Jone^ and Woodward— On Fossil Phyllopoda. 291 



position of the umbo, is the Carboniferous E. striata, var. tenui- 

 pectorahs, from the Ural (Ann. Mag. Nat. Hist. ser. 5, vol. xii. 1883, 

 p. 246, pi. vi. fig 2). In this form, however, the antero- ventral 

 margin has less convexity and the postero-ventral curvature is 

 more oblique. 



In E. membrancea (Monog. Foss. Esth. pi. i. figs. 3 and 6), although 

 tlie front and ventral margins do not make so elliptical a curve, the 

 umbo is m relatively the same position as in oui- Fig. 2. E. Greyii 

 from the Karoo Formation near Cradock, South Africa (Geol. Mag.' 

 1878, p. 100, PL HI. Fig. 1) has a somewhat similar position for 

 its umbo, but the dorsal margin is not straight. 



Although it is just possible that these small specimens may be 

 young forms, differing according to their stage of growth from such 

 an adult as Fig. 1 (with which they were associated), yet, not 

 having evidence of such a relationship, we propose to distinguish 

 them by a separate name, and to call them E. Stowiana, in memory 

 of the late G. W. Stow, who did much to elucidate the structure and 

 history of the Karoo Beds, including the Cave-Sandstone, in a shale- 

 bed of which these Estherice occur. 



3. DisoiNocARis Browniana, H, Woodward, 1866 

 (Ph IX. Figs. 3-5.) 



Discinoearis Browniana, H. W. and T. E. J., Mouog-. Pal Phyll Part II 1892 

 p. 119, pi. xvi. figs. 12-19, 21-23. " ' 



Fig. 3. Height (length), 8 mm. Breadth, 8 mm. This is a 

 carapace modified by pressure, slightly concave, and apparently 

 overlying a fragment of another, which shows through the nucbal 

 notch, or the nuchal portion has been displaced and turned partly 

 round in the notch. 



From Moffat; with the Graptolites — BasinVes peregrinus and 

 Climactograptiis (?). 



Figs. 4a, 4&. Portions of two abdomens; 4a, 13 mm. long, and 

 showing 12 segments, figured with the proximal end downwards to 

 the right hand ; and Fig. 46, less distinct, showing 7 segments. 



These are not unlike several examples of larger body-segments 

 of Hymenocaris, figured in pi. xiii. of Monog. Foss. Phyll. Part II. 

 1892, and described at p. 79 ; but, as Hymenocaris does not occur in 

 the Moff"at shales, nor Discinocaris at Tremadoc, we must take for 

 granted that these abdominal relics belong to different genera. So 

 also there are in the British Museum other similar sets of body- 

 rings, not so large as those of Ceratiocaris stygia and C. papilio, but 

 belonging to smaller forms of that genus. Such examples were 

 described by us in Monog. Foss. Phyll. Part 1. 1888, p. 5Q, and 

 one (0. laxa) was figured on pi. 8. fig. 12. 



This genus also is foreign to the Moffat shales, and therefore 

 cannot claim Figs. 4a, 46, for itself. Indeed such segmented 

 abdomens may and must have belonged to all the above-mentioned 

 and to other Phyllocarids. 



Fig. 5. Height (length), 10 mm. Breadth, 121 mm. This is 

 a rather large and characteristic carapace of B. Brotoniana, well 



