20 THAXTER. 



RicKiA Berlesiana (Bacc.) Paoli. 



This species is not uncommon on large Passali in Java, Ceylon and 

 Australia, as well as on various genera of mites which infest them. 

 Among the latter it has been found on Canestrinia sp., Urojjoda sp., 

 Cclacnopsis sp., and Macrochdus sp. which were collected for me in 

 Java by Dr. W. B. Thompson. On Passali it grows, as a rule, much 

 more luxuriantly, sometimes reaching a length of 800 ^i. It is a grace- 

 ful and very striking species, and is easily distinguished by the dark 

 brown contrasting color of its perithecium and axial row of cells. 

 Unlike most other species having a similar long and slender hal)it, 

 it does not appear to produce secondary branches of the axis, even 

 when the primary perithecium has been destroyed, although nearly 

 sessile secondary perithecia are occasionally met with. 



RiCKiA DiscoPOMAE Thaxter. 



Since this species was descril)ed on the mite Diseoporna, it has been 

 found in far better condition growing on the passaline beetle on which 

 the latter is a parasite. It may attain a length of a millimeter, and 

 often branches several times irregularly, as many as six perithecia 

 being sometimes developed at the tips of a corresponding ninnber of 

 axes. No individuals have been noticed on Javan material. 



Tettigomyces nov. gen. 



Receptacle consisting of an indeterminate series of cells superposed 

 in a single row, or the distal ones longitudinally divided; foot large, 

 black, without penetrating rhizoids. Appendage clearly distin- 

 guished, or a mere continuation of the receptacle: in the type consist- 

 ing of a short series of cells each of which gives rise on its inner side to 

 two opposed series of usually paired antheridial cells, the two series 

 of paired cells arching over a central cavity into which the sperm-cells 

 are discharged, and which opens by a subterminal pore; the cushion- 

 like compound antheridium thus formed compact and clearly defined 

 in the type, while in other species the antheridial cells may be indis- 

 tinguishable, or more or less irregularly associated in rows with the 

 bases of sterile branches which may arise from the appendage. Peri- 



