H. Woodward — British Fossil Crustacea. 355 



the Eev. H. II. Winwood, M.A., F.G.S., from the Lower Lias of 

 Weston, near Bath, who kindly obliged me with a cast of it for ex- 

 amination. 



The carapace, which measures 13 lines in length along the 

 mesial line, and 13 lines in breadth across the branchial region, 

 is so disposed upon the matrix as to exhibit both sides in nearly the 

 same plane : I have observed several specimens in this condition 

 from the Oolite of Malt(jn, Yorkshire. The surface is finely granu- 

 lated, the regions of the carapace are tumid, the nuchal furrow is 

 deep and nearly transverse, the part anterior to it is marked by three 

 ridges, disposed nearly parallel to each other, on either side of the 

 median ridge ; the cardiac region is separated from the branchial 

 by two furrows, which commencing on the dorsal line 2^ lines from 

 the posterior border of the carapace, extend forward in two diverg- 

 ing V-shaped lines down either side until they nearly touch the 

 nuchal furrow, when the inner furrow is curved back, uniting with 

 the outer, and encircling the hepatic region, it joins the nuchal 

 furrow near the lateral margin. 



I have carefully compared Fig. 2 with a large series of specimens 

 from the Oolite of Yorkshire, Normandy, and Germany, and I 

 find — although at first disposed to consider it specifically distinct — 

 that I must refer it to the Glyphea (Astacus) rostrata of Phillips,^ 

 which, although usually larger in proportion, has precisely the same 

 disposition of the regions and furrows of the carapace. The species 

 occurs at Malton and Scarboro', in Yorkshire ; at Besancon and Eu, 

 near Vesoul, and some localities in Normandy ; and Weston, near 

 Bath. (Collns. : British Museum, and Kev. H. H. Winwood, F.G.S., 

 Bath.) 



VI. Another species of GlypTiea (Plate XVII., Fig. 3) is from 

 the Lower Lias of Lyme Eegis, Dorset, and was collected by 

 E. 0. H. Day, Esq., F.G.S., formerly of Charmouth. 



It measures 17 lines in extreme lengh, of which the carapace is 7 

 and the abdomen 10 lines. All the legs are monodactylous ; the 

 penultimate joint of the fore-leg is broad and flattened, the surface 

 rugose ; the rostrum is armed with several short, erect spines ; the 

 surface of the carapace on the branchial regions is scabrous ; the 

 body-segments are smooth, save near the epimera, when they become 

 slightly rugose ; the borders are falcate, and armed with minute 

 spines. The antennse are not preserved. 



Although our specimen difters slightly from Dr. Oppel's figure 

 of Ghjijliea Heeri [Palaiontologisclie Mittheilungen, etc., Tab. 15, 

 Fig. 1, from the Lower Lias, Schambelen by MuUigen, Baden, 

 Canton Aargau], in the form of ihe distal end of the penultimate 

 joint of the fore-leg, and in the more pointed form of the epimera 

 of the abdominal segments, yet in other respects they appear to 

 agree so closely, that I think it better to await more perfect 

 materials before venturing to separate them. (The original is 

 preserved in the British Museum.) 



VII. The fourth crustacean figured on Plate XVII., Fig. 4, also 

 1 Geol. Yorkshire, Part 1, PI. IV., Fig. 20, from the Coralline Oolite. 



