30 



26 



22 



X 

 I 18 



LU 



5 14 

 < 



•• • 



• • •• • • 



• •• • 



o 



o 



CO 

 CDO 



ooo 

 o o 



o 



10 



6 - 



o 



J. 



_L 



• : rigid 

 O flaccid 

   



120 140 160 180 200 220 240 



TOTAL LE^4CTH (cm) 



260 



280 



Figure 2. — Relationship between total length and clasper length in Sphyrna lewini. 



Jan heh Mtr Apf M«y Jun lul Au* Sep < >cl No* Dec 



Figure 3. — Monthly increase in the ovarian egg diameter of Sphyrna lewini. Error 

 bars represent 2 SD; numerals, sample size. 



bryos were found in July and August, though 

 some mature sharks had large ovarian eggs 

 measuring about 30-40 mm in diameter during 

 those months. The first uterine eggs, and embryos 

 measuring around 2 cm were found in September. 

 Uterine eggs were observed until November. 



After nine more months of rapid growth, the em- 

 bryos attained a total length of around 45 cm in 

 the period between May and June. These embryos 

 were regarded as full term because they were eas- 

 ily separated from placenta implying that partu- 

 rition would occur soon. 



391 



