248 * THAXTER. 



At the base of the posterior legs of Lciochrodcs sp., xVuki, Solomon 

 Islands (Mann Coll.). 



The receptacle and the male individual appear to lie flat in the host, 

 the secondary appendage and the perithecium projecting upward at a 

 variable angle, the axis of the primary appendage coinciding with 

 that of the receptacle. A very large species clearly distinguished from 

 its allies on hosts of the same genus. 



Dimeromyces sulcatus nov. sp. 



Male individual hyaline, erect; the receptacle consisting of three 

 very obliquely superposed cells, the basal extending up beside the 

 subbasal nearly to its upper margin. Appendage erect, subcylindrical, 

 of five or six cells, considerably longer than the receptacle, relatively 

 stout. Antheridia one or two, suberect, the stalk-cell slender and 

 well developed, the body rather long and narrow, the neck clearly 

 defined and bent abruptly at right angles backward or sidewise. 

 Receptacle 25 X 8 /^, exclusive of the small pointed foot. Antheridia, 

 to bend of neck, 34 X 5-6 fx. Appendage 38-45 X 4.5 ijl. 



Female individual almost perfectly hyaline, erect, the receptacle 

 consisting of four cells, the protoplasmic region of the basal similar 

 to that of the two cells above, the three lying very obliquely, and 

 much flattened; the primary appendage subcylindrical, four- or five- 

 celled, erect; the secondary appendage single, arising from the sub- 

 basal cell, seven or eight celled, erect and close beside the perithecium; 

 th'e upper third of which is curved outward beyond its apex. Peri- 

 thecium straight, except for the distal curvature which is subtended 

 on the inner margin by a slight protuberance, long and slender, the 

 tip slightly inflated and distinguished aboAC and below by prominent 

 constrictions; the apex deeply sulcate, almost as long as the tip, the 

 margins convex. Perithecia 90-105 X 12-15 ^^. Primary appendage 

 40-45 X 5 IX. Secondary 65-75 X o fx. Receptacle 30-34 X 12 ix. 

 Total length to tip of perithecium 120-148 ix. 



On the elytra of Lciochrodcs sp. Los Banos, Luzon, P. I. No. 

 3043 (W. H. Weston). 



This small and almost perfectly hyaline form is more nearly re- 

 lated to D. luteus and its allies which occur on similar hosts and is 

 most easily distinguished by the peculiar conformation of the curved 

 termination of its perithecium, and its sulcate apex. 



