THAXTER. — NEW LABOULBENIACE.E. 187 



Laboulbenia melanopus nov. sp. 



Peritheciuui free except at the base, large, rather deeply suffused with 

 smoky brown, translucent, not contrasting ; the subdistal wall-cells 

 lighter, tapering abruptly to the narrow somewhat incurved tip, the 

 inner lip-cells only deeply blackened. Receptacle somewhat curved, 

 tapering below to the short slender basal cell which is smoky black 

 except at its base, the distal cells gradually suffused with yellowish 

 brown. Insertion-cell opaque only externally, the basal cells of the 

 appendages becoming apparently divided into several cells which are 

 opaque or nearly so and indistinguishable in the mature plant, giving 

 rise to numerous branches the basal cells of which are distally inflated 

 and bear terminally numerous brauchlets (about six to ten), the latter 

 very slender, flexuous, not as long as the peritheciuui. Spores about 

 60 X 4.5 fx. Perithecium 290 X 70 /x. Total length to tip of perithe- 

 cium 675 /x ; to insertion-cell 400 /x. Appendages, longer 140 /x. 



On Carabid (allied to ITarpalus?), Paris Mus. No. 115, Africa. On 

 tip of abdomen. 



Laboulbenia microscopica nov. sp. 



Perithecium one half or wholly free, pale olivaceous, somewhat inflated, 

 tapering to the relatively long narrow subtruncate blackened tip which 

 is bent slightly inward. Lower half of receptacle greatly reduced in size, 

 the basal cell hyaline or nearly so, the rest suffused with dark brown, 

 cell III paler, cell II broader than long, cells III to V relatively large, 

 bulging prominently outward beyond and below the insertion-cell. Outer 

 appendage consisting of a basal cell which becomes sub-triangular through 

 the protrusion of its upper outer angle which renders its distal margin 

 twice as broad as the basal cell of the single branch which rises from its 

 upper inner half. The inner appendage arising from a much smaller 

 basal cell which produces two branches. Spores about 35 X 3 ii. Peri- 

 thecia 75-93 X 27-34 /x. Total length to tip of perithecium 120-140 n ; 

 to insertion-cell 75-90 /x. Greatest width 45-60 ti. Appendages 

 about 70 jx. 



On Pelmatellus nitescens Bates, Brit. Mus. (Biologia Coll.), No. G83, 

 Vera Paz, Guatemala. On elytra. 



Laboulbenia microsoma nov. sp. 



Perithecium free, several times as large as the receptacle, smoky brown 

 darker basally and distally, the longitudinal septa subhyaline, the outer 

 margin concave, the inner convex ; a subterminal external small rounded 



