700 THAXTER. 



except that it is slightly inflated, and the region between the two is 

 marked by a shallow depression ; the tip about as long as the neck, and 

 distally prominent on the inner side, sometimes less so on the outer 

 below the abruptly narrower, short, bilobed, slightly sulcate apex, 

 which is slightly inflated and about as long as l)road. Spores 28 X 

 3.5^1. Perithecia; stalk-cells and basal region 30X20)u; venter 

 58-65 X 20-24 m; neck and tip together 23-27 X 11.5 m; apex 

 8 X 8 ju- Appendage 55-60 X 8 m- Receptacle 26-30 X 24 /x. Total 

 length to tip of perithecium 150-210 X 27 /x. 



On the thorax and abdomen of Leucophenga sp. Xo. 1814, Fayette- 

 ville, Arkansas. 



This species appears to be most nearly allied to S. Notiphilae, from 

 which it differs, however, in numerous details. Abundant material has 

 been examined. 



On Streblidae. 



Stigmatomyces Streblae uov. sp. 



Slightly curved, hyaline becoming faintly tinged with pale yellow, 

 the base of the appendage becoming slightly brownish. Basal cell of 

 the receptacle slightl}^ curved, slightly broader distally, the base stout, 

 rounded, with a small pointed black foot turned sidewise; subbasal 

 cell slightly oblique and somewhat broader than long, irregularly tri- 

 angular or four-sided. Stalk-cell of the appendage lying directly 

 above the subbasal cell, smaller and abruptly slightly narrower, of 

 somewhat irregular outline, its pointed external lower angle slightly 

 overlapping the subbasal cell: externally very slightly convex below, 

 the broad insertion occupying its whole distal surface. Axis of the 

 appendage consisting of three large and one or two small, usually 

 sterile cells, and bearing in all nine and ten antheridia; the basal cell 

 tinged with yellowish brown, five-sided, much broader than long, the 

 two distal sides meeting at a very obtuse angle, the outer united to the 

 subbasal cell, the inner bearing a small somewhat flattened cell from 

 which two smaller ones arise; one distal, the second at the right, 

 both of which bear pairs of antheridia, both independent, " and one 

 placed somewhat lower than the other : the subbasal cell bearing one 

 such small cell, on which a pair of antheridia are similarly borne: the 

 third cell bearing a pair directly: the fourth cell rarely becoming 

 an antheridium, usually sterile and associated with a second small 

 terminal cell : the appendage divergent, bearing the antheridia on the 



