THAXTER. — RICKIA AND TRENOMYCES. 383 



Trenomyces iiistophorus Chat. & Picanl. 



This species, wliich appears to vary greatly in size, has been re- 

 ceived from Dr. Miiller, from Elhing, Prussia; from Prof. Trinchieri 

 from Naples, Italy, and I have examined type material kindly .sent 

 me by Professor Chatton. In this country it has been ol)tained on 

 species of Mcnopon and Goniocotcs from Kittery Point, Maine, and 

 from Newton, Mass. (on hosts kindly sent me by Mr. Walter Deane), 

 on Mcnopon sp. from Gundlacli's mockingbird, Bahamas; on Mruo- 

 pori from hen, Jamaica, W. I., and Guatemala: in the Kellogg collec- 

 tion on M. mesolfucuDi (crow), Palo Alto, California; M. tridens, Iowa; 

 Menopon sp., No. 256b; on Goniocoies, Guatemala. 



A species has been examined from various species of Nirmus, 

 N. puncfafus (Calif.), A', mariiinius (N. E. and Cal.), A'^. olivaceus 

 (Elbing, Prussia, Dr. ^Sliiller), which seems hardly separable from the 

 many variations of T. Iiistophorus. A variety, which may possibly 

 prove a distinct species has also been found on Menopon numcrosum 

 (Kellogg, No. 24b), Menopon spp. (Kellogg, Nos. 80b, 256b, 74b), 

 Docophorus sp. (Kellogg, No. 997). In this form the basal cell and 

 the upper enlarged portion of the rhizoid are more or less conspicuously 

 suffused with smoky brown in all cases. The ascogenic cell is usually 

 near the base of the short stalk, and the distal cell of the appendage 

 is somewhat more compressed than in the type but there are otherwise 

 no distinctive characters. 



Trenomyces Lipeuri nov. sp. 



Male individiial. Rhizoid more or less abruptly enlarged immedi- 

 ately below the integument, the swollen portion variably elongated 

 and passing below into a rather stout simple, cylindrical prolongation 

 of variable length. Basal cell of the receptacle bent at right angles 

 to the rhizoid, horizontally elongated and corticated on the upper 

 surface by an irregularly double series of small cells, which give rise 

 to a corresponding series of erect or slightly divergent antheridia. 

 Stalk-cell of the antheridium very slender, broadened below the basal 

 cells; the body rather short and stout, subfusiform, the efferent tube 

 short and slender. Appendage lying horizontally; the distal cell twice 

 as long as the basal. Length from tip of appendage to last corticating 

 cell, largest specimen, 42 n. Appendage 15 X 9 /x. Total length of 

 antheridium including stalk 35 n; efferent tube 4 fj. long; rest of body 

 about 18 X 10 m. 



