BRYOZOA. 113 
Vinella, Asecodictyon.] 
pyriform vesicles. As Vinella, on the other hand, I would class those forms in which 
they are absent. According to this arrangement the —Ascodictyon radiciformis Vine, 
would fall under Vinella. Not so, however, the A. jiliforme of the same author. 
This species, so far as I can learn, even in its most simple form, has always an occa- 
sional “lagena-like vesicle developed on the sides of the thread,” while some of its 
more complex varieties make a decided approach toward the Devonian type of the 
genus, A. stellatum Nicholson and Ethridge, jun. 
In the accompanying cut (fig. 8), a represents a cluster of vesicles of Ascodictyon 
stellatum, with a portion of the delicate stolon that connected it with similar clusters. 
One example in my collection consists of eight of such clusters. In the majority of 
the specimens seen, however, the clusters are much less regular, and in many cases 
the vesicles are distributed with little or no regularity over the surface of the body 
to which the zoarium is attached. In all cases, when the fossil is in a good state of 
preservation, these vesicles, whether isolated or arranged in radial aggregations 
will be found to be connected with each other by a delicate filament; and in this 
species at least, the surface of the vesicles exhibits a large number of minute pores. 
Fie, 8. ‘ 
Figure } of the same cut represents a natural size view of the only specimen seen 
of the Cincinnati form, that I propose naming VinELLA RADIALIS. It consists of four 
principal colonies or nuclei, growing upon an Orthoceras. Only the form is preserved, 
and even that not well. However, sufficient remains to show that it belongs to an 
undescribed species, with the probabilities greatly in favor of Vinella as its final 
resting place. The radial arrangement is. more regular, and the radii straighter 
than in any other form of the genus known to me. 
Figures c and d of the same cut illustrate an unquestionable species of Vinella, 
of which a number of excellent specimens were collected in the Niagara shales near 
Waldron, Indiana. One of the figures is magnified four and a half diameters, the 
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