rnTLLOTHECA. 



27 



of 2-5-3 cm. The free segments are reduced to very short teeth, 

 3 mm. in length, and are twenty-three or more in number. A nerve 

 traverses the sheath to each tooth, between the nerves there is 

 a "faint groove or depression," and also "the finest possible 

 transverse striae, arranged in a festoon-like manner." ! 



Fig. 9. — Phyllotheca Etheridgei, sp. nov. Alter Etheridge. Nat. size. 



The chief characters of this species are the short free teeth, and 

 the sheath, clasping at the base, but expanding distally into an 

 open and spreading disc-like structure. 



Etheridge has compared this species with the genus Cingularia, 

 "Weiss, in the characters of the leaf-sheath. Zeiller 2 has already 



Etheridge (95), p. 151. 



Zeiller (02'), p. 31. 



