THAXTER. 



- mo.\o<;i<ai>ii or TUN la H( ) r l 15 1; \ i. \c !•;.!]. 



319 



siiblcnninal wall-cells indicated by a distinct protrusion in well developed individuals, in which the tip 

 is thus moderately well distinguished; although in most cases, especially in smaller specimens, the margin 

 forms an unbroken line from base to apex, the perithecium being sometimes distinctly inflated basally; 

 the stalk-cell as in d. Crypfnbii, hyaline above, becoming opaque brown below. Basal cell of the receptacle 

 purplish or brownish translucent, the rest opaque indistinguishable from the almost wholly opaque main 

 body of the appendage, the oblique inner margin of which is followed by a scries of hyaline or purplish cells, 

 three or more in number which give rise to the erect branches; the primary branches sometimes purplish 

 near the base but producing an erect tuft of branches and branchlets which arc quite hyaline, more or 

 less flexuous and tapering. Perithecia 100 150 X 25 p. Total length to tip of perithecium 175 275 

 Longest branches of appendages about I 10 //. 



On Cryptobium capifalum, Paris Museum, No. 172, Brazil; on Cryptobium sp. unlet., British Museum, 

 No. 494, Balthazar, Grenada, West Indies. 



Although distinguished from the allied C. Crypfobii by no very striking characters, this species can 

 hardly be confused with it on account of its purplish color and hyaline appendages, which are suffused 

 only about the base. 



CORETHROMYCES StIIICI Thaxter. Plate L, figs. 6-9. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVII, p. 42. June, 1901. 



Perithecium amber-colored, with a faint brownish or reddish tinge, somewhat irregular in outline 

 through a spiral twist in the wall-cells, which are distinguished from one another by slight furrows; slightly 

 inflated toward the base, tapering to the broad blunt apex; the tip not at all distinguished; the basal and 

 stalk-cells well developed, hyaline, the latter bent abruptly upward from its insertion. Basal cell of the 

 receptacle small, hyaline on the anterior side just above the foot, but otherwise blackish brown or opaque, 

 bulging posteriorly above the foot; distally and posteriorly proliferous to form a straight, black, blunt 

 finger-like outgrowth, which lies external to the appendage; the subbasal cell nearly hyaline, subtriangu- 

 lar, separated from the basal cell by a very oblique septum. Appendage hyaline, consisting of a nearly 

 free and nearly isodiametric stalk-cell, above which are three or four cells which produce a close tuft of 

 hyaline branches on the inner side. Spores about 30 X 3 p. Perithecia 80-85 X 22 p, its stalk-cell 

 30 X 18 p. Receptacle 25 p, the outgrowth 55 X 7 p. Appendage, including branches, 50 p. Total 

 length to tip of perithecium 150 p. 



On the abdomen of StUicm sp., Intcrlaken, Switzerland. On Stilicus rufipes Genu., Berlin Museum, 

 NO. 836. Europe. On S. angularis Lee, Arlington, Mass. 



The American specimens of this species appear to be identical with the European material. It is 

 principally peculiar for the blackened proliferation of the basal cell, which is somewhat variably developed 

 in different individuals. It is a small form not readily seen as it grows more or less appressed on the 

 black abdomen of its host, an ant-like staphilinid common in dry brush piles. 



Corethromyces longicaulis Thaxter. Plate L, figs. 10-11. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII. p. 21. June, 1902. 

 Receptacle abnormally developed, very small, the basal and subbasal cells arising almost side by side 

 immediately above the foot; the basal cell long and narrow, strongly curved so as to become concave 

 externally, its wall very thick, the cavity becoming almost obliterated; the distal half nearly horizontal, 

 slightly bulging and becoming wholly deep black-brown, except along its upper (in position) margin 

 which is transparent yellowish and closely applied to the lower surface of the basal cell of the appendage, 

 beyond which it hardly projects externally and which thus appears to arise from it; the subbasal cell 

 larger, nearly hyaline externally, convex, bulging below, with a more or less distinct constriction below 

 its slightly enlarged upper portion, which gives rise distally to the broad stalk-cell of the perithecium 

 and sublaterally to that of the appendage. The appendage much reduced, nearly hyaline, consisting 

 of three superposed cells; the basal (stalk-cell) squarish or rounded, the lower half or less of its inner mar- 



