MONOGRAPH OF THE LABOULBENIACEiE. 



379 



Ceratomyces furcatus Thaxter. Plate XXV, figs. 1-4. 



Proc. Am. Acad. Arts and Sci. Vol. XXVIII, p. 186. 



Hyaline, becoming more or less suffused with reddish brown, the appendages sometimes 

 purplish. Receptacle composed of three or four superposed cells, surmounted by two cells, from 

 which arise the perithecium and appendage. Pcrithecium large and stout, externally nearly 

 straight, inwardly inflated and strongly curved to the pointed apex, below which arises externally 

 and sub-laterally a large, stout, flexed appendage, tapering and bearing toward its tip a single 

 row of short branches, which may be in turn once branched. Cell-rows of perithecium each 

 consisting of about eight cells. Antheridial appendage very large, consisting of twenty cells 

 (more or less) bearing branches at irregular intervals from its inner surface. Spores, 85-90 x 

 4 ix. Perithecia, 130-150x 45-60^. Receptacle, 90-110 x 45-55 fx. Antheridial appendage, 

 300-425 /x. Perithecial appendage about 325 fx. 



On Berosus striatus Say, Maine. 



This singular-looking species occurs, so far as I have observed, only on the right side of the 

 lower surface of the thorax in small groups. Its very large antheridial appendages distinguish 

 it from other species, and give it the Y or V form which has suggested the specific name. The 

 spores, like those of C. contortus, are peculiar in that the septum involves also the gelatinous 

 envelope. It seems to be a decidedly rare form, and with C. humilis and the last mentioned 

 species, all occurring on the same host, has been thus far found only at Kittery Point, Maine, in 

 a small pond near the highest point of Cutts Island. 



Ceratomyces contortus Thaxter. Plate XXV, figs. 5-10. 



Proc. Am. Acad. Arts and Sci. Vol. XXVIII, p. 186. 



Hyaline, becoming very faintly brownish. Receptacle consisting of three superposed cells, 

 above which three cells form the general base of the perithecium and appendage. Perithecium 

 long and slender, usually constricted at the base so as to appear short stalked, slightly inflated 

 and bent outward, the apex pointed and curved. A short appendage arises sub-laterally below 

 the apex and is strongly curved, extending inward beyond the apex, its fifth and sometimes also 

 its sixth cell producing from its upper surface a stout branch which may be simple or may bear 

 secondary branches at irregular intervals. Antheridial appendage consisting of about twelve 

 superposed cells, producing a few branches from its inner side at irregular intervals, the branches 

 in turn more or less irregularly branched. Spores, 80-85 x 3-3.5 fx. Perithecia, 200-260 x 35- 

 45 ix. Receptacle about 125 fx long. Antheridial appendage, 110-130 /x. Perithecial append- 

 age, 75 fx long. 



On Berosus striatus Say, Kittery Point, Maine. 



This species is somewhat more frequently met with than the preceding, and is usually found 

 on the lower surface of the abdomen on the left side near its tip. It is readily distinguished 

 from C. furcatus by its more slender habit, almost stalked perithecium, much smaller appendages 

 and generally malformed and distorted habit. It has as yet been found only in the locality men- 



