CERATIOCARIS CANALICULATA. 31 



surface of the segments. The proximal portion of the crushed caudal appendages 

 is present; the telson is punctate with the bases of prickles along its dorsal 

 edge. 



In a green-grey, rather hard mudstone; calcareous throughout, but less in 

 some parts than in others. Lower Ludlow ; Church Hill, Leintwardine. Ludlow 

 Museum B. Pardoe Coll. 



PI. V, fig. 2. Carapace, five or six segments, and part of the caudal appen- 

 dages. A smooth, but crumpled carapace (left valve outwards), with obscure 

 indications of internal organs, and a faint trace of an antenna (?) at its front apex. 

 Five body-segments, partly crushed, some showing longitudinally wrinkled and 

 anastomosing sculpture. Proximal portion of the style and two stylets is present ; 

 the style bearing a row of little pits (closer and rather more numerous than in the 

 figure). 



In greenish-grey micaceous mudstone, calcareous on the edge, weathering 

 brownish, and bearing some impressions of small Brachiopods, with numerous 

 spots and patches of organic origin. Lower Ludlow. Ludlow Museum D. 

 Lightbody Coll. 



C. Pardoeana. — Carapace. — Subovate, pointed in front, with rostrum. 



Body-segments. — Delicately striate longitudinally. 



Caudal appendages. — Strong, ridged ; the style pitted dorsally. 



8. Ceeatiocaeis canaliculata, T. B. J. and H. W., 1886. PI. IX, figs. 2 and 3. 



1886. Cebatiocabis canaiictjiata, T. B. J. Sf H. W. Fourth Report on the 



Palaeozoic Phyllopoda, Brit. Assoc, p. 230 ; 

 and Geol. Mag., October, 1886, p. 457. 



Two small specimens showing crushed telsons (one in Mr. Cooking's collection, 

 and the other M. P. G. x -^ ; both from the Ludlow series). These are rather 

 stout and ridged, and have a fluted or channelled sculpture on their upper 

 part, instead of either wrinkles or leaf -pattern ; hence we have given the name 

 canaliculata. The ultimate segment bears straight striee (fig. 3). 



PI. IX, fig. 2. The upper portion of a much crushed and broken telson, reddish- 

 brown, ridged, and bearing straight, low, rather broad wrinkles at its proximal 

 end, and indications of the bases of bristles (pits) on its outer edge (displaced by 

 crushing). 



In rather soft, light-greenish grey, micaceous, and calcareous mudstone. 

 Upper Ludlow Beds ; Whitcliffe, Ludlow. Mr. Cocking's Collection. 



