Polyodon Measurements 
Length of Length of Rostrum as 
Total rostrum to body from per cent of 
Sources length {front of eyejfront of eye} body length 
mm. mm. mm. 
fll. Neat. Hist. Surv. Te 25 L540 9.7 
hi " " . 1746 Te 16,3 7.4 
th ‘4 2 P 18.5 10 Li? 8.8 
4 re vi 19 1.6 Aatae 9.2 
“ a" . " 19 Let Dal ext 9.8 
% f 7 ss 20 1 18.3 9.5 
‘4 4 ” * 20 re 18.2 9.9 
Borodin o7 8 29 oT oO 
‘6 oT Hee : 42 So ait 
“ 60 19 41 46.3 
Danforth 74. vs ah Ge eo 
Barbour 80 24 56 42.9 
Danforth 89 26 63 41 8 
“ 104 34 7) 48.6 
2 107 54 FR 46.6 
Barbour 130 46 84 54,8 
Danforth 140 48 92 Saet 
a 144 49 95 Lao 
: 170 58 1i2 51.8 
" Lvs 58 Ry: 49.6 
= 200 78 122 63.9 
Bit, at. Hist, Surv. 200 69 RWG Z 6 Si gt 
s n 212 ry 141 50.4 
7 ? . " 215 69 146 47.5 
vd : . . 220 A of 149 AT 9d. 
* , . Ks 2a0 78 147 5S ds 
4 ss , m 226 80 146 54.8 
» in . i‘ 227 82 145 56.6 
* 4 rp 229 fe) 154 48.7 
P bi * a 2340 79 Loud BS iG 
a m " ts re 78 15o 5043 
. yi % ° te fe 83 150 65.0 
* ' " am CoG B82 bo 55,6 
a x , * 240 89 ae 58 9 
“ - _ 7 241 nde 164 47,0 
" . : i 248 83 165 50.3 
2 5 250 92 158 58.2 
" ’ _ : p52 88 164 ee 
¥ 1 . y 255 87 168 51.48 
4 m 7 , 261 B89 172 Gis"? 
a 4 . Vs 265 92 13: 53.8 
“4 " ¥ x 266 85 181 47.0 
m ' ¥ ¥ 267 89 178 500.0 
‘a " “s . 270 92 178 517 
‘ , 4 ‘ gl ad 3 102 is 58,35 
