XEAV DIMORPHOMYCETEAE. . 217 



On the legs of Copiosoma maculafum Westw. No. 2800 (Type), 

 Madagascar (M. C. Z., Wulsin). No. 2960 on Copiosoma sp. 

 Suene, Fiji (M. C. Z., Mann), also 2960, Wai Ai, Solomon Islands 

 (M. C. Z., Mann). 



The material from Fiji and the Solomons is somewhat smaller than 

 the type and grows for the most part on the margin of the abdomen. 

 The differentiation of the tip is even more pronounced, the appendage 

 slightly narrower and more reddish: but there are no essential differ- 

 ences. The antheridia seem to contain several dozen antheridial 

 cells, and the sperm-cells are discharged in a mass which fills the 

 chamber and neck with bacillus-like elements. 



A form has been observed on a Copiosoma from Kamerun which is 

 perhaps sufficiently distinct for varietal separation and may be dis- 

 tinguished as 



PoLYAXDROMYCES CoPTOSOMALis, var. minor nov. var.^ 



The general structure similar to that of the type, smaller and stouter, 

 the perithecium asymmetrical, externally straight or concave, the tip 

 hardly distinguished, the apex relatively broader. The male similar 

 but somewhat smaller. Perithecia 135 X 38-150 X 42 /x. Recepta- 

 cle 40 X 34 M- Appendage 20 X 12 m- Total length 160-190 m- 

 The male 100-105 /i. 



On Copiosoma sp. 3103. Kamerun, West Africa. 



Although this form is separable at a glance from any of the abundant 

 specimens of the type, owing to its smaller size and somewhat different 

 perithecium, the Aariation does not seem to be more than might 

 readily be included in a single species. The variety was found only 

 at the tip of the abdomen, and is seen with difficulty lieneath the 

 projecting segment. 



Dimorphomyces Bledii nov. sp. 



Male individual relatively large and stout, faintly tinged with 

 brownish yellow, receptacle composed of two nearl\' equal cells 

 obliquely separated. Appendage short stout two celled, the wall of 

 the upper of the two nearly equal cells distally thickened. Appendage 

 and antheridium diverging slightly, the latter sessile on a broad base, 

 the stalk-cell very small, the venter inflated, broad, the neck well 

 distinguished, bent upward. Antheridium 23 X 9.5 /jl. Appendage 

 9.5 X 5 M- Receptacle 13 X 8 fx. Total length to tip of antheri- 

 dium 42 /x. 



