VOL. XVI. (2) PARIS—-ECHINOIDS 149 
DIADEMOPSIS TOMES! (Wright). 
Mr J. W. Tutcher has obtained this species from 
the White Lias of Sparkford, Somerset. The specimen 
was identified from the peculiar arrangement of the pairs 
of pores, which are triserial, the direction of the rows 
being upwards and outwards, precisely opposite to the 
direction in which they are arranged in the genus Pedina.' 
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4 
Fic. 2.—Galeropygus Dumortieri, sp. nov., Hemera Dumortieria. 
Haresfield Beacon, near Gloucester. 
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GALEROPYGUS DUMORTIERI, sp. nov. (Text-figure 2.”) 
Type-locality. Haresfield Beacon, near Gloucester. 
Horizon. Cephalopod-Bed. Toarcian. 
Hemera. Dumortieri@. 
Collection. L. Richardson. 
Diagnosts.—Test depressed, sub-pentagonal in outline, 
rounded posteriorly. Slightly longer than broad ; apical 
system nearer to the anterior border than to the posterior ; 
anal canal fairly wide and deep ; the two posterior ambu- 
lacra rather wider than the others, and bending in towards 
the anal canal. 
Dimensions: Length, 27°5 mm.; diameter, 26 mm. ; 
height, about 10 mm. 
Remarks-—The specimen obtained from Haresfield 
Beacon is the only example of this species known at 
present. It has the characteristic iron-shot matrix of the 
Dumortieria-Bed attached to it. 
1 “British Echinodermata,’ Monogr. Palzont. Soc., pt. 1 (1 858-1880), p. 458. 
2 The dark lines in the middle of the ambulacral areas were drawn simply to guide 
the draughtsman, and were inadvertently inserted in the sketch. 
