350 



THAXTER. MONOGRAPH OF THE LABOULBENIACE.E. 



which is rather small and thick; deep, slightly reddish, brown, the deep suffusion continuous with a 

 corresponding external coloration of the basal cell of the outer appendage and the three to four lower cells 

 of the outer branch, which arises from it and which curves more or less strongly outward; the distal por- 

 tion curved upward, hyaline, tapering, flaccid, each of the suffused cells giving rise distally, from the inner 

 side, to a more or less erect, simple (or the lower sometimes furcate) hyaline branchlet, the lower cells of 

 which are rather long and slender, inflated; the distal portion tapering, thin-walled, usually becoming 

 flaccid; the inner branch of the appendage furcate above its erect basal cell, the branchlets divergent and 

 similar to those of the outer branch, or short and bearing antheridia usually in pairs; the inner appendage 

 consisting of a basal cell about as large as the outer, bearing a hyaline branch on either side which is usu- 

 ally furcate above its basal cell, the branchlets similar to those of the outer appendage. Spores about 

 40 X 4 ti. Perithecia 80-90 X 25-30 ft. Receptacle 90-125 /i. Appendages 150-200 /t. Total length 

 to tip of perithecium 175-220 /*. 



On legs of Casnonia subdistincta Chaud.; British Museum, Biologia Collection, No. 704. (Mexico ?) 



This species is in some respects not unlike L. Casnonice. Its appendages, however, belong to the 

 type illustrated by L. Planetis and L. Hclluodis, and easily distinguish it from any of the forms of L. 

 polyphaga, or of other species with which it might possibly be confused. 



Laboulbenia Stomonaxi Thaxter. Plate LIV, fig. 1G-17. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 54. June, 1902. 



Perithecium hyaline, becoming tinged with brown, less than one half free; short, the outer margin 

 nearly straight, bending rather abruptly inward at the tip; the inner margin converging to the apex from 

 its point of union with cell V; the tip rather abruptly distinguished, broad; the apex nearly flat, the lips 

 hardly prominent. Receptacle yellowish or hyaline, with faint brownish shades; the basal cell usually 

 bent, the subbasal with deeper brown suffusions; cell III more or less deeply suffused with brown, its 

 thick outer wall opaque or nearly so; cells III and IV subequal, several times longer than broad; cell V 

 long-triangular. Insertion-cell thick, black, contrasting, wholly free, separated from the perithecium 

 by nearly the whole upper margin of cell V. Outer appendage curved strongly outward, hyaline on its 

 inner side, deeply suffused on the outer concave side, the suffusion continuous with the insertion-cell; 

 consisting of a small number of cells, the basal relatively long, the rest producing suberect hyaline branch- 

 lets distally on the upper side: basal cell of the inner appendage smaller, the subbasal cell usually bearing 

 two branchlets. Spores 50 X 5 p.. Perithecia 65 X 25 p. Receptacle. 100-1 10 p. Appendages 50-75 p 

 approximately. Total length to tip of perithecium 130-140. 



On the margin of the left elytron of Stomonaxus sp., Java; Paris Museum, No. 93. 



In the types of this small and peculiar species, the appendages are more or less broken, even in the 

 youngest specimens. It is distinguished by the conformation of the distal portion of the receptacle, and 

 the deep lateral suffusion of the latter, as well as by the entire absence of suffusions even at the tip of 

 its perithecium. The spores are large for so small a form, nearly equalling the perithecium in length. 

 It does not appear to be nearly related to any other described species. 



Laboulbenia Helluodis Thaxter. Plate LVIII, figs. 11-12. 

 Proc. Am. Acad. Arts and Sci , Vol. XXXVIII, p. 41. June, 1902. 



Perithecium becoming rich brown, free, usually somewhat, broader distally, slightly inflated; the 

 basal-cells forming a clearly defined, somewhat constricted, short neck; the tip abruptly distinguished, 

 went very slightly outward, opaque except the broadly hyaline or subhyaline, broadly rounded lips. Basal 

 cell of receptacle hyaline or subhyaline, inflated, broader than, and contrasting with, the opaque sub- 

 basal cell, which is of about equal length and forms a constricted region; the distal portion of the re- 

 ceptacle small, rather abruptly broader, sub-triangular, the external margins even; cells III, IV and VI 

 subequal, more or less deeply suffused with brown; cells III and IV more deeply suffused externally, about 

 half the upper margin of cell IV free and forming a distinct prominence external to the jet black insertion 



