Eumycetes. 485 



R. fuvcata, on Eiisercoyi sp., Trinidad, INIanaos, Grenada. 

 This species is allied to the following new species: R. arachnoidea, 

 on Discopowa sp., Trinidad, on Trachyuropoaa sp., Trinidad and 

 Amazon, on Eusercon sp., Trinidad. Both depart greatly from 

 the normal type. R. anouuila, on a rainute mite, Trinidad, no 

 antheridium knovvn. R. Discopomae, on Discoponia sp., Perade- 

 nyia, Cej'lon, the antheridia are not cerlainly recognized, but 

 appear to be of the type seen in "Distic//ouiyces'\ The appendages 

 appear to branch occasionally, becoming furcate, a condition possi- 

 bly resulting from the proliferation of old antheridia. R. elegans, 

 on Discoponia sp., Peradenyia, very closely allied to R. Berle- 

 siana Paoli, differing chiefly in its much more numerous cells, 

 which are smaller and differently arranged and the total suffusion 

 of the receptacle. In fully mature specimens, the perithecium is 

 concolorous with the receptacle, and not distinguishable from it. 

 R. cvistata, on a mite parasitic on Frioscelis sp. (?), Kamerun, 

 closely allied to R. Coleopterophagi Paoli and R. mimita Paoli, dif- 

 fering in the form of its appendages and the arrangement of its 

 cell-series. R. pulchva, on Macroclieles sp. and Celaenopsis sp., Ka- 

 merun. R. obcof'data, on a minute mite, Kamerun, a very minute 

 form characteristic from its obcordate almost S3^mmetrical form and 

 radiating antheridia and appendages. R. eUiptica, on Discoponia sp., 

 Trinidad. R. incU)iata, on a minute mite, Trinidad, a charac- 

 teristic and minute species, distinguished by its tilted perithecium, 

 which is externallj^ free. It is closely allied to R. Celaoiopsis, from 

 wich it differs in the number and arrangement of its cells. R. Celae- 

 nopsis, on Celaenopsis sp., Trinidad, closely allied to R. inclinata, 

 but differing in many details of structure, the triangulär form of 

 the two basal cells of the lateral series giving it a characteristic 

 appearance. R. discvefa, on a gamasid mite, Trinidad, this species 

 is well distinguished by its large discrete yellowish appendages, 

 somewhat elongate form, and large Single antheridium. R. spathu- 

 lata, on Celaenopsis sp , Amazon, a very well marked species 

 peculiar for its more or less regularly spathulate outline, which is 

 broken only by the projecting tip of the perithecium and the pri- 

 mary appendage. R. excavata, on Celaenopsis sp., Trinidad, clearU^ 

 distinguished from other known species by its general (roughh^ 

 triangulär, distalh^ concave) form and excavated superior margin. 

 R. Euserconalis , on Eiisercon spp., Trinidad and Kamerun, this 

 species ist most nearly related to R. Megisthani from which it differs 

 in its more complicated receptacle, larger size and more or less 

 evenl}'- spathulate outline. R: Megisthani, on MegistJiauus sp., Tri- 

 nidad, with var. Trachyuropodae, on Ti'adiyuropoda sp., Itacoa- 

 tiara, Amazon and Trinidad. A*. Kznierunn, on Eusercon sp., 

 Kamerun, related to R. füifera, on a very large mite, Kamerun. 



Trenomyces Lipeiiri, on Lipeurns sp., Los Amates, Guate- 

 mala, on L. celer, California. The species is clearly distinguished 

 by the horizontal arrangement of its perithecigerous cells and by 

 its simple rhizoid. T. Laemobothrii, on Laemobofhritim atnim, Coot, 

 New England. This species is most easily distinguished by its 

 unusually large appendage, which resembles a stout spore of Piic- 

 cinia. It seems most nearly related to T. Lipeuri, the perithecia 

 being very similar. The mode of growth is however, quite different. 

 T. cifcina)is, on Lipeurns sp., Kingston, R. 1.. on L. baculus, 

 Elbing, Prussia; on Docophirus Califovnicns, California, and 

 on D. Mon-eysyi. Th2 Cilifornian forms on Docophonis are not quite 



