244 THAXTER. 



what rounded above, their posterior margins rather strongh' con\ex; 

 all hut the lowest separating a small cell distally and externally. The 

 subterjninal cell, also rarely the second cell below it, giving rise to an 

 outcurved secondary appendage, about seven to ten-celled, tapering 

 more or less, slightly shorter than the similar, six to nine-celled, erect, 

 tapering primary appendage. Perithecium erect, nearly symmetrical, 

 subfusiform, sessile, relatively short; the tip relatively long, well 

 distinguished, more convex anteriorly; the apex short, rounded. 

 Perithecia 105-22 n. Receptacle 125-170 X 25 /x. Primary ap- 

 pendage 90-125 X 12 /x; secondary 80-95 ju- Total length to tip of 

 perithecium 210-275 ^x. 



On the left elytron of Derispia moquerysi Pic. No. 2568, Kamerim, 

 West Africa. 



In general habit this species recalls D. nanomascidus, although the 

 perithecia and appendages are quite different and are produced from 

 one side onh*. Rarely in the present species, a second perithecium 

 and appendage may arise from the cells immediately below those 

 normally present. 



Dimeromyces luteus nov. sp. 



Male indiridiial pale yellowish, slender; the receptacle consisting 

 of three obliquely superposed cells, the basal long and slender, the 

 others subequal, one or both producing antheridia. Appendage of 

 three or foiu- cells, the basal larger rather clearly distinguished from 

 the slightly brownish narrower cells above. Antheridia relatively 

 long and slender, the stalk-cell well defined, curved inward, the upper 

 one in contact more or less continuously with the appendage, extending 

 nearly to its tip, the necks usually strongly curved inward. Recep- 

 tacle 55-65 X 12.5 At- Appendage 40-45 At. Antheridia 46-50 X 9/i. 

 Total length 95-100 X 14 m- 



Female individual clear pale yellow, becoming somewhat suflFused 

 with brown, erect. Receptacle consisting of four cells; the basal 

 somewhat elongate, the second and third oblique and somewhat 

 flattened; producing normally one perithecium from the third and 

 one secondary appendage from the second. Primary appendage 

 shorter than the perithecium and erect beside it, or rarely slightly 

 divergent; the basal cell much larger, long, and broader than the 

 subbasal; which is clearly distinguished by its brown color. Second- 

 ary appendage seldom as long as the perithecium, and lying close 



