230 THAXTER. 



if unbroken, by their resemblance to the termination of the secondary 

 appendage, when the latter is simple. The structure of the receptacle, 

 as in D. Pachytclis, conforms strictly to the type of the genus, the 

 basal cell being in direct contact with all the rest. 



Dimeromyces Galumnae nov. sp. 



Male individval slightly curved throughout, faintly tinged with 

 brown, consisting of a three-celled receptacle, terminating in a simple 

 terminal three-celled appendage, not abruptly distinguished, the two 

 distal cells somewhat shorter, narrower and paler than the basal. 

 The antheridium partly lateral, incorporated in the axis, arising from 

 the subbasal cell its very short neck lateral. Total length to tip of 

 appendage 50-58 X 10 /jl. 



Female i7idiridtial. Receptacle reddish brown, consisting of usually 

 seven cells, the basal nearlv hvaline, the second to sixth flattened and 

 very obliquely superposed, the third, fourth and sixth producing 

 secondary appendages; straight, rigid short subhorizontal, or bent 

 upward, that from the second and third usually rudimentary or obso- 

 lete; the fifth producing the usually single perithecium, which is 

 recurved when young, later divergent and straight or slightly curved 

 inward, the long slender stalk-portion rather clearly distinguished 

 from the subsymmetrically fusiform body; the inner lip slightly higher 

 and flattened. Basal cell of primary appendage concolorous with 

 the receptacle, more than twice as long as broad, tapering slightly, 

 followed by one or two distinct cells which pass into a very slender 

 and greatly elongated flagellum, stouter, curved or almost clavate at 

 the tip. Perithecia including stalk 115-190yu ; the body X 15-19 )u, 

 the stalk X 7. 5-11. 5 /x. Primary appendage, longest 325 ^^, its 

 smaller diameter 3.8 /x, its basal cell 20-24 X 10-12 at base. 



Prostrate on the upper surface of Gahimna sp. No. 2976, Lasema, 

 Fiji Is. Mann Coll. M. C. Z. 



This species is chiefly peculiar for its enormously elongated primary 

 appendage. The male is unlike that of any other species from the 

 position and very short lateral neck and discharge tube of its antheri- 

 dium. The receptacle of the female finally lies prostrate on the 

 surface of the host, the long-stalked perithecium projecting upward 

 at right angles. 



Dimeromyces Parasiti nov. sp. 



Male individval hyaline, relatively long and slender; the foot large, 

 the basal and subbasal cells subequal; the former usually obsolete, or 



