MONOGRAPH OF TI1E LABOULBENIACEiE. 



289 



On Laccophilus maculosus Germ., Connecticut. 



The more or less wedge-shaped apex of the pcrithecium of this very distinct form projects 

 outward abruptly at right angles to the straight outer perithecial margin. The hook-like 

 appendage is quite unlike that of any other species in form and position, and, occurring only on 

 one side, is not seen unless the pcrithecium lies at the right. It occurs with C. spinigerus, C. 

 hyalinui, and rarely 0. marginatus, on the posterior legs of its host. 



Chitonomyces melanurus Peyritsch. Plate XXVI, fig. 19. 



Sitz. d. k. Acail. d. Wissen., Bd. LX VII, p. 251, Plate III, figs. 30-34 ; Wien, 1873 ; Winter Die Pike Deutschl., Bd. II, p. 924, 

 p. 920, fig. 4 ; Sorokiu, Veg. Par. of Man, etc. Vol. II, p. 424, Plate XXXII, fig. 771 ; Saccardo Sylloge, Vol. VIII, p. 

 914; Berlese, Malpighia, Vol. Ill, p. 59. 



Straw colored, becoming faintly brownish. Perithecium slightly inflated near its base, its 

 sub-terminal wall-cells expanded to form a projection from the outer and inner margin, each of 

 which extends a little beyond the small hyaline apex which lies between them ; the outer projec- 

 tion smaller and distinctly brownish, the inner nearly twice as broad and hyaline. The two 

 lower cells of the receptacle nearly equal, forming a rather slender basal portion, above which it 

 expands somewhat abruptly : the terminal and sub-terminal cells deeply blackened, the latter 

 proliferous externally below the insertion of the appendage, which is thus turned inward, and 

 becomes lateral in position, the proliferation extending some distance beyond it, and forming a 

 terminal, translucent, outwardly turned hook. Length of perithecium, 95-100 fx. Total length 

 to tip of perithecium about 150-160 n ; to tip of receptacle, 145-150//.. Greatest width, 

 30-35 fi. 



On Laccopldhis minutus Sturm, and L. hyalinus Dej., Europe. 



This peculiar species, which is the type of the genus, does not appear to occur in this 

 country, its place being taken curiously enough by the succeeding species, which occurs in 

 exactly the same position often in company with G. paradoxus, and exhibits a somewhat similar 

 proliferation of the terminal cell of the receptacle. The material from which the accompanying 

 figure and description were derived was found on a specimen of Laccophilus from Germany in 

 the collection of the Museum at Cambridge. Although Peyritsch placed it in a genus distinct 

 from C. paradoxus, there is no doubt whatever as to the generic identity of the two forms. 



Chitonomyces marginatus Thaxter. Plate XXVI, figs. 20-22 ; Plate VII, figs. 25-27. 



Heimatomyces marginatus : Proc. Am. Acad. Arts and Sci. Vol. XXVII, p. 34. 



Long and slender, at first nearly hyaline, then yellowish. Perithecium straight, then suddenly 

 bent inward below the hyaline, neck-like, strongly curved tip. Basal cells of the receptacle sub- 

 triangular, the sub-basal half as large as the basal, the three cells at the base of the perithecium 

 more than usually developed : the terminal cells all becoming black and opaque at maturity ; 

 the terminal one continued by a squarish outgrowth basally hyaline, at first lateral and external, 

 becoming terminal (the true apex of the cell being pushed inward and becoming lateral), hardly 

 exceeding the tip of the perithecium, which it conceals. Spores, 30 x 3 \x. Perithecia, 95-110 X 

 22 p. Total length to tip of perithecium, 140-160 /t. Basal cells of receptacle, 25 fi. 



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