372 



THAXTER. MONOGRAPH OF 1 HE LABOULBENIACE^E. 



Laboulbenia distincta Thaxter. Plate LIX, figs. 15-16. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 172. Dec, 1899. 



Perithecium short and broad, wholly united to the receptacle except the tip, clear dark brown, darker 

 distally, the tip large, blackish, somewhat compressed, the lips translucent smoky brown, not prominently 

 distinguished. Receptacle short and stout, the distal portion larger than the basal; cells I, II, and VI 

 transparent yellowish, the rest smoky brown, marked by closely set fine transverse lines; cells III and 

 IV relatively very large, subequal. Insertion-cell two thirds as broad as cells IV-V. Outer appendage 

 consisting of four superposed cells, the three lower flat and subequal; the second subbasal, and third 

 bearing single simple or once branched upcurved branches from their inner sides; hyaline becoming 

 dark brown, the two lower larger and nearly equal, the uppermost cell much smaller almost opaque pro- 

 ducing a similar branch from its inner side and a terminal branch which is deep brown curved outward 

 and upward, slender, simple; the inner branches of the three cells all at first hyaline, mostly once branched ; 

 later developing a dark brown contrasting suffusion above their basal cells: the inner append- 

 age consisting of a small basal cell producing a branch on either side, the basal cell of which is larger 

 than that of the appendage, and bears two branchlets basally suffused with brown like those of the outer 

 appendage. Perithecia 130 X 50 /z. Total length to tip of perithecium 275 fi; to insertion-cell 250 /«; 

 greatest width 95 [i. Appendages, longest 235 [i. 



On margin of elytra of Pericallus cceruleovirens Tat., Brit. Mus. No. 570, Singapore. 



The appendages of this very distinct species are quite different from those of any described form. 

 The receptacle is somewhat similar to that of L. prominens, cells III and IV being relatively very large, 

 each bulging prominently, but separated by a marked constriction. Two mature specimens only have 

 been examined. The tip of the branch at the extreme left in fig. 15, has been supplied, being broken in 

 the adult specimens, though present in the young, fig. 16. 



Laboulbenia acanthophora Thaxter. Plate LVI, fig. 14. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 27. June, 1902. 



Pale smoky brown. Perithecium relatively very large and elongate, the lower wall-cells forming a 

 well-developed stalk, slightly narrower and paler than the main body which is very long, straight, but 

 slightly inflated; the tip stout, more deeply suffused, well differentiated; one of the lip-cells forming a 

 median, terminal, erect, slightly curved and tapering, blunt-tipped, dark brown projection, the lower 

 half broader, the whole more than twice as long as a similar second outgrowth which, arising near its 

 base, curves outward on the right side (the perithecium being considered anterior). Basal cell of recep- 

 tacle subhyaline, more than twice as long as broad, the subbasal subisodiametric, darker brown than 

 the other cells; cells III and VI subequal, lying perpendicularly side by side, both several times longer 

 than broad; cell IV about as long as cell III; cell V small, obliquely separated. Insertion-cell black, 

 well defined. Outer appendage (broken) simple (?) its basal cells blackened; the branches curved 

 outward, externally blackened below, and giving rise above to several successive branchlets. Spores 

 75 X 4.5 jt. Perithecium (main body) 220 X 50 fi; stalk 60 X 30 fi; terminal appendage 60 ft. Re- 

 ceptacle 220 X 65 /i. Appendages (broken) 150 /i. Total length to tip of perithecium 580 /«. 



On the elytra of Pericallus sp.; Sharp Collection, No. 1202; East Indies. 



The general habit of this species, which is represented by a single type specimen, is peculiar. The 

 perithecium is much longer than the receptacle, which is shaped like a butter-spat, cell I forming the 

 handle, cell II being somewhat abruptly broader, and cells III and VI being almost paired. The species 

 is most nearly related to L. ceratophora, from which it differs, however, in numerous important points 

 which are too obvious to need enumeration. 



