842 THE AMERICAN NATURALIST. [Vor. XXXVI. 
TABULATED MEASUREMENTS OF FINS AND GRAVITY CENTER 
OF CESTRACION EMBRYOS. 
(By C. H. BROOKOVER.) 











From Snout Tip To 
OTAL ANT. Post ANT. OST. 
LENGTH. | CENTER | Marc. | Marc. | Marc. | Marc. First | SECOND 
GRaviry.| PerEct. PECT. VENT. Vent. | Domsar. | DORSAL. 
Fin. Fin. Fin. Fin. 
mm %o % % % % % %o 
M 14.5 m 314 38— cm a au ste 
2 15 — 32 40 — — — — 
3 M I 27 a m" i s 
no spine no spine 
4 20.5 ses 26 38+ 42+ 49+ = 
no spine no spine 
5 21.5 inq: 25— 324 41— 484- 37+ 6 
no spine 
6 24— mae 24+ a= wt 44— 5 58+ 
7 24 = 28— 37— 45— 52+ 62+ 
8 26.5 — 26+ 324 40 4- 48— eges 
9 26.5 31 -— 33— 414 48+ 3 57 
s 27 28 24+ 30 37 44+ S 53 
i 26 — 25— 31— 39— 45+ 3 53 
A T 5 Sra 24+ = + 38+ 46— 32 57 
2 o o 
: : a vent tent 
14 31 — 23 31 9 45 32 55 
5 3r mee 25 31 7 43 32 
16 32.5 — 24 30 8 4I 29 50 
17 34 = 22 28 4 po aes 31 50 
18 3455 ene 22 29 4 40 28 
19 35 ae 24 31 8 45 30 2r 
20 35 — 20 26 o 38 29 48 
21 35 — 22 28 4 40 29 50 
22 2 v" 23 29 I 45 29 50 
.23 3 T: e 22 28 9 46 30 50 
24 39 seme 22 29 9 44 29 51 
25 39 = 21 27 5 43 27 50 
26 39 ke 21 27 4 40 27 48 
27 40 — 20 26 2 28 48 
28 4° — 21 29 6 42 28 50 
29 40 26 21 27 $ 41 27 48 
o 40.5 = 20 26 5 40 28 48 
I 4r — 22 27 5 43 26 47 
4 4r mM 21 29 4 41 29 50 
J 41.5 — 20 26 o 39 26 47 
+ 42.5 vex 22 28 6 42 28 5o 
] 43 Mem 22 29 29 49 
J 43 26 21 26 : 40 25 45 
44-5 26 20 26 4 39 29 50 
3 44-5 — 21 27 7 43 27 49 
) 45 — 22 27 6 43 27 
> 46 — 20 26 4 38 27 48 
4 46.5 a 22 27 35 aE + 
42 50 25 20 26 7 41 27 46 
43 ae 24 38 24 
4 50 j 40 as 47 
51 — 40 25 50 
$. : E ar 26 
V STRE 39 23 
E : 40 25 47 
TE 1 4t 25 48 
1A CA 4t 27 47 
R E 40 24 46 
me 41 24 5I 
ru 42 27 5 
E ) 43 26 52 
82 , 43 27 52 
105 7 46 27 53 
187 7 50 27 57 
s 53. 30 57 
41 53 31 59 
41 S Ri "o 









