) eek Wee ts om 
se | ete) Be | So Se (soi ouelea “Saleen sees 
nH ial a i uve ie > q = 
Soir Sy arf os one & ic ual ze on pone a 
ee (See) SS | ge) 4g |) Be | Ag lee ee | lees 
2) Sa (Sty wo | Ze ) ge ie 5 oe 52 | oh 
a2 250 Or O68 se) 5° Zu S98 a5 Pry, ve iI 
SH | en | ve 52 as) ou Ps 2 oe FS dee |} ate Cio 
Ee || toe) FS aa | AS] of | Ge ES ao a PAS Seel 
a ba a re) 5 ov ey 0 5 2 5 
i o o ot z= RE > oo 3 a 7" 
0 > to] by a 1) As y 3 PY 
: a ° Oo = (o 
7) E A = 
an —= 
BA DOasaArAnonaec ose gad $ adol. 9 Q jr g jr. Q jr. ie jr. 2? 2? 
Se otdaee hn ae aoe 28' 4"!| 24' 6" | 21'8"| 17'6 ofa te Cyl Was yc roe vena! || fel coy! sasha 
% & % % % % % % % 
opomtasoad Soo8 20. 19.6 ar 
“* blowhole..... Uses lh odes |b Gaceall 96 13.6 : 13.5 
SS ipectorall yas. Sat coos | ace pte 30.4 ao. || riby 
““ back of dorsal.! 70.0 | 74.6 | . .. | (78. 74.8 cat | ee PECE MT eect cel See(o) 
ip lower jaw to corner mouth..} 16.5 | .... ee 46) eure 19.5 ?|21.2 
Length of pectoral (from axilla ?)} 15.3] 9.3 | Date (@a58) pret |S 2565)" pro aire 
Greatest breadth of pectoral. .... BTR BE ircmers 3. as ee || sd 3.8 
Height of dorsal... . SA epeenseree, 3.5 Alege corer 3. Neye EW! Gosh | ypu 5.5 | 4.44 
Flukes from tip to tip.......... PAC) 53, Dasa! sae 27,0) |) 20.0%) 27-3) || 26:4u\e7) 
‘Straight, to posterior margin of flukes. 
3 Ant. border, curved. 
4French measure. 
5 Length ‘‘ external to integuments.” 
(From axilla, straight = 9.3%.) 
5 This measurement must be erroneous. 
7To ‘extremity of tail,” straight; along curve of 
back =13) 83”. 
5 Length of ‘‘inner side.” 
