Til A XT Kit. 



MONOGRAPH OF THE LABOULBENIACEjE. 



Labotjlbenia Hellxjomorph^i Thaxter. Plate I, XIII, figs. L3 14. 



I'roc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 42. June, 1002. 



Perithecium straight or slightly divergent, hyaline to yellowish, becoming somewhat tinged with 

 smoky brown; the basal wall-cells forming a scarcely apparent short stalk; the blackish tip abruptly dis- 

 tinguished; the coarse translucent lip-edges outwardly oblique. Receptacle normal, hyaline to straw-vcl- 

 low, distally obscurely punctate and slightly suffused with faint brownish shades; cells III, IV and VI 

 subequal; cell V rather large, its inner margin more than one half free, nearly vertical, the thick, black, 

 slightly oblique insertion-cell thus free above the base of the perithecium. Basal cell large, more or less 

 suffused with brown; the two or three cells above it obliquely superposed, hyaline; all (lie cells bearing 

 distally and externally single simple branches, the basal part consisting of two cells, becoming clear brown, 

 constricted at the dark septa; the distal part hyaline, or more faintly brownish, distinguished by a deep 

 brown suffusion at the base: the inner appendage consisting of a very small hyaline basal cell, giving 

 rise on either side to a very short branch, consisting of from one to two cells; the basal one bearing an 

 antheridial branch, consisting of a single rather long cell terminated by a solitary brownish antheridium 

 seated like the branch on a blackened septum. Spores 70 X 7 ft. Perithecia 130-140 X 35 40 /«. Re- 

 ceptacle 220-180 ti. Appendages 1S5-300 ll Total length to tip of perithecium 290-325 ;l. 



On Helluomorpha melanaria Reiche, Ega, Amazon; British Museum, No. 527. On Pleurdcan- 

 thus brevicoUis Dej., Surinam; Berlin Museum, No. 942. On the elytra. 



This species bears a general resemblance to small forms of both L. triordinata and L. Trichognathi. 

 It is most easily distinguished from these, as well as from other known species of this section from the 

 fact that not only the antheridial branch, but also the antheridium itself, is distinguished by a blackened 

 septum. From L. triordinata, which it most nearly approaches, it is further distinguished by its normally 

 black insertion-cell, and undeveloped inner primary appendages, which bear at most only two, or possiblv 

 very rarely, three, branches each. 



Labotjlbenia minimalis Thaxter. Plate LXII, figs. 10-11. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 188. Dec, 1899. 



Perithecium free, becoming olivaceous to smoky brown, mostly straight, the basal wall-cells form- 

 ing a very short stalk, the tip rather abruptly distinguished, mostly straight, symmetrical, black, distally 

 hyaline. Receptacle olivaceous yellow with brown suffusions; cell I slightly suffused with brown, some- 

 what longer than cell II, both rather narrow; the receptacle expanding rather abruptly above cell II; 

 cells III, IV, and V nearly equal becoming rather deeply suffused with brown. Insertion-cell broad, 

 blackened. Outer appendage consisting of a large triangular basal cell becoming deep blackish brown, 

 above which four to six small nearly hyaline cells obliquely superposed, or with their long axes nearly 

 vertical, form a series which runs obliquely tow ard the perithecium, each cell producing externally a single 

 simple branch consisting normally of three cells; the basal subhyaline, much longer (especially in the 

 upper branches) than the subbasal, which is somewhat suffused, broader below, slightly inflated, distin- 

 guished above and below by blackened septa; the terminal cell short hyaline, mostly somewhat swollen 

 and soon disorganized : the inner appendage consisting of a series of cells similar to that of the outer, 

 usually four in number, each bearing an antheridial branch which consists of a subhyaline relatively long 

 stalk-cell, seated on a blackened septum and bearing distally a pair of slightly divergent long brown 

 antheridia about equalling the stalk-cell in length; their tips usually exceeding those of the sterile branches 

 of the outer appendages. Perithecia 100-110 X 30 li. Total length to tip of perithecium 200-250 ft, 

 to insertion-cell 110-125 ii; greatest width 45 a. Appendages GO-90 ft. 



On Galerita sp. Paris Museum No. 74, Venezuela, on the mid-elytron. On a small species of Galerita 

 with red prothorax from Guayaquil, Ecuador, Berlin Museum, No. 965. 



This small species, of which sufficiently abundant and perfect material has been examined, is one of 

 the most readily recognized members of this section, distinguished by its small size and the character of 



