115 
Humes and Russell — Najadicola ingens 
UJ 
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GRAPH 4. MONTHLY OCCURRENCE OF COMPLETELY AND PARTIALLY GRAVID GILLS IN 
PARASITIZED A. CATARACTA 
trust 
£$40 
30 
uj 
51 20n 
I 
L.U 10-j 
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= LIVING EGG MASSES 
= DEAD EGG MASSES 
Zj 0-i , , , , , , , ~ ~ ~-~l ~ . 
ug DEC JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC 
1949 1950 
Q-O 
GRAPH 5. MONTHLY OCCURRENCE OF LIVING AND DEAD EGG MASSES IN A, CATARACTA 
WITH MITES OR PAPILLAE 
= WITH DEAD FEMALES 
2 30i, =WITH DEAD MALES 
GRAPH 6. MONTHLY OCCURRENCE OF DEAD MALE AND FEMALE"MITES IN 
PARASITIZED A. CATARACTA . 
