170 PROCEEDINGS OF THE AMERICAN ACADEMY. 



tinctly punctate, very long, tapering very slightly nearly to its distal 

 extremity, cell V producing two outgrowths, one on either side, erect, 

 usually similar, brown, distally somewhat enlarged, the rounded tips 

 often bent sliglitly outward, extending to or beyond the tip of the peri- 

 thecium. Appendages consisting of two (or more?) basal cells from 

 which several protrusions arise bearing groups of branches which "are 

 several times branched, forming a dense tuft not as long as the outgrowths 

 from cell V, the lower septa brown or blackish, between the short cells. 

 Perithecia 170-190 X 48-50 /x,. Total length to tip of perithecium 750- 

 880 /i; to insertion -cell G80-810/i ; cell II about 425 /x long. Out- 

 growths from cell V, 58 /i. Appendages 50^. 



On Orectogyrus specular is Aube, Paris Museum, No. 100, Gold 

 Coast, W. Africa. Margin of elytra. 



Laboulbenia Darwinii nov. sp. 



Perithecium hyaline becoming pale straw or amber-yellow, sometimes 

 with a shade of brown, relatively small, its upper third or less free from 

 the receptacle, the tip black, abruptly distinguished, the broad lip-edges 

 translucent purplish brown. Receptacle relatively stout, indistinctly 

 punctate with short lines or dots of darker yellowish color, cells II, III, 

 and IV often unusually broad. Insertion-cell well developed, deep 

 purplish brown or black. Outer ajipendage consisting of a short angular 

 brownish basal cell, which bears an outer and an inner branch distally, 

 the outer simple or once branched above its basal cell, the inner mostly 

 simple ; the outer branchlet mostly shorter, divergent, often deeply 

 suffused with reddish brown, the rest less deeply colored, rigid, erect. 

 The inner appendage consisting of a smaller basal cell which may pro- 

 duce' a single branch, or two placed laterally or antero-posteriorly, short, 

 simple with lateral antheridia or once branched. Perithecia 100 X 

 30-35/1. Total length to tip of perithecium 150-275 /x; to insertion-cell 

 135-250 /i. Appendages, longest 200-250 fi. 



On Oezena parallela W., Brit. Mus. No. 572, Rio de Janeiro (legit C. 

 Darwin), on Pachyteles spp., Paris Mus. No. 137, South America, Hope 

 Collection, Nos. 284 and 285, Brazil. Occurring usually at the base of 

 the posterior legs. 



Laboulbenia denticulata nov. sp. 



Perithecium free, olivaceous with blackish shades below the paler tip, 

 rather narrow, straight ; the tip broad, one of the inner lip-cells forming 

 a short brown conical terminal prominence which is straight or bent 



