220 PROCEEDINGS OF THE .AMERICAN ACADEMY. 



wall-cells more markedly spiral and with the appendage somewhat 

 reduced. Although perhaps worthy of varietal rank, it has not 

 seemed desirable to separate this form specifically. 



Dichomyces furciferus Th. was found several times at Palermo and 

 at Temperley on Philonihus hepaticus Er., No. 1960. 



Dichomyces vulgatus was met with rarely on a large Philonthus at 

 Llavallol, No. 1490 and 1936, and occurred on a Philonthus collected 

 by Propile Spegazzini in Tucuman. 



Dichomyces princeps Th. was found rarely at Palermo on a species 

 of Philonthus, No. 1958. 



Dichomyces Homalotae Th. Typical material of this species was 

 found several times at Palermo, No. 1964, and at Temperley, No. 

 2008, on Atheta sordida Marsh. 



Dichomyces sp., a species apparently unlike the North American form 

 on Xantholinus, was found on a small species of this, or a closely 

 allied genus at Llavallol, No. 1497, at Temperley, No. 2003 and at 

 Tucuman, No. 1931 (P. Spegazzini), but the material is too scanty to 

 make a positive determination possible. 



Dimeromyces Labiae Th., was found in abundance on Labia minor, 

 No. 1974, in the park at Palermo, the specimens corresponding exactly 

 to those obtained at Cambridge. 



Ecteinomyces rhyncophorus Th., on a small hydrophilid at Palermo. 



Eiwionoicomyces Papuanns Th. A form which does not appear to 

 differ essentially from the Papuan material of this species was found 

 occasionally on the legs of a species of Oxytelus (?) at Temperley. This 

 appears to be the form described as E. Argentinensis Speg. 



Herpomyces Paranensis Th. was found in abundance on the an- 

 tennae of a large roach {Blabera f) inhabiting the roof of the Museo 

 Nacional at Buenos Aires. 



Kleidiomyces furcillatus Th. This peculiar species, formerly known 

 only from a single complete specimen, was found in perfect condition 

 and not uncommonly on species of Aleochara at Temperley, Llavallol, 

 and the Isla de Santiago. An examination of abundant material 

 shows conclusively that its separation from Monoicorayces is inevit- 

 able owing to the quite different character of its antheridium which is 

 furnished with a lateral pore. 



Laboulbetiia Aspidoglossae Th. on Aspidoglossa sp. (?) was common 

 in the park at Palermo and resembled the North American material 

 in all respects. 



Laboulbenia bicolor Th. This small species was found abundantly 

 on the elytra and legs of a black Galerita, No. 2021, collected at La 



