232 THAXTER. 



tinguished. The stalk-cell above them but slightly longer than broad, 

 wider distall}'; the perithecium pale brownish, the basal third slightly 

 inflated, the rest slightly curved and tapering continuously to a 

 pointed apex. Appendages scanty, rather short. Total length 210 n, 

 the lower axis X 16 ix. Perithecium 80 X 28 jx, its stalk-cell 20 X ' 

 22 iji, distally. 



On the left margin of the upper surface of the abdomen of Corisa sp. 

 Concepcion, Chile. 



L'nfortunately only one of several specimens of this species is fully 

 matured, but all show the rather abruptly acuminate termination 

 which appears to distinguish this species from others of the genus. 

 It is more slender than C. Corisae, which was found abundantly in 

 the same locality, and differs in its more or less sigmoid habit. The 

 branches are mostly broken in the type. 



