16 PROCEEDINGS OP THE AMERICAN ACADEMY. 



Female individual. Primary receptacle consisting of two superposed 

 cells terminated by a single abruptly smaller sterile cell, which is 

 slightly longer than broad and is terminated by a bluntly pointed append- 

 age similar to that of the male, but larger; the subbasal cell much 

 enlarged, somewhat inflated, the fertile branch apparently at once furcate 

 so that two secondary receptacles are formed symmetrically placed on 

 either side of and just below the primary receptacle. Secondary recep- 

 tacles distinctly yellowish externally, consisting of a nearly horizontal 

 series of about ten sterile cells, very narrow from the great elongation 

 of their transverse axes which are vertical in position, and so arranged 

 as to cover more or less completely the single fertile cell, which is sub- 

 triangular and gives rise to a solitary perithecium. Base of the peri- 

 thecium nearly as broad as the secondary receptacle, forming a short 

 stout neck : perithecium relatively large, the ascigerous portion some- 

 what longer than the distal part, very slightly inflated, nearly isodia- 

 metric, the base of the trichogyne persistent as a rather conspicuous 

 hyaline projection between it and the distal part which is but slightly 

 narrower, hardly tapering, the large lateral cells thick-walled, the rows 

 similar on either side and terminating in large incurved tapering bluntly 

 pointed brownish-yellow unicellular projections, which surmount the 

 perithecium like a pair of mandibles, the inner somewhat shorter and 

 straighter : the short, pointed apex included between their bases and 

 bent slightly inward. Spores about 18x2/x. Perithelia including base 

 200 X 36 fi ; the terminal projections, longer, 35/*. Secondary recepta- 

 cles 35 X 20-35 p. Primary receptacle including sterile terminal cell 

 20 X 7 fi. Total length to tip of perithecium 220-250 p. 



On antennae of a wingless roach, Mauritius (?) ; Mus. Comp. Zool., 

 No. 1353. 



Herpomyces Diplopterae nov. sp. 



Male individual; four-celled, the two middle cells roundish-oblong, 

 the distal longer and subcyliudrical, terminated by the usual minute 

 blackish projection ; the subterminal and subbasal cells each producing 

 one or two nearly sessile, or short stalked, antheridia, with well-differ- 

 entiated slender necks. Total length to tips of antheridia about 50 p. 



Female individual. Primary receptacle similar to male, the sub- 

 terminal and subbasal cells subcyliudrical, longer than broad ; the fertile 

 branch producing two symmetrically placed secondary receptacles, as in 

 H. forficularis, the sterile external cells yellowish, somewhat larger and 

 more distinct, about twelve or more in number; the series extending 



