NO. 9 MARINE INVERTEBRATES, ALASKA — MacGINITIE III 



Table 7. — Gross analysis of plankton. Point Barrozv, Alaska, August-September 

 1948, September ig4g-July 1950 — continued 



10-29-49 Pteropods, A; veligers, R 



10-31-49 Veligers, R 



II- 1-49 Veligers, few; i yg. clam 



11-10-49 None 



I -21 -50 I veliger 



1-25-50 I veliger 



1-27-50 3 veligers; trochophore of Clione 



2-10-50 None 



2-25-50 Veligers, few ; trochophores * of Clione 



2-28-50 Veligers, C; trochophores of Clione 



3- 8-50 Veligers, few ; trochophores of Clione; i Ig. Clione 

 3-14-50 Veligers, 10; trochophores of Clione 



3-23-50 Veligers, few; trochophores of Clione 



3-29-50 Veligers, few; trochophores of Clione, C; 2 yg. clams 



4- 8-50 Veligers, C; trochophores of Clione; (veligers with opercula) 

 4-15-50 Veligers, C; trochophores of Clione, 17; (veligers with opercula) 

 4-24-50 Veligers, 8; trochophores of Clione, C 



5- 2-50 Veligers, 5 ; trochophores of Clione, C ; i yg. Spiratella 



5- 9-50 Veligers, C; trochophores of Clione, C 



5-17-50 Veligers, none; trochophores of Clione, C; (i with wings developing) 



5-23-50 Veligers, 8 ; trochophores of Clione, C 



5-30-50 Veligers, 7; trochophores of Clione, C-A 



6- 6-50 Veligers, sev. (early stages) 

 6- 9-50 Trochophores (very early) 

 6-16-50 I veliger of Spiratella 

 6-20-50 I Clione 



6-23-50 I Clione 



6-27-50 Veligers, 2 (2 species) ; i trochophore of Clione 



6-30-50 I sm. Clione, i very sm. Clione; trochophores of Clione; veligers, few 



7-13-50 4 trochophores of Clione; 3 veligers of Spiratella; other veligers (sev. 



kinds) 

 • These trochophores have a large circle of oil droplets around the anterior end. 



MISCELLANEOUS 



8-30-48 Echiuroid larvae 



9- 9-49 Pluteus larva No. i, few; pluteus larva No. 2, C 



9-10-49 Pluteus larvae, few 



9-13-49 Pluteus larvae, none 



9-30-49 Pluteus larvae, none 



10-24-49 Pluteus larvae, rare 



10-24-49 Ciliates, AA ; appendicularians or tunicate larvae, R 



10-31-49 Vorticellids attached to mysid; appendicularians or tunicate larvae, R 



10-31-49 Pluteus larva, none 



II- 1-49 Pluteus larvae, rare 



1-21-50 From 28 hauls made from this date until 7-13-50 no pluteus larvae 



were observed 



1-27-50 I tintinnid; ciliates, C 



3- 8-50 3 appendicularians ; few unidentified larvae 



