THAXTER. - 



MONOGRAPH OP TUP LABOULBENIACEiE. 



277 



Eucantharomyces Euprocti Thaxter. Plate XXXVIII, figs. 27 30. 



Proc. Am. Acad. Arts and S(ri., Vol. XXXV, p. 117. April, 1900. 



Perithecium straw-colored to pale amber-brown, .slightly asymmetrical, somewhat inflated below; 

 the upper half tapering gradually to the blunt asymmetrical apex, the inner lip-cell rounded flat darker 

 amber-brownish slightly prominent; the outline of the mature perithecium becoming more or less corru- 

 gated through the appearance of three to five rather broadly rounded successive elevations, corresponding 

 to the distal and basal septa of the two lower tiers of wall cells, and to a median protrusion of these cells, 

 where five are present; stalk-cell becoming slender, mostly slightly shorter than the receptacle; the basal 

 cells small. Receptacle relatively rather long, the cells nearly equal. Appendage generally longer than 

 the receptacle, its basal and subbasal cells nearly equal; antheridial cells in three rows of five, three, 

 and two cells each, the marginal cell bluntly rounded above and extending nearly to the base of the sub- 

 basal cell; the discharge-tube large) bent outward or obliquely upward. Spores 50 X 4.5 /x. Pcrithecia 

 160-170 X 48 /t, stalk-cell 70 X 15 fi. Receptacle 85-90 X 25-30 [i. Appendage 110 p, antheridium 

 41 X 22 /(, the discharge-tube lit) /*. Total length to tip of perithecium 310 p.. 



On Euproctus quadrinus Bates, British Museum (Biologia Coll.), No. 731. Volcan de Chiriqui, 

 Panama. 



A few individuals of this species were found at the base of the eltyra of the host. It is well marked 

 by the abrupt distinction between the base of the perithecium and its stalk-cell, by the broad tip and 

 stout somewhat irregular form of the latter, and by the small number of the antheridial cells. 



Eucantharomyces Atrani Thaxter. Plate XXXVIII, figs. 1-3. 

 Additional material of this species has been obtained on specimens of Atranus pubescens from Wash- 

 ington, I). C, and from Kansas, in the collection of the U. S. National Museum. As this material is very 

 much better than the types, both of which were immature or injured, additional figures are given here- 

 with. The antheridium appears to be constant in structure, the rows of antheridial cells containing 0 

 (rarely 5), 4 and 3 cells respectively, the species is otherwise ill defined and without distinctive peculiarities. 

 The antheridium may be distinguished by a slight terminal apiculus. It should be noted that the margi- 

 nal cell of the antheridium is not septate above, as represented in Plate VII, fig. 27, of my Monograph. 



Eucantharomyces Callid.e Thaxter. Plate XXXVIII, figs. 31-34. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 418. April, 1900. 



Perithecium rather narrow, slightly inflated, tapering from about the middle to the blunt tip which is 

 rather abruptly distinguished externally, sometimes bent outward, its distal margin outwardly oblique; 

 the inner lip-cell relatively small, projecting slightly externally, but not abruptly distinguished on its inner 

 side; the outline of the perithecium becoming inconspicuously corrugated through the presence of some- 

 times as many as eleven successive elevations; the basal cells elongated, the base of one of the outer exter- 

 nal to the stalk-cell from which it is separated by an oblique septum longer than the width of the stalk-cell 

 which is narrower below and about equal to the basal cells in length, or somewhat shorter. Receptacle 

 symmetrically sulcate distally, rather long, the two cells nearly equal. Appendage rather long, its basal 

 cell extending downward and lying external to the upper half of the subbasal cell of the receptacle; the 

 subbasal cell more than twice as long as broad, the marginal cell reaching to its base and distally prominent. 

 Antheridium relatively small, the antheridial cells in three rows of five (six in one instance), four, and 

 three cells respectively, the discharge-tube rather short and stout, erect or bent but slightly. Spores 40 X 

 4 /<. Perithecia 230-205 X 50 p, basal cells 120 p, stalk-cell 103 p. Receptacle 100-120 p. Appendage 

 120-125 (i, antheridium 25 X 38 p. Total length to tip of perithecium average 325 p. 



On Callida sp., Paris Museum, No. 68, Venezuela; on Callida trisiis Bridle, Berlin Museum, No. 

 974, Surinam. 



A species distinguished by its generally slender habit, the large well distinguished tip of the perithe- 

 cium and the parallelism between the stalk-cell of the appendage and the two cells of the receptacle. The 

 figures are both drawm from the original types from Venezuela. 



