"When once the cœlom is accomplished as a cavity definitely shut off from the ‘metenteron’—the name we now give to what remains of the archenteron" (OED).

"Chlorocruorin, a green substance which, according to Ray Lankester, is the cause of the green colour of the blood of some species of Sabella" (OED).

"Of the six endites the proximal is somewhat isolated and pushed towards the middle line.‥ It is a jaw process, and may be spoken of as the ‘gnathobase’" (OED).

"When identical or nearly similar forces, or environments, act on two or more parts of an organism which are exactly or nearly alike‥[or] on parts in two organisms, which parts are exactly or nearly alike and sometimes homogenetic, the resulting correspondences called forth in the several parts in the two organisms will be nearly or exactly alike‥I propose to call this kind of agreement homoplasis or homoplasy" (OED).

"The Nephridia or segmental organs of the Entozoa" (OED).

"This enlarged portion of the hypodermis is, in fact, the soft or living tissue of the eye [of the Scorpion], and may be distinguished from the lens in front of it by a special name. We propose to call it the ‘ommatēum’. The ommateum and the lens together form the eye" (OED).

"Near the base of the stem of each ctenidium is‥Spengel's olfactory organ, which tests the respiratory fluid.‥ We propose to call it the osphradium" (OED).