272 THAXTER. 



Dimeromyces Tomari nov. sp. 



Male individual nearly colorless: the basal cell about as broad as 

 long; the subbasal much smaller, squarish, bearing terminally a 

 relatively stout three to four celled appendage-like termination, and 

 laterally a single rather stout and short antheridium, its stalk-cell 

 clearly developed, the antheridial cells apparently two, the termina- 

 tion short stout and blunt, the efferent neck hardly if at all developed. 

 Foot somewhat larger than the basal and subbasal cells combined, 

 which measure about 8.4 X 4.2 /x. The appendage-portion 20 X 4 ju. 

 The antheridium, including stalk, about 12 X 5 fx. 



Female individual faintly tinged with yellowish, becoming faintly 

 brownish with age. Receptacle consisting of a large basal and smaller 

 subbasal cell, the former tinged with brown below and overlapping 

 the latter distally; the subbasal cell giving rise to a simple somewhat 

 irregular secondary appendage more closely septate below, and on 

 the opposite side to the third cell of the receptacle from which the 

 normally single perithecium arises: the rest of the axis not distin- 

 guished from "the primar\' appendage by which it is continued. Peri- 

 thecium relatively large, the stalk well developed, often broader than 

 the ascigerous portion from which it is not otherwise distinguished, the 

 tip slightly asymmetrical, tapering to the rather broad blunt apex; 

 the ascigerous portion nearly straight on the inner and more convex 

 on the outer margin. Perithecia 80-100 X 12 ^t; largest 140 ^t. 

 Appendages 50-90 ,u. Basal and subbasal cells 10.5 X 12.5 /x. 

 Total length to tip of perithecia 90-150 ,u. 



On the elytra of Tomarus bellus Gron\-. No. 2776, Grand Etang, 

 Grenada, B.' W. I. 



Except for the presence of a secondary appendage, and the different 

 form of its perithecium, this species closely resembles that of Endi- 

 meromi/ces Chiliolis, and it is possible that the difference in the male 

 on which the latter genus was based may be less fundamental than 

 was at first supposed. In the present species the male has been clearly 

 seen in several instances to possess a compound antheridium borne 

 on a short stalk-cell from the subbasal cell. A reexamination of the 

 material of Eudimeromi/ccs, however, seems clearly to show that no 

 lateral compound antheridium is produced by the male; but the 

 terminal cell of the four-celled individual seems to become an anther- 

 idium as in Dioicomyces and Amorphomyces. Examination with the 

 highest powers available indicate, however, that the basal part of 



