68 BRITISH PALEOZOIC PHYLLOCARIDA. 



bedding. There are also two fragments of abdominal segments of Ceratiocaris ; 

 one somewhat like PL III, fig. 4 b, and PI. V, fig. 6 b. See PI. IX, fig. 4. 



A brown, much wrinkled film represents the carapace, which has been slightly- 

 broken or rather crushed in at the edge near one end, so that the exact outline 

 there cannot be accurately defined. 



Seven abdominal segments, striated across with delicate oblique lines (much 

 like those on either half of fig. 10b), and a style with one stylet, are attached to the 

 carapace. These are drawn in fig. 8 a (as also formerly by Mr. Salter ; see fig. 8 b) 

 as if the appendages were in their normal position ; but we think that the abdomen 

 and spines have been twisted round and somewhat displaced since death. If they 

 really retain their original relative position, the carapace had very unusual propor- 

 tions in its dorsal and ventral curvatures. If, however, the abdomen and 

 appendages have been inverted, the figs. 8 a and 8 b are upside down, — it is the 

 right-hand and not the left-hand valve that is exposed, — the apiculate end should 

 be on right hand of the observer, — and the slightly broken, hollow slope would be 

 analogous to the antero-ventral ogee curve in such carapaces as fig. 6 on the same 

 plate. 



Fig. 8 b is a copy of Mr. Salter's woodcut figure of this specimen in the ' Ann. 

 Mag. Nat. Hist.,' ser. 3, vol. v, 1860, p. 159. The figured beak-like process at 

 the front end is not borne out by the specimen (fig. 8 a) ; and the narrow part 

 of the abdomen is where it is still partly embedded. Mr. Salter observes that 

 " this curious bladder-like species may very likely become the type of a new 

 genus, in which case Physocaris would seem appropriate ;" and he gives " Cerat. 

 ^Physocaris) vesica" as the title of his woodcut. 



IV. Genus Emmelezoe, T. B. J. $ H. W., 1886. 



Ceratiocaris, M'Coy, Morris, Salter, Woodward. 

 Ceratiocaris ?, T. E. J. & H. W. 

 Emmelezoe, T. B. J. & H. W. 



Ovate-oblong, boat-shaped carapace, striate and bearing an ocular tubercle. 



1. Emmelezoe elliptica (M'Coy), 1849. PI. VIII, figs, la, lb. 



1849. Ceratiocaris ellipticus, M'Coy. Ann. Mag. Nat. Hist.,' ser. 2, vol. iv, 



p. 413. 

 1851. — — — Brit. Pal. Foss., fasc. i, p. 137, pi. 1 E, 



fig. 8. 

 1854. — — Morris. Catal. Brit. Foss., 2nd edit., p. 103. 



