Original caption: Fig. 4.—Anthrapalaemon Parki, showing antennules, antenne, rostrum, abdomen, and tail. Nat. size. Locality—River Esk, 4 miles south of Langholm, Dumfriesshire.

Fig. 4a.—Anthrapalaemon Parki, showing carapace, rostrum, eyes, antennae, three abdominal segments, and tail. Nat. size. Same locality.

Fig. 4b.—Anthrapalaemon Parki, to show nature of ornament on carapace. Nat. size. Same locality. Fig.

Fig. 4c.—Last abdominal segment and tail of Anthrapalaemon Parki, showing that the spines in the other specimens are portions of fin-like lobes, shows spinelets on the outer margin of the exopodite and small spines articulated with telson. Nat. size. Same locality,

Fig. 4d.—Outline of specimen of '"Anthrapalaemon Parki. Natural size, to show to what a size they sometimes attained. Same locality.

Fig. 4e,—Outline of portion of right margin of carapace of still larger individual. Nat. size. Same locality.

Fig. 4f—Restored tail of Anthrapalaemon Parki, made out from the steak of a large ahe of specimens.

Fig. 4h.—Portion of test of common shrimp (Crangon vulgaris), highly magnified as a transparent object, to show nature of calculi which infest it.