Fig. 30. Microcephalic spermatozoon. × 670.
Fig. 31. Spermatozoon. The head is small, and pear shaped. × 670.
Fig. 32. Macrocephalic sperm. The middle piece is much thickened. ×
670.
Fig. 33. Tailless spermatozoa. × 670.
[Illustration: PLATE I]
[Illustration: PLATE II]
[Illustration: PLATE III]
[Illustration: PLATE IV]
[Illustration: PLATE V]
[Illustration: PLATE VI]
[Illustration: PLATE VII]
[Illustration: PLATE VIII]
[Illustration: PLATE IX]
[Illustration: PLATE X]
[Illustration: PLATE XI]
[Illustration: PLATE XII]
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