THAXTER. — ARGENTINE LABOULBENIALES. 223 



found oji ()j)liioglossa sp., but the material is not sufficient for 

 description. 



Monoiconn/ccs nic/rcsceus Th. A form corresponding in all respects 

 to the North American material of this species was found abundantly 

 in the Buenos Aires region on the tip of the abdomen of Mcioncva 

 Sliarpi L. Arrib., No. 1503, Palermo, Temperley and Llavallol. 



Rhyncophoromyces rostratns var. similar to that which is figureti in 

 my first Monograph, Plate XXIV, fig. 2G, was found several times at 

 Palermo on the margins of the elytra of a pale Hydrophilid. This 

 form will probably have to be separated from the type, e\entually. 



Siigmaiomyccs virescens Th., which is probably cosmopolitan, 

 having been received from Borneo, as well as Brazil and the West 

 Indies, was obtained on a dull coccinellid collected by P. Spegazzini 

 at La Plata. 



Zodiomyccs rorticellarius Th. The monstrous Argentine form 

 previously recorded from Rosario, Argentina, was again met with at 

 Palermo, on a large Hydrophilus, and the normal type was also found 

 on smaller hydrophilids. A form perhaps specifically distinct was 

 also found on a small hydrophylid, but sufficient material was not 

 obtained. 



Note. Since the present paper was in type I have received from Professor 

 Spegazzini his "Contiibucion al Estudio de las Laboulbeniomycetas Argen- 

 tinas," Buenos Aires, June, 1912, and have made such alterations in my own 

 account as seemed absolutely necessaiy; reserving further comment on the 

 paper for some more convenient time. 



