THAXTER. — NEW LABOULBENIACE^E. 441 



hardlv broader than the stalk-cell which is hyaline contrasting thick- 

 walled and about twice as long as broad. Receptacle small, suffused 

 with brown, two celled; the septa somewhat oblique, the upper cell con- 

 trasting abruptly with the colorless stalk-cell, aud giving rise laterally to 

 the slightly divergent appendage, which consists of from five to six 

 nearly opaque brown cells, separated by oblique septa ; each producing 

 distally on the inner side a short hyaline branch, sometimes once 

 branched. Spores about 40 X 3.5 p.. Perithecia 140-150 X 40-45 /x, 

 the stalk-cell 35 X 20 //,. Receptacle not including foot 27-35 X 10 fx. 

 Appendage, mostly broken 70-100 //.. Total length to tip of perithecium 

 230-245 fi. 



Ou Lathrobium lllyrieum Dej., British Museum, No. 384. Algeria(?). 

 On superior surface of abdomen. 



Spkaleromyces propinquus nov. sp. 



Like S. obtusus in size, form, and color, except that the tip of the 

 perithecium is symmetrical or nearly so, the lips forming a broadly 

 rounded blunt termiual prominence with sometimes a slight median ele- 

 vation, while at the base the tip is characteristically broadened through 

 the presence of distinct lateral elevations on either side : the stalk-cell 

 rather abruptly swollen below the basal cells of the perithecium. 



On Lathrobium, sp. indet., British Museum, No. 383. Europe. On 

 superior surface of abdomen. 



This species is doubtfully separated from S. obtusus on account of the 

 very different conformation of the tip of the perithecium, which, as the 

 material in either case occurred in the same position on the host, can 

 hardly be due to position of growth. 



Sphaleromyces atropurpureus nov. sp. 



Perithecium large, purplish, more or less distinctly curved away from 

 the appendages, tapering below, ofteu broader distally above the middle, 

 tapering thence slightly to the tip, which is usually not distinctly differ- 

 entiated ; the apex small truncate or slightly papillate ; the basal cells 

 large, as long as or longer than the stalk-cell, dull amber brown. Basal 

 cell of receptacle large, not greatly elongated, tapering below, the nearly 

 hyaline distal portion obliquely distinguished from the deeply suffused, 

 partly opaque portion of the cell below ; the subbasal cell subtriangular. 

 Appendage consisting of about five cells decreasing in size from below 

 upward, the septa nearly horizontal ; those above the basal cell giving 



