NO, 9 



MARINE INVERTEBRATES, ALASKA — MacGINITIE 



51 



Animal 

 Mollusks — continued 

 Gastropods 

 Clione limacina 



Table 4. — Data on eggs and breeding seasons — continued 



Date Remarks 



Plicifusus sp. 



Neptiinea sp. 



Buccinum sp. (9 or 10 sp.) 



9- g-4 



10-17-49 



10-14-49 



10- 3-49 



10-16-49 



9-28-49 

 10-16-49 



Larvae throughout winter 



with no apparent growth 



until June 

 Larvae (7 mm.) and adults 



(30 mm.) 

 Coiled rose-colored egg 



ribbon 



Egg capsules 

 i( it 



" " with em- 



bryos with shells 



Egg capsules 



Empty egg capsule 



Capsules with large em- 

 bryonic snails ready to 

 escape, others still with 

 nurse eggs 



Capsules with large em- 

 bryonic snails ready to 

 escape, others still with 

 nurse eggs 



Freshly deposited capsule 



Capsules from Aug. i to 

 Oct. 14 



Capsules with recently laid 

 eggs 



Capsules with young em- 

 bryos 



Capsules with 5-9 young 

 snails 



Capsules from July to Oc- 

 tober 



Capsules of different types 

 from the time the ice 

 went out until Oct. 16 



Type I. Mass of capsules 

 with empty capsules and 

 others containing eggs 



Type 2. 3-5 embryos (1.8 

 to 4 mm.) per capsule 

 still feeding on nurse 

 eggs 



Type 3. Capsules with eggs 



Type 4. 10-12 embryos 

 without shells 



