THAXTER. — NEW LABOULBENIACE.E. 179 



terminal hyaline tapering portion about twice as long : the inner append- 

 age consisting of a basal cell blackened below, from which arises on 

 either side a series of superposed cells like that of the outer appendage 

 and similarly branched except that one or two of the lower cells of the 

 series bear antheridia, single, sessile or on a one-celled stalk. Perithecia 

 200-285 X 37 it (the neck, 18-20 ft, included). Total length to tip of 

 perithecium 500-670 it ; to insertion-cell 275-370/*; greatest width 55 it. 

 Spores 65-70 X 5 it. Appendages 150-175 it. 



On Gahrita sp., Paris Museum, No. 160, Rosario, Argentine Republic. 

 On left side of inferior prothorax. 



Laboulbenia gibbifera nov. sp. 



Perithecium free or nearly so, somewhat narrower than in L. Der- 

 cyli, the apex narrower and more abruptly distinguished, the lips distinct, 

 turned slightly inward; an external outgrowth just below the blackened 

 tip, which it may exceed in length, forming a free protuberance straight 

 or bent sidewise or 4 inward, its apex evenly rounded or slightly inflated, 

 its outer margin continuous with the nearly straight margin of the peri- 

 thecium. Receptacle much as in L. Dercyli, more slender and shorter, the 

 appendages pushed outward by the enlargement of cell V. Appendages 

 much as in L. Dercyli, the basal cells projecting upward more prominently, 

 a group of branches in almost all cases arising apparently from cell V or 

 from a small cell separated from it, the lower segments of the branches 

 clearly differentiated and bearing externally three to six external and ter- 

 minal branchlets. Perithecium 150-167 X 50 it. Total length to tip 

 of perithecium 400-450 it; to insertion-cell 275-340/x. Appendages 

 150 it. 



On Dercylus tenebriosits Laf. (Eurysoma tenebrioides?), Hope Coll. 

 No. 32S. Para; Brit. Mus. No. 586, " S. America." Inferior surface of 

 thorax and prothorax near base of two anterior pairs of legs. Possibly 

 a variety of L. Dercyli. 



Laboulbenia heterocheila nov. sp. 



Perithecium olive-brown united to cell IV nearly to its base, rather 

 short, inflated below, tapering distally, the tip not abruptly differentiated, 

 blackened below, the four lip-cells all differently modified : of the two inner 

 lips one produces an erect rather slender brown finger-like terminal out- 

 growth, the other a shorter much broader paler outgrowth turned inward 

 nearly at right angles : of the two outer lips one forms merely a rounded 



