Group I. 
Group II a. 
37 
Sexual organs unripe. In the larger specimens the 
testes are prolonged to the hind end of the tail. 
The tail is filled by mature sperm. The ovaries are 
small or somewhat prolonged (2—11 mm, rarely more 
than 6 mm), all the eggs are small and alike. 
Sagitta elegans. 
Length of Specimens of Group II and their Ovaries. 
E Group IIa Group II b 
z (average length 34.3 mm) (average length 34.1 mm) 
HE: Length of Ovaries gu Length of Ovaries Ez 
RB in mm … od in mm Hen 
o (æ= ves 
Sr ES Ferran TEE 12.5 
> 4 Rex 
g 2 3.45 67 8910 158 47506 7 8 SME 125 18 Fo 10 55 
SEE USE | Ii. i 
28 112 213 ; 3 
2803 2 |] i NESAS END SAN | 4 
30 HE Æ 2 1 SE Re ERE RD 2 
SEES SER BESS SØ nn Ms f: 
S2 li see bis 1 3 SØ É 
33 SØ då 6.9 1.2 6 
34 HED FE Aa. Sk 1 1:33 sv 1 10 
35 VS: 8|!|. | KØBER AES SE BRS KR ANØRE 1 10 
36 SR HED 6|!. Fe øse ER 8 
37. 1552. 3 RRS Sae He] Te 
38 ES: FR 1 ø 
39 1.2 — FE 2 1 3 
40 FARE GER | 6!. i ; 
41 |. å i 1 1 
BR] SAR re 
[81010711 61... ridslé 413 01300 882 33 11 75 
Group Ilb. The tail contains mature sperm (the evacuation has 
not yet commenced or is, at least, not finished). — 
In the ovaries the ripening of the eggs has com- 
menced, a number of them being of considerable 
size. Length of ovaries varying from 3 to 16 mm, 
on an average 7 mm. 
Group III. Sperm entirely evacuated. Ovaries (or oviducts) oc- 
cupied by mature eggs. 
Group IV. Ovaries empty. 
