1 82 THE NORTH AMERICAN SLIME-MOULDS 



other species of the genus in having smoother capillitium, for 

 which reason Rostafinski calls the present species Perichcena 

 vermicularis. O. pallida B. and C. seems to us to be the same 

 thing, N. A. F., 726. 



New England, New Jersey, South Carolina, Ontario, Ohio, 

 Iowa. 



2. OPHIOTHECA CHRYSOPERMA Currey. 



1833. Trichia circumscissa Wallr., Fl. Cr. Ger., p. 378. 



1854. Ophiotheca chrysosperma Currey, Quart. Mic. Jour., II., p. 240 



1875. Cornuvia circumscissa (Wallr.) Rost., Mon., p. 290. 



Plasmodiocarp elongate, bent and curved in various ways, 

 spherical, more rarely annular or even reticulate, yellowish or 

 ochraceous brown, opening irregularly ; peridium thin, with 

 yellowish outer layer ; capillitium rather abundant, of threads 

 slender, sparingly branched and minutely but distinctly spinu- 

 lose ; spore-mass yellow, spores by transmitted light pale, almost 

 smooth, about 8 /LX,. 



Occurs on the inner bark of deciduous trees, especially of 

 oak. Not common. 



This is possibly Cornuvia circninscissa (Wallr.) of Rosta- 

 finski's monograph, but it is doubtful to what Wallroth referred. 

 Rostafinski's other citations are equally uncertain. Currey's 

 figures and description alone merit recognition. 



Ohio, Iowa, Tennessee. 



3. OPHIOTHECA WRIGHTII Berk, and Curtis. 



PLATE XL, Figs. 7, 7 a, 7 b. 



1868. Ophiotheca wrightii B. and C.,Jour. Linn. S0c., X., p. 349. 



1876. Cornuvia wrightii (B. and C.) Rost., Mon. App., p. 36. 



1892. Cornuvia wrightii (B. and C.) Macbr., Bull. Lab. Nat. Hist. la., 

 II., p. 122. 



Plasmodiocarp bent or short-flexuous, often arcuate or com- 

 pletely annular, dark chestnut brown or black, opening irregu- 

 larly ; peridium thin, brittle, translucent, covered without by 

 a rather dense layer of brownish or black brown scales ; capil- 



