70 BRITISH PALEOZOIC PHYLLOCARIDA. 



PI. YIII, figs. 1 ffl, 1 b. This is specimen 6/15 in the Cambridge Museum ; 

 marked " Ceratiocaris ellipticus, M'Coy, * Brit. Pal. Foss,' pi. 1 E, fig. 8." It 

 is in a dark-grey, micaceous, fine-grained, slightly calcareous sandstone of the 

 Upper Ludlow formation ; Benson Knot, Kendal. 



2. Emmelezoe ceassistkiata, T. E. J. ^- H. W., 1886. PI. YIII, figs. 3 a, 3 ^. 



1878. Cebatiocaeis Mtjechisoni, Huxley, Newton, S( Etheridge. Catal. Fosa. 



M. P. G., p. 142. 



1885. — ELLIPTICA, T. B. J. f H. W. Third Eeport Pal. Pbyll., p. 352 ; 



Geol. Mag., 1885, p. 466. 



1886. Emmelezoe ckassisteiata, — Fourth Eeport, p. 233 ; Geol. 



Mag., 1885, p. 460. 



Carapace subovate ; somewhat compressed, but rather convex above the median 

 line ; imperfect at the ends, but probably once bluntly pointed in front and 

 rather above the middle line behind ; back gently convex ; ventral border deeply 

 and nearly symmetrically curved. Two peculiar little round spots are present 

 just below the middle on the ventral edge.^ Strongly striate with parallel, longi- 

 tudinal, anastomosing wrinklets, wide apart and somewhat interrupted. Ocular 

 spot a distinct, round tubercle at one-fourth of the length of the valve from 

 the front and one-fourth height from the back ; and somewhat worn. An acci- 

 dental depression occurs behind the eye-spot. The valve in profile is somewhat 

 like the head of a Chfstodon. 



Mus. Pract. Geol. x yo, PI- VHI, figs. 5 a, 3 d, is preserved in a greenish-grey, 

 micaceous, and somewhat calcareous Upper Ludlow sandstone, from Combe Wood, 

 Presteign. This is larger than either E. elUptica or E. temdstriata, and being 

 coarsely striated has been named by us E. ceassisteiata. 



3. Emmelezoe tenuistriata, T. B. J. Sr H. W., 1886. PI. VII, figs. 9 a,9 b. 



1885. Cebatiocaeis elliptica, T B. J. S( H. W. Third Eeport Pal. Phyll., p. 352 ; 



Geol. Mag., 1885, p. 466. 



1886. Emmelezoe tenuisteiata, — Fourth Eeport, p. 232 ; Geol. 



Mag., 1885, p. 460. 



The specimen Ludlow Museum G, PI. VII, fig. 9, is shorter and broader 



^ Two somewhat analogous spots, but further apart, are seen on the ventral margin of Leperditia 

 grandis. 



