THAXTER. — NEW LABOULBENIACE.E. 433 



Corethromyces purpurascens nov. sp. 



Perithecia dull purple, mostly slender straight or slightly curved, 

 nearly isodiametric or the outer margin convex ; the base slightly broader, 

 the junction of the basal and subbasal and of the subbasal and subter- 

 minal wall cells indicated by a distinct protrusion in well developed indi- 

 viduals, 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 dis- 

 tinctly inflated basally ; the stalk-cell as in C. Gryptobii 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 series 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 are quite hyaline, more or less flexuous and taper- 

 ing. Perithecia 100-150 X 25 /a. Total length to tip of perithecium 

 175-275 jjl. Longest branches of appendages about 140 /x. 



On Cryptobium capitalum, Paris Museum, No. 172, Brazil; on Cryp- 

 tobinm sp. indet., British Museum, No. 494, Balthazar, Grenada, West 

 Indies. 



EUCORETHROMYCES nov. genus. 



General form as in Rhadinornyces, the receptacle consisting of two 

 superposed cells, the upper giving rise to the perithecium and appendage. 

 Perithecium as in Rhadinornyces, stalked. Appendage consisting of 

 several superposed cells the distal one bearing terminally a series of 

 branches which produce free flask shaped antheridia laterally, borne on 

 short lateral branchlets or sessile. 



Eucorethromyces Apotomi nov. sp. 



Hyaline becoming tinged, especially the perithecium, with pale amber 

 brown. Receptacle short, the subbasal cell usually smaller, its axis coin- 

 cident with that of the stalk-cell. Perithecium rather slender, inflated 

 toward the base, the distal half slender tapering slightly to the blunt 

 unmodified apex, the basal cells rather small, nearly equal, the stalk-cell 

 stout and well developed. Appendage divergent almost at right angles 

 to the axis of the receptacle, its basal cell usually more than twice as 

 large as the subbasal cell, which bears distally aud anteroposteriorly a 

 single, or partly double, row of from four to six branches, some of them 

 vol. xxxv. — 28 



