Diplostomum, [73]

Diplozoon, [55], [60], [73];

life-history, [60], [61];

reproductive organs, [60]

Diporochaeta, [381]

Diporpa, [60], [61]

Diporula, [528]

Dipylidium, [81], [91];

life-history, [83], [88], [89];

specific characters, [90]