238 THAXTER. 



rather abruptly to the sHghtly inflated apex. Perithecia 125-235 X 

 20-24 ju, the subconical extremity about 20 /x. Longest appendages 

 150-275 M- Receptacle 65-100 X 20-25 m- 



On elytra of Amanjgmus sp. No. 2333 and 2567, Kamerun, West 

 Africa. 



This species is very closely allied to D. Strongylii differing in the 

 form of its perithecium and antheridia, its attenuated upper and 

 down curved lower appendages, as well as in minor characters. 



Dimeromyces Trycheri nov. sp. 



Male individual pale yellowish. Receptacle rather stout, con- 

 sisting of from five to eight cells, all except the basal and distal much 

 flattened and more or less oblique. A single terminal appendage, 

 straight, somewhat divergent, usually two-celled, about as long as 

 the antheridia. Antheridia two to six; the venter stout, a slight 

 enlargement below the neck, which is short and rather well distin- 

 guished : the stalk-cell short. Receptacle about 30 X 12 /i. Append- 

 age 30 ix. Antheridia 25 X 8 ju. 



Female individual pale yellowish. Receptacle consisting of more 

 often sixteen cells, the basal subtriangular, the rest usually much 

 flattened, the distal ones slightly oblique, all bearing perithecia or 

 appendages, except the lowest. Primary appendage short, two- or 

 three-celled, the more slender terminal portion subtended by a more 

 or less distinct brownish suffusion ; the secondary ones tapering from 

 a stout base, longer, the third cell brown, more or less clearly dis- 

 tinguishing the basal from the terminal part; the lower ones not 

 thus modified, and often curved downward, or even across the foot. 

 Perithecia straight, subsymmetrical, subfusiform; the stalk shorter 

 than the ascigerous part, which is hardly distinguished from it; the 

 slightly inflated tip-region distinguished below by a slight depression; 

 the apex very slightly inflated, subsymmetrical, pointed. Perithecia 

 100-125 X 25 jx. Receptacle 80-100 X 25-30 m- Primary append- 

 age 30-40 ju; secondary appendages, longer 85-100 X 9 yu- 



On the elytra and legs of Trychcrus bimaculatus Guer., and Try- 

 cherus sp. Metet, Kamerun, W. Africa, Nos. 2445, 3087 and 3088. 



This species is closely allied to D. Amarygmi, but is at once dis- 

 tinguished from this and other allied forms by the bi'own modification 

 of the third cell of a majority of the secondary appendages. The 

 specimens occurring on the legs of the host are stouter and more 

 compact, with shorter appendages. 



