NEW INDO-MALAYAN LABOULBENIALES. 39 



process from the receptacle, quite hyaline; consisting of a basal cell 

 and two or three smaller terminal cells from which a group of branches 

 arises reaching to about the middle of the perithecium, once or t .vice 

 branched, the lower branchlets antheridial, others sterile, rather slen- 

 der, with curved or slightly recurved tips. Perithecium straight or 

 rather strongly curved, rather slender and long, the stalk-cell about as 

 large as the basal cell of the appendage beside it, the basal cells rela- 

 ti\'ely large, the body somewhat crooked and ending in a snout-like 

 tip, the apex broad, rounded, the outer lip-cell somewhat more promi- 

 nent. Perithecia 75-100 X 16 fi, the stalk-cell, 12 X 8 ju. Recep- 

 tacle including foot 25-30 yu, its spur-like process 35-40 ^t. x\ppendage 

 including branches 55-65 /jl. Total length to tip of perithecium 120- 

 150 M- 



On Mcdon hirmanus Fauv., No. 2119, Borneo (Type) on bristles 

 near tip of abdomen on upper side. On M. ochraceus Boisd., Borneo, 

 No. 2369. On M. curt us Kr., No. 2087, Samarang, Java. 



The specimens growing on hairs of the host are somewhat more 

 slender and more strongly curved than those which grow on the body 

 (No. 2369), and the spur-like process is more slender. The latter is 

 similar to those which are developed on many of the species parasitic 

 on Stilici to which the present form is most nearly allied. 



Corethromyces Thinocharinus nov. sp. 



Basal cell deeply suffused above and along its posterior margin, 

 where the suffusion is continuous with that of the foot, above which 

 it forms elsewhere a narrow hyaline contrasting arc, the cell extending 

 upward and outward on the posterior side to form a free blackened 

 \arialjly developed spur-like somewhat divergent prolongation, its 

 inner margin hyaline; sometimes rather short and straight, or longer 

 and subsigmoid, extending beyond the longest branches of the append- 

 age. Subbasal cell usually more or less suffused, translucent, small 

 and angular, extending down beside the basal cell nearly to the foot, 

 from which it is separated by the hyaline area of the former : the short 

 stalk-cell of the perithecium rising from it distally and anteriorly; 

 the appendage subterminally on the opposite side. Appendage hya- 

 line, consisting of usually two or three larger superposed cells, from 

 the upper of which arise several branches, some of their branchlets 

 producing seriate antheridia. Perithecia relatively large, hyaline or 

 faintly yellowish, the basal cells distinct and about as large as the 



