THAXTER. - 



MONOGRAPH OF THE LABOULBENIACE^J. 



325 



Cell. Appendage consisting of four or five rather flatfish brown eells, decreasing in size from below up- 

 ward, their septa directed obliquely outward and downward, each producing a branch from its upper 

 inner angle, which is simple or one or more times branched, the branchlets subhyaline. Spores about 

 30 X 3 p. Perithecia 120 140 X 28-35 fi, its appendage 35 X 12 Receptacle 85-100 X 30-35 

 Primary appendage about 35 p, with branchlets about 120 p. Total length to tip of peritheeiuin 225-200 //. 



On tip of abdomen of Brachyderus antennatus Sharp, in Dr. Sharp's Coll., Ega, Amazon, No. 1155. 



This species is similar in general to S. atropwpureus which, however, lacks the perithecial append- 

 age. It varies considerably in size, but the characters appear otherwise constant. 



SPBALEROMYCES ClllKiQUENSIS Thaxtcr. Plate LII, figs. 1-2. 

 Proc. Am. Acad. Arts and Sci., XXXVII, p. 40. June, 1901. 



Almost uniformly translucent dirty amber-brown. Perithecium very large and crowded with spores, 

 long, with a very slight general inflation, the base narrower, tapering abruptly at the short tip: one of the 

 lip-cells forming an erect, median, straight, hyaline, cylindrical or slightly inflated, nearly truncate termi- 

 nal projection, which is subtended by a posterior or partly lateral, somewhat larger, spine-like, slightly 

 divergent, deep black brown, nearly straight or slightly outcurved pointed outgrowth, its tip nearly on a 

 level with that of the median projection: the basal cells collectively slightly larger than the short stalk-cell, 

 and not distinguished from the base of the perithecium. Basal cell of the receptacle very large, tapering 

 throughout from the broad distal to the narrow basal end, paler than the small, flattened, deeper brown 

 subbasal cell. The appendage consisting of a relatively large basal stalk-cell, which is slightly longer 

 than broad, and partly united to the stalk-cell of the perithecium; above are four short successively smaller 

 cells, their septa slightly oblique, the three lower bearing branches as usual, which may branch once above 

 their basal cells, the branchlets brown, erect, rigid, closely aggregated; the uppermost cell paler, with a 

 terminal branch. Spores 50 X 2 p. Perithecia 220-250 X 40-48 p, to tip of median projection, the 

 subtcrminal process 25 X 7 p; the stalk-cell 35 X 25 p. Receptacle 240 X 40 p., the basal cell 220 p. 

 Total length to tip of perithecium 500-600 ft. Appendage without branches, including stalk-cell, 75 p. 



On the tip of the abdomen of Quedius flavicaudus Sharp, Volcan de Chiriqui, Panama. Sharp 

 Collection, No. 1157. 



This large and fine species is allied to S. Brachydcri, but is abundantly distinct as a comparison of 

 the figures will show, and in the type material shows no variation except in size. 



Sphaleromyces Quedionuchi Thaxter. Plate LII, figs. 8-9. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVII, p. 39. June, 1901. 



Perithecium relatively small, translucent, tinged with amber-brown, straight, very slightly almost 

 symmetrically inflated; the tip hardly distinguished; one of the lip-cells forming a blunt, terminal, irreg- 

 ularly curved, hyaline, sometimes abruptly distinguished projection, below the base of which arises on 

 the inner side a tongue-like outgrowth externally and basally blackish brown, the broad rounded hyaline 

 end of which is curved against or across the base of the terminal outgrowth; the stalk-cell small, the basal 

 cells collectively larger, and separated from it by a very oblique septum. Basal cell of the receptacle 

 long, black, obconical, the narrow base translucent; the subbasal cell small, nearly triangular. Append- 

 age consisting of five very obliquely superposed cells, the two lower nearly equal, the cells above successively 

 smaller, but equal in length; the branches which are once or twice branched and extend about to the 

 middle of the perithecium, arising from the whole surface of their inner margins, the terminal cell soon 

 destroyed. Spores 55 X 3 p. Perithecia 135 X 36 p. Basal cell of receptacle 120 p. Appendage 

 without branches 55 p. Total length to tip of perithecium 290-310 p. 



On the abdomen of Quedionuchus irnpundus Sharp. San Andres, Vera Cruz. Sharp Collection, 

 No. 1105. 



A species distinguished by its small blunt perithecium, and almost wholly opaque basal cell, but 

 nearly allied to the three preceding species. 



