416 C. O. WHITMAN. 
mon oviduct has united with the saccular portion of the vagina, and thus 
appears to enter its anterior instead of its posterior end. x 4. 
Fie. 69.—A maxilla armed with curved denticles, from Hemadipsa 
japonica. x 50. 
Fic. 70.—A maxilla with straight conical denticles, from Hirudo nip- 
ponia. 
Fic. 71.—Two of the large central cells of the eye (Macrobdella). x: 
Nucleus. 1, 2, 3. Vacuolar spaces surrounded by the peripheral granular 
protoplasm. At one point the protoplasm thickens into a protuberance, 
which juts into the vacuolar space. xX 465. 
