CHITONOMYCES AND RICKIA. 23 



rior cell-series, which may extend ol)liquely downward nearly to the 

 foot. Receptacle biseriate; the anterior series consisting of usually 

 four subequal cells, and extending to or above the middle of the 

 perithecium, all but the uppermost usually cutting off an appendicu- 

 late cell: posterior series consisting of seven or eight cells, mostly 

 broader than long, their longer axes more or less radially arranged, 

 cutting off distally and externally appendiculate cells which are some- 

 what prominent; the two celled base of the primary appendage 

 diverging from the fifth or sixth cell, the subterminal cell not associated 

 with an appendiculate cell; the terminal cell bearing an appendage 

 directly, the blackened base of which lies close beside the apex of the 

 perithecium. Perithecium straight, erect, half or less free along the 

 anterior margin, tapering distally, the tip hardly distinguished, the 

 apex ending in a blunt free prolongation of one of the inner lip-cells. 

 Appendages short and stout, often considerably inflated, the free dark 

 base often cup-shaped. Spores about IS X 2 fx. Perithecia 20-28 X 

 7-9 M- Total lengths to tip of perithecium 35-40 X 19-23 /x. Larger 

 appendages 7 X 3.5 /j.. 



On Celaenopsis sp., collected in Hayti by W. H. Mann, M. C. Z., 

 No. 2795 (type), Diquini; No. 2792, Petion; No. 2793, Cape Haytien. 



A minute species allied to R. Euzerconalis, but at once distinguished 

 by the absence of any median cell-series. No antheridia were recog- 

 nized in the dozen or more individuals examined. 



Rickia Dominicensis nov. sp. 



Receptacle triseriate, the anterior series reduced to two cells; the 

 posterior and the median, which originates near the middle of the 

 perithecium, forming together a slender free flagellum: hyaline, except 

 the basal cell; which is hyaline below, its distal portion prolonged 

 upward on the posterior side and deep black, except at its tip, the 

 opaque area extending obliquely up beside the two lower cells of the 

 posterior series, forming a contrasting margin, its hyaline apex ending 

 at or near the blackened base of the first posterior appendage: an- 

 terior series consisting of two cells; the lower subtriangular, its inner 

 margin convex, cutting off distally and externally an appendiculate 

 cell; the upper lying in somewhat oblique contact with the base of 

 the perithecium, its attenuated distal portion curved up beside the 

 lower fourth of the anterior margin of the latter: the four lower cells 

 of the posterior series long, subequal; the fourth reaching nearly to 



