266 Alexander W. Evans, 



spicuous (often three or four in a cross-section of thallus), scat- 

 tered but more abundant toward the margin, sometimes present 

 in the walls between air-chambers ; ventral scales in two distinct 

 rows, the laminar scales alternating with the median and only 

 a little nearer the margin (a large portion of the ventral surface 

 being free from scales) ; appendages of median scales ovate to 

 orbicular, mostly 0.5-0.65 mm. long and 0.45-0.55 mm. wide, 

 narrowed toward the rounded, obtuse, or apiculate apex, margin 

 sinuate, sparingly and irregularly crenulate or denticulate from 

 projecting cells, cells showing a gradual decrease in size toward 

 the margin, median cells usually distinctly longer than broad, 

 mostly 60-120JU, long and 28-40/i, wide, marginal cells mostly 

 30-50/X long and 18-25/x wide, irregular, the long axis usually 

 forming an angle with the margin, rarely parallel with it, cells 

 containing oil-bodies lacking: male receptacle borne on a stalk 

 1,5-2 cm. high, with two to four rhizoid-furrows and a single 

 narrow dorsal band of air-chambers, the disc mostly 1-1.5 cm. 

 broad, deeply six- (or seven-) lobed, the lobes or rays palmately 

 disposed (the basal sinus being almost a straight line), mostly 2-5 

 mm. long and 1.5 mm. wide, rounded and with a thin wavy 

 margin, ventral scales imbricated, mostly in two rows: female 

 receptacle borne on a stalk 6-8 cm. long, with four rhizoid-fur- 

 rows (except close to the base) and a single broad dorsal band 

 of air-chambers, the disc mostly 0.6-0.8 cm. broad, usually 

 eleven-lobed, sometimes seven- to nine-lobed, the lobes or rays 

 short, I mm. long or less, flat, scarcely or not at all dilated at 

 the truncate apex, basal sinus considerably broader than the 

 others, upper surface of disc plane or with low ridges corre- 

 sponding with the lobes ; involucre ciliate, not lobed ; spores yel- 

 lowish brown, about 34/A in diameter, with a hyaline margin 

 about 4iti wide, outer face bearing a few low lamellae, sometimes 

 forming a very indistinct reticulum ; elaters about 8/x wide, 

 bispiral : cupules shortly and irregularly ciliate-dentate, the 

 teeth sometimes adjoining and sometimes separated by sinuses 

 of varying width, mostly two or three cells long and one or two 

 cells wide at the base, epidermal papillae lacking. (Fig. 9.) 



The following specimens of this species, which seems to be 

 very local, have been examined : 



Jamaica : without definite localities or dates. Wilds (N. Y., 

 four specimens) ; Hardware Gap and vicinity, April, 1903, 

 W._ R. Maxon 1115 (U, S., Y.) ; July, 1903, A. W. Evans 175, 

 203 (Y.) ; Chestervale, July, 1903, A. IV. Evans 211 (Y.) ; 

 vicinity of Cinchona, March, 1905, C. E. Cummings 28 (N, Y., 

 Y.) ; St. Catherine's Peak and vicinity, August, 1906, A. W. 

 Evans 441 (Y.). The specimens collected by Wilds include both 



