Pa A i Valen: 
LAOTIRA CAMBRIA (p. 32). 
Fic. 1. View of an exumbrella with 12 narrow lobes. The arrangement of the lobes shows a slight 
tendency to irregularity. 
Fig. 2, 2a. View of the exumbrella and subumbrella sides of a specimen having many lobes, in which 
the tendency to an irregularity of arrangement is greater than in figs. la and 2a of 
Pl. VII. 
Fia. 3, 8a. Side views of a specimen in which the exumbrella lobe is flattened out and the subum- 
brella and interradial lobes are clearly defined. 
Fie. 4. Exumbrella view of a somewhat distorted individual with 5 regular lobes and 3 projecting, 
irregular, interradial lobes. 
Fig. 5. Exumbrella view of a specimen with 6 broad lobes. 
Fig. 5a. Subumbrella view of fig. 5, showing a complex system of lobes, somewhat like that of 
fig. 5a of Pl. X and fig. 3 of Pl. XIII. 
Fia. 6. Exumbrella view of a specimen in which the irregularity of the lobes is strongly marked. 
Fic. 7. A specimen, flattened out in the shale, in which the radial exumbrella canals appear as 
narrow, dark, iron-stained bands; the mass of the medusa leaving but a film which is 
scarcely perceptible on the shale. 
Fic. 8. Subumbrella surface of a large individual in which the irregularity of the arrangement 
of the lobes is much more marked than in figs. 1a and 2a of Pl. VII. 
Fia. 9. Partial side and subumbrella view of fig. 6, Pl. XIII. The lobes x, # correspond to the 
lobes x, x of the latter figure. 
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