339 



LlCH. 



28th An. Kt. Mus. N. Hist. 1879.) From Collett's Indiana Be- 

 port of 1881, p. 240, plate 4, figs. 9 to 17; plate 5, figs. 1 to 10; 

 plate 6, figs. 3 to 11 ; from which I have selected figures to 



Vb. 





\ "Sn-r^**"''*' ■/ 



\, 



.\ - . 









-i.ilL^ 





Pl.4,6. "''"^ 



show the parasitic character of this bryozoon. (Plate 4, f. 9, a 

 small irregular specimen ; f. 10, another, the frond enrolled on 

 itself; f. 11, section of 10 showing the great increase of length 

 of cell in rolled part ; f. 12, cell surface of encrusting specimen, 

 showing tendency to tubular extensions and branches; f. 13 

 enlargement of cell structure of the last; f. 14 enlargement of 

 12, with some of the cell mouths angular; f. 15, another en- 

 Zar^emen?^ with large cells ; f. 16, four young Lichenalia and 

 the base of a Oornulites, growing on a Strophostylus eyclos- 

 tomus shell, covered below with another parasite (Faleschara)^ 

 f. 17, a young one on a Platy stoma niagarense shell. — Plate 5, 

 f. 1, 2, upper and lower surface of young Lichenalia ; f. 4 under 

 surface, irregular growth, concentric markings; f. 7 two young 

 ones on a Fenestella ; f. 8, lower surface of a small fragment, 

 through which show the lengthened cell structure; f. 9, ditto 

 showing concentric markings ; f. 10, ditto, showing radiating 

 grooves on its base, made by cells curving upward toward sur- 



