478 PROCEEDINGS OP THE AMERICAN ACADEMY. 



bluntly pointed rather stout appendage arises on one side only of the 

 perithecium, just below this tubular apex beyond which it projects. 

 The basal and sub-basal cells of the receptacle about equal in length, 

 the latter broader : distal portion of the receptacle composed of the 

 usual four cells, the sub-terminal cell forming a distinct external 

 prominence below the terminal cell which is bent towards and partly 

 overlaps the perithecium. Perithecium (main body) 60 X 18 fx, its 

 tubular apex 18-25 X G /i. Spores 20 X 3 /x. Length of receptacle 

 110 IX. 



On Laccophilus maculosus Germ. Connecticut. 



A singular species appearing at first sight malformed or abnormal. 

 It occurs in company with H. uppendiculatus on the anterior legs of 

 its host. 



Heimatomyces uncigerus, nov. sp. 



Pale yellowish. Perithecium moderate, rather broad, its outer 

 edge straight, its upper fourth free from the receptacle, its prominent 

 bluntly tipped extremity bent abruptly outwards at right angles : a 

 slender hooked appendage arises from a point close to the receptacle 

 about two thirds of the distance from the base to the apex of the peri= 

 thecium, projecting from it obliquely outwards. Basal cell of the 

 receptacle large and long, the sub-basal cell small, sub-rectangular, 

 flattened: the distal portion composed of the usual four cells, the 

 terminal one not very prominent and bent strongly towards the peri- 

 thecium. Perithecia 80 X 22-25 p.. Spores 45 X 4 /x. Perithecial 

 appendage about 22 /x, long. Receptacle 132 ^ long. Total length to 

 tip of perithecium 135 yu,. 



On Laccophilus maculosus Germ. Connecticut. 



The more or less wedge-shaped apex of the perithecium of this very 

 distinct form projects outwards abruptly at right angles to the straight 

 outer perithecial margin. The hook-like appendage is quite unlike 

 that of any other species in form and position, and, occurring only on 

 one side, is not seen unless the perithecium lies at the right. It oc- 

 curs with H. spinigprus, H. hyalinvs, and rarely H. mai-ginatus, on 

 the posterior legs of its host. 



Heimatomyces spinigerus, nov. sp. 



Brownish yellow. Perithecium small, its tip slightly exceeding 

 that of the receptacle; its extremity blunt, lobed, curved outwards, 

 and bearing two projections just below the tip, unequal in size, one of 

 which extends outwards beyond the perithecial margin as a blunt 



