THAXTER. — NEW LABOULBENIACEAE. 47 



margin, and by a shorter broadly blackened area below the small, 

 prominently rounded inner lips ; the lip-edges horizontal, or nearly so. 

 Receptacle rather long and slender ; cells I and II of nearly equal 

 diameter, the latter large; while between it and cell III and VI the 

 receptacle may be abruptly and strongly twisted ; cells III and VI 

 subequal, the former higher; cell IV slightly smaller; cell V relatively 

 large, the inner half or less of its inner margin free between the peri- 

 thecium and the broad, thick, black, contrasting insertion-cell. Outer 

 appendage consisting of three superposed, distinctly brown, successively 

 smaller cells, each nearly twice as long as broad ; each of the two lower 

 producing distally from its inner side a simple hyaline abruptly erect 

 branch, the terminal one bearing two such branches distally. Basal 

 cell of the inner appendage half as large as that of the outer, bearing 

 on each side a branch which bears one or more branchlets and, bending 

 across the outer appendage, is often characteristically recurved beyond 

 it. Spores 58 X 5 /x. Perithecia 100-125 X 40-50 /x. Receptacle 

 275-360 /x. Appendages 185 /x. Total length to tip of perithecium 

 300-435 fj.. 



On the right inferior prothorax of Megalonychus pntrohioides Chin- 

 coxo, E. Africa; Berlin Museum, No. 1037. On M. Angolensis 

 Harold, No. 1039. 



Laboulbenia notata nov. sp. 



Perithecium straight, erect, hardly more than the tip free, almost or 

 quite opaque distally, paler below ; covered with scattered wart-like pro- 

 tuberances ; the tip abruptly distinguished, opaque, separated from the 

 body of the perithecium by a subhyaline zone; the apex broadly hyaline, 

 truncate, somewhat angular. Receptacle elongate throughout ; the basal 

 cell relatively small, dark brown, somewhat contrasting, the rest pale 

 brownish yellow to dark brown; distally more or less conspicuously 

 marked by scattered brown warts ; cell VI very long and slender, over- 

 lapping cell II for some distance, the cells above it also unusually elon- 

 gate ; cell III very long and slender, separated from cell II by a narrow 

 horizontal septum; cell V relatively small. Insertion-cell somewhat 

 oblique, thick, black, not abruptly narrower than the cells below it. 

 Outer appendage simple, short, the basal cell several times longer than 

 broad, the remainder more slender, brown, contrasting with the basal 

 cell. Inner appendage consisting of a basal cell more than half as long 

 as that of the outer, bearing distally on either side a short simple branch 

 similar to the outer appendage l)ut paler. Perithecia 271 X 55 |U. 



