THAXTER. - 



MONOOK AIMI OK TINO LABOTJLBENIACEiE. 



subtended by a blackish suffusion of no great size. Receptacle normal, rather short and stout, the basal 

 and subbasal cells slightly prominent anteriorly, of nearly equal length, the walls very thick and striate. 

 Appendages normal, the outer consisting of a black-brown basal cell, twice as long as broad, hearing dis- 

 (ally the two divergent branches, which arc mostly once branched (antcro-posteriorly), all the lower cells 

 suffused with brown, becoming hyaline toward the tips: the inner appendage consisting of a basal cell, 

 slightly shorter than that of the outer, paler brown, bearing the normal branch on either side; the branch- 

 lets more or less elongate, or bearing loose tufts of anthcridia. Perithecium 240 X 75 ft, including the 

 terminal projections, which measure 25 X 22 fx. Receptacle 225-250 ft. Total length 150 X 115 ft. 

 Appendage 200-300 ft. 



On Urarhinua armiger Dej., Cape of Good Hope; Berlin Museum, No. 982. 



This species is closely allied to L. Rougetti, being similar in color and having the same appendages; 

 but (lifters in the subterminal outgrowth at the tips of the perithecium which renders the pore lateral on 

 the inner side. 



Laboulbenia dubi a Thaxtcr. Plate LV, fig. 1. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 35. June, 1902. 



Perithecium dark brown, rather long, mostly straight externally, the tip small, usually abruptly 

 distinguished; the lips outwardly oblique, the blackish inner lip-cell more prominently rounded and sub- 

 tended by a slight, usually distinct rounded elevation especially on the inner side, which gives the tip a 

 characteristic outline; the body dark translucent brown, wholly free. The receptacle very thick-walled, 

 pale dirty brownish yellow, deeper distally. The basal cells of the appendages subequal, the outer bear- 

 ing two branches radially, which are simple, or the inner once branched above its subbasal cell; the 

 anthcridia borne singly at the lower septa or on short branchlcts: all the ultimate branches of both 

 appendages, about six, relatively stout, erect, rather closely septate, about six- to eight-celled, curved 

 slightly outward, tapering to the blunt extremities, which but slightly exceed the apex of the perithecium. 

 Spores 55 X5 /i. Perithecia 165-185 X 55-65 /i. Receptacle 220-325 X 75 ft. Longer appendages 

 220 ft. Total length to tip of perithecium 440-500 ft. 



On the abdomen of PhUonthus politics Linn., Alverstokc, England; British Museum, No. 363. 



With the exception of a few immature individuals on PhUonthus functus Grav. from Europe (British 

 Museum No. 427) which may belong to this species, no other form on the thousands of PhiUmihi which 

 I have examined, has been found which at all resembles the present one. It is perhaps too near L. rigida, 

 but differs in its copious appendages and in the often pronounced subterminal enlargement of the peri- 

 thecium. One other species of Lahoulbenia has been seen on PhUonthus (exclusive of Cafius on which 

 L. Cafii and a second undetermined form are known to occur) which is represented by a single immature 

 specimen from P. deconis Grav. in the British Museum, No. 423, Heidelberg; but this species, with its 

 very copiously branched appendages, which recall those of L. Brachini, is entirely different from the 

 present form. 



Laboulbenia Laton.e Thaxter. Plate LVI, figs. 3-4. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 45. June, 1902. 



Perithecium usually deep brown, nearly opaque, the tip large rather coarse lipped, free from the 

 receptacle. The receptacle normal often greatly elongated through the development of cell II, insertion- 

 cell borne free from the receptacle by the elongation of cells IV and V. The outer appendage consisting 

 of a large, broad, subhyaline basal cell, which gives rise to two, often three, or rarely more, branches in a 

 crest-like radial series, their basal cells small squarish subhyaline; producing, as a rule, a pair of greatly 

 elongated simple deep rich brown flexuous tapering branchlets; the basal cell of the inner appendage 

 giving rise in general to a branch on cither side, one of which resembles the branches of the outer append- 

 age, and gives rise to long slender brown branchlets; the other commonly short, and bearing one or two 

 antheridial branchlets; the small straight anthcridia borne in compact groups of two to four members. 



