172 



Transactions, — Zoology. 



C0MP.IRATIVE Measukements of tlie skeletons and their parts of Balan- 

 optera rostrata, Fabricius, from Bergen (Norway) and Sumner (New 

 Zealand) : — 



Length of skeleton in a straight line 



skull 

 Width of skull across temporal bones . 

 „ beak at the base 



„ ,, ,, middle 



Length of „ „ ,, 



„ one lower jawbone along the curve on the outer side 



Circumference of lower jawbone at the middle 

 Length of corpus at atlas 

 Width of atlas across processus transversi 

 Length of lateral processes of axis 



„ corpus of third cervical vertebra 



„ ,, seventh ,, ,, 



,, ,, first dorsal „ 



Width of „ 

 Length of „ eleventh dorsal „ 



„ „ first lumbosacral vertebra 



„ lateral processus, first ,, 



,, corpus of seventh ,, 



„ ,, spinosus of first caudal vertebra 



,, ,, sixth caudal vertebra 



„ „ thirteenth caudal vertebra 



,, first ribs along the curve on outer edge 



Width of ,, at lower end 



Length of fourth ribs along the curve on outer side . . 

 Width of ,, at lower end 



Length of eleventh ribs along the curve on outer side 

 ,, shoulder blade 



Width of „ 



Length of acromion 



„ processus coracoideus 

 „ OS humeri 

 „ radius in a straight line 

 „ ulna in a straight line without olecranon . . 

 ,, ossa pelvis 

 „ the longest baleen 

 „ sternum 

 Width of „ 



Bergen 

 skeleton. 



Sumner 

 skeleton. 



ft. in. 

 . 23 



ft. in. 

 22 10 



. 5 2i 



5 2^ 



■ 2 llg 



2 8J 



. 1 9 



1 n 



. 1 li 



1 2 



. 3 4| 



3 ^ 



. 5 5g 



5 4f 



. 1 



llj 



. 2 



2 



. I 



Hi 



. 6 



6 



. li 



1 



. 14 



If 



. 1| 



If 



. 5^ 



5i 



. 5 



4| 



. 5 



^ 



. 9^ 



9i 



. 5J 



6 



. 7i 



7 



. 6i 



6i 



. If 



If 



.. 2 2| 



2 2 



.. ^ 



4J 



..4 



4 OJ 



..0 2 



If 



..2 8 



2 n 



..12 



1 2 



.. 1 111 



1 11 



.. 5i 



5f 



.. 3J 



3J 



.. 10 



91 



..15 



1 5 



.. 1 3i 



1 3i 



... 6 



7 



.. 8J 



9i 



.. 1 2i 



1 0| 



..0 9* 



9| 



