162 PROCEEDINGS OF THE AMERICAN ACADEMY. 



cells, the two lower larger, the upper lying beside the base of the 

 perithecium. Perithecium 35^3X23 ^i. Spores about 40X2.5 jU. 

 Receptacle 40X27-31 m- Total length 75-85 m- 



On the elytra of a minute beetle belonging to the genus Melanoph- 

 thalma. Llavallol, No. 1980. 



This curious little form is distinguished by the apparent absence 

 of any secondary appendages, the cells which are separated to subtend 

 them in other species, developing nothing more than mere rudiments, 

 and often becoming quite obliterated by the general enlargement of the 

 receptacle, the cells of which may become somewhat displaced. On 

 the perithecial side the usually single marginal cell cuts off no subtend- 

 ing cell even when it becomes divided. Like the preceding species 

 this form is distinctly aberrant. 



Monoicomyces Caloderae nov. sp. 



Straw-colored, the perithecia and older appendages becoming tinged 

 with amber-brown. Basal cell of the receptacle stout, squarish, the 

 subbasal cell less than half as large, pale straw-colored or nearly 

 hyaline. Primary appendage concolorous with the receptacle, 

 elongate, its tip often extending above the tips of the perithecia; 

 tapering slightly to a blunt extremity, simple or usually producing 

 one or two branches from the third or fourth cells on the inner side. 

 The two primary fertile branches variously complicated by successive 

 proliferation of the secondary branches, the branchlets of which may 

 be of the second or even the fourth order, the perithecia subtending 

 the antheridia. Antheridium of the usual type, its tiers and append- 

 ages somewhat variably developed, but resembling in general those 

 of M. Homalotac. Perithecia rather short and stout usually symmetri- 

 cal, inflated below, conical above; the apex small, blunt; the basal 

 cell-region not distinguished from the ascigerous region ; the stalk-cell 

 well defined, its basal half usually slightly constricted and suffused 

 with vinous amber-brown. Spores 38X4 ju. Perithecia, including 

 basal cell-region, 80-90X30-35/1; the stalk-cell 25X 12 /i. Receptacle 

 about 25X20 ju. Primary appendage 150-175 ;u. Appendages 75- 

 100 tx. Antheridium 90 X 35 ix. 



Usually on the abdomen of Calodera sp. Nos. 1504, 1515, 1691 

 and 1991, Palermo, Temperley and Llavallol. 



Although very common this species is seldom if ever found in good 

 condition, perhaps owing to certain peculiar habits of its host. The 

 appendages are usually broken off entirely and the development of 



