Ptygura rotifers

Microscopic views of four different species of rotifer.

Figure 1 Floscularia janus (here styled Melicérta Jánus)
Figure 2 Ptygura pilula (here styled Oecístes pílula)
Figure 3 Ptygura crystallina (here styled Oecístes crystallínus)
Figure 4 Ptygura longicornis (here styled Oecístes longicórnis)

Inscribed ‘Pl VII’ top right, ‘C.T. Hudson ad viv. del.’ bottom left and on facing page ‘1. Melicérta Jánus dorsal view, 1a. obliquely central view, 1b. side view, expanded, 1c. side view, contracted, 1d. corona with its thickened portions, 1e. left extremity of chin, 1f. a central antenna. 2. Oecístes pílula obliquely central view, 2a. obliquely dorsal view, 2b. side view; contracted, 2c. young female, 2d. ring of pellets from the tube. 3. Oecístes crystallínus obliquely central view. 4. Oecístes longicórnis side view.’w.’

Illustration from The original drawings of the Rotifer by Charles Thomas Hudson, 1886. A collaborative work with Philip Henry Gosse which was published in two volumes The Rotifera or Wheel-Animalcules (London 1886).