image ms_132_025
Image number: RS.12621
Credit: ©The Royal Society

Ptygura rotifers




Charles Thomas Hudson (1828-1903, British), Naturalist

Object type



height (drawing): 354mm
width (drawing): 252mm
height (card support): 412mm
width (card support): 303mm


   > Optics
      > Microscopy
   > Natural history
   > Zoology

Content object

   > animal


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).

Philip Henry Gosse (1810-1888) was a British naturalist he was elected a Fellow of the Royal Society in 1856.

Charles Thomas Hudson (1828-1903) was a British naturalist, he was elected a Fellow of the Royal Society 1889.

Object history

Presented by Miss Florence Hudson, 1921.

The donation is recorded in the Royal Society’s Council Minutes: ‘The Secretaries reported the receipt of a bound volume of original drawings of the Rotifera, by C.T. Hudson, F.R.S., bequeathed to the Society by the late Miss Florence Hudson.’ Royal Society Minutes of Council, Printed, v.12 1920-1926, minute 17, meeting 28 April 1921, p.43.

Associated place

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