Fig. l. Pentacrinites Briareus, (nat. size) on a slab of Lias from Lyme Regis, covered with a large group of the same animals, in the collection of the Geological Society of London. (Original.)

Fig. 2. Rare and beautiful specimen of Briarean Penta-crinite, from the Lias at Lyme Regis, in the collection of Mr. Johnson, of Bristol, shewing the plated integument of the abdominal cavity, terminated upwards by a flexible Proboscis, and surrounded by the commencement of the arms and fingers. This part of the animal is very seldom preserved. See V. I. p. 439. (Original.)