190 PROCEEDINGS OF THE AMERICAN ACADEMY. 



latter, and obliquely separated by a curved septum from the basal 

 cell of the appendage which lies beside it and extends but slightly 

 above it: the rest of the appendage rather slender, rigid, its axis of 

 four or five successively smaller superposed cells, each bearing distally, 

 from the inner angle, a short hyaline branch, seldom persistent and 

 producing large bottle shaped antheridia singly or in series of two, 

 one terminal and the other intercalary. Spores (in perithecium) 

 about 45X6 /x. Perithecium, including basal cell-region, 240-250X 

 46 ju: the subterminal spine 80-90 /uX8-10 /x near base; the stalk-cell 

 60X15)U. Receptacle including foot 70 /i. Free portion of append- 

 age 135 ju. 



On the inferior surface of the abdomen of Pinophilus suffusus Er., 

 No._1977, Llavallol. 



Closely allied to C. Indicus, from which it differs chiefly in the 

 clavate form of the perithecium, and in the highly developed spine 

 which springs from a projection of one of the subterminal wall- 

 cells. The species appears to be very rare, for although very many 

 specimens of its host were obtained it was found in only two instances. 



Corethromyces macropus nov. sp. 



Nearly hyaline. Perithecium asymmetrical; the outer margin 

 convex, the inner straight below the incurved tip ; the basal cell-region 

 not distinguished from the slightly and symmetrically inflated body, 

 which tapers slightly to the undifferentiated tip; the latter slightly 

 suffused with brownish, and rather abruptly bent inward, one of its 

 lateral wall-cells deeply suffused with brown, and forming a free 

 truncate projection immediately beside the flat-conical, hyaline, 

 slightly geniculate apex: stalk-cell small, not distinguished from the 

 basal cells, one of which lies beside it extending nearly to its base. 

 Receptacle relatively large more or less strongly curved, the foot 

 large and long, tapering from a large bulbous portion to its pointed 

 extremity: the basal cell more or less deeply suffused with smoky 

 brown, paler above, rectangular, somewhat longer than broad, dis- 

 tinguished b}^ a horizontal septum from the small subbasal cell, from 

 which the perithecium and appendage arise asymmetrically. The 

 appendage consisting of about five superposed cells; rigid, straight, 

 divergent, nearly hyaline; the basal and subbasal cells not appendicu- 

 late, the rest bearing short branches distally on the inner side. Peri- 

 thecia, including stalk- and basal cells, 100-110X25 /x- Receptacle, 

 including foot, 55X18/X- Appendage 50-55X8-10 m- Total length 

 to tip of perithecium 150-180 /u. Spores 30 ^u. 



