Marine Cercariae 
PLATE XXVIII. 
Figs. 1, 2. Cercaria neptuneae sp. inq. 
1. Eedia (length 2 mm.). 
2. Cercaria (length without tail 0'4 mm.). 
Figs. 3-6. Acanthopsolus lageniformis Labour. 
3. Young redia (length 0’3 mm.). 
4. Older redia (length 3 mm.). 
5. Young tailed cercaria. 
6. Cercaria (length 0‘5 mm.). 
Figs. 7-10. Eclnnostomum leptosomum Crepliu. 
7. Young redia (length 0'2 mm.). 
8. Older redia (length 1‘4 mm.). 
9. Cercaria (length without tail 0-5 mm.). 
10. Encysted cercaria (cyst 0-12 mm.). 
Figs. 11-14. Echinostomum secundum Nicoll. 
11. Young redia (length 0'4 mm.). 
12. Older redia (length 2 mm.). 
13. Cercaria (length 0-7 mm.). 
14. Encysted cercaria (cyst 0-23 mm.). 
Figs. 15-17. Echinostomum sj). Cercaria littorinae obtusutae sp. inq. 
15. Young redia (length 0'5 mm.). 
16. Older redia (length 2’5 mm.). 
17. Cercaria (length 0'78 mm.). 
PLATE XXIX. 
Figs. 1-3. Cercaria purpurae sp. inq. 
1. Young redia (length 0'32 mm.). 
2. Older redia (length 3 mm.). 
3. Cercaria (length without tail 0’64 mm.). 
Figs. 4, 5. Cercaria patellae sp. inq. 
4. Eedia (length 1-8 mm.). 
5. Cercaria (length 0'5 mm.). 
Figs. 6, 7. Stephanochasmus haccatiis Nicoll. 
6. Encysted cercaria. 
7. Cercaria pressed out of cyst (length 2"9 mm.). 
Fig. 8. Cercaria liniae Nicoll and Small (length 0-6 mm.) from Nicoll and Small (1909 
p. 242). 
Fig. 9. Cercaria concava Nicoll and Small (length 0'48 mm.) from Nicoll and Small (1909 
p. 243). 
Fig. 10. Cercaria mytili sp. inq. (cyst 0’2 mm.). 
Figs. 11, 12. Cercaria ephemera Nitsch. 
11. Eedia. 
12. Cercaria (length 0-24 mm.). 
Figs. 1.3-15. Cercaria lophocerca Fil. 
13. Young redia (length 0'16 mm.). 
14. Older redia (length 1’4 mm.). 
15. Cercaria (length without tail 0'2 mm.). 
