78 REPORT—1857. 
in the thickness of the plates which form the calyx, in the number and larger size of 
the anal plates, and especially in the form and greater number of the brachial rays, 
the first having 100 while the last has but 20 of them, whilst the joints of these rays 
in the first have a breadth equal to their height ; in the second, where they are very 
short, the breadth is six times greater. 
Locality —Woodocrinus expansus is found associated with W. macrodactylus, and 
characterises the same beds. 
3. Woopocrinus GoniopactyLtus,—In the form of the calyx and its plates this 
species diifers little from the two preceding ones. 
The basal, the subradial, and radial plates resemble those of Woodocrinus macro- 
dactylus. ‘The axillary radial pieces are surmounted by two rays, each composed of 
four joints, from the last of which spring two secondary rays, one of which attains its 
full length without bifurcation, while the other branches off into four small rays ; so 
that each arm contains ten rays, principal and secondary, making a total of fifty. 
These rays have these peculiarities, that they preserve the same breadth throughout 
their entire length; that their dorsal or exterior side is angular ; that the last axillary 
joint of each ray is very large, and the joints thicken alternately at each opposite side, 
producing by their union a zigzag pallium, exactly like that which is found in some 
species of Platycrinus and Actinocrinus. The pinnules are delicate and a little more 
distant than in the other species. ‘The anal region is not known. ‘The form of the 
plates of the dome, of which but a small portion has been found, appears to be the 
same as that of the analogous plates of the preceding species. The stem is composed 
of cylindrical joints, so arranged that three smaller ones alternate with one larger one ; 
this disposition gives to the stem an aspect quite different to that of the other species. 
Though no perfect termination has yet been found to any of the stems, there seems no 
reason to doubt that they have the same character as those of its other known congeners. 
Relations and differences.—The angular form of the brachial rays, the peculiar mode 
in which the joints are articulated, as well as the different number of the rays, dis- 
tinguish this species well from all the others. 
Locality.—The same as that of the two preceding species. 
4. Woopocrinus picnopactyLus.—The form of the calyx of this species is less 
open and a little more elongated than that of W. macrodactylus, to which it has the 
greatest resemblance. 
The basal plates are small, like those of W. macrodactylus, and offer no peculiarity. 
The subradial plates are not so broad as they are long, and are produced in a slight 
cup-like form. The first radial plates are as broad as they are long, and are closely 
united to each other. The radial axillary pieces have a length greater than their 
breadth, and are the principal cause of the elongation of the calyx: these axillary 
pieces give origin to two brachial rays composed of nine joints, rounded on their dor~ 
sal aspect, the breadth of these joints being about one-third greater than their length. 
The ninth joint is in its turn axillary, and from it spring two more rays, each com- 
posed of twenty-five to thirty joints, which have one of their sides alternately larger 
than the other. The breadth of these, like that of the joints of the primary rays, is 
one-third greater than their length. The totai number of rays is forty. The stem is 
composed of joints nearly similar to each other ; hence it has the appearance of being 
more cylindrical and less ringed than that of W. macrodactylus. Neither the anal 
region nor the dome of this species is known. 
Relations and differences.—This species differs from Woodocrinus macrodactylus in 
the number of its rays, which are double that of the last, not less than by the greater 
tenuity of those rays. It cannot be confounded with MW. expansus, on account of the 
same distinctive characters and the length of its brachial pieces, The form of the 
brachial joints of WV. goniodactylus sufficiently distinguishes it from W. dichodactylus. 
Locality.—Vhe same as that of the three preceding, viz. a thin bed forming one 
of the red beds of the lead miners, and belonging to the middle carboniferous series. 
Professor J. W. Matter, of the University of Alabama, exhibited the Geological 
Map of that State, recently prepared by the late Prof. Tuomey to accompany his Report 
on the State Survey. The principal geological features of the country were noticed, 
and the resulting peculiarities of soil and economic advantages briefly alluded to, 
