THAXTER. — NEW LABOULBENIACEAE. 49 



distally, as a rule, one terminal and two lateral branches which are 

 usually simple, distally hyaline, somewhat constricted at the septa, 

 hardly reaching to the tip of the perithecium ; basal cell of the inner 

 appendage very small, circular in outline, bearing apparently three 

 branches like the outer. Spores 55 X 5.5 /m. Perithecia 125x32/*. 

 Receptacle 150 X 30 fi. Appendages about 90 /x. Total length to tip 

 of perithecium about 250 fi. 



On the elytra and upper surface of the abdomen of Oedichirus nov. sp. ; 

 Sharp Collection, No. 1154; Rio de Janeiro, Brazil. 



Laboulbenia pallida nov. sp. 



Hyaline, becoming faintly suffused with yellowish brown. Perithecium 

 one half or less free, concolorous or slightly darker, stout, erect ; the tip 

 small, usually well distinguished, bent outward ; the lip-cells outwardly 

 oblique, the inner much more prominent, rounded distally, wholly suf- 

 fused, except the edges, with dark distinctly reddish brown. Receptacle 

 normal, or often abnormally septate, more commonly as a result of one 

 or two distal divisions of cell V. Insertion-cell broad, reddish brown, 

 transparent but contrasting, irregular in form, often oblique in position, 

 being carried out free from the base of the perithecium from which it 

 is separated by the partly free upper margin of cell V, sometimes once 

 divided vertically; an external distinct similar accessory insertion-cell, 

 bearing a single appendage and standing in direct relation to one of 

 the subdivisions of cell V is rarely present. The appendages hyaline, 

 in general normal, the outer basal cell twice or more than twice as 

 large as the inner, bearing usually two branches which may be once 

 branched, one of them sometimes an antheridial branch ; the basal 

 cell of the inner appendage producing usually a branch on either side, 

 which may bear only short antheridial branchlets or longer simple 

 sterile ones. Autheridia relatively large, stout, single or in pairs. 

 Spores 75x6,u. Perithecia 125-150 X 60-70 /x. Receptacle 220- 

 300 ju. Longer appendages 150 /x. ^ Total length to tip of perithecium 

 290-380 ft. 



On elytron of Clivina fasciata Putz., St. Geronima, Guatemala; 

 British Museum, No. 674. On G. dilutipennis Putz., Mexico ; British 

 Museum, No. 675. 



Laboulbenia perplexa nov. sp. 



Perithecium very large and long, nearly twice as long as the recep- 

 tacle, dull translucent olive brown, or becoming blackish brown, straight, 

 VOL. xxxviii. — 4 



