ECTOTRICHOPHYTON MEGNINI 



IC07 



Type Species. — Ectotrichophyton {Eclotrichophyton) megnini R, 

 Blanchard, 1895. 



Classification. — The following species are known: — 



E. megnini (R. Blanchard, 1895). 

 E. equinum (Gedoelst, 1902). 

 E. vinosum (Sabouraud, 1909). 

 E. nodoformans (CdiSteWdim, igi2). 



They may be distinguished as follows : — 



A. Mycelial spores very large, 8-9 microns in diameter: — • 



I. Old cultures pinkish — Megnini. 

 II. Old cultures deep wine red— Vinosum. 



B. Mycelial spores not large, 2-4 microns in breadth; — 



I. Surface growth abundant, dark red — Equinum. 

 II. Surface growth scanty and colourless, submerged portion brick 

 red — Nodoformans . 



Ectotrichophyton megnini R. Blanchard, 1895. 



Synonyms, — jyichophyton roseum Bodin, 1902; T. rosaccum 

 Sabouraud, 1902; T. megnini R. Blanchard, 1895. 



Endo-ectothrix, megalosporon, downy-culture type. Mycelial 

 spores found in the hairs are very large, 8 to 9 /j, in diameter. On 

 maltose agar the growth is at first white, with a velvety appear- 

 ance; later, pinkish, or of a deep rose colour. Duvet becomes very 

 abundant in old cultures. It is parasitic in fowls and pigeons; 

 may infect man, causing a variety of tinea barbae without suppura- 

 tion. 



Ectotrichophyton vinosum Sabouraud, 1909. 



Synonym. — Trichophyton vinosum Sabouraud, 1909. 



Endo-ectothrix, megalosporon, of downy-culture type. Is very 

 similar to E. megnini, but the colour of old cultures is of a deep 

 wine-red colour. Abundant duvet. Found by Sabouraud in a 

 case of tinea circinata. 



Ectotrichophyton equinum Gedoelst, 1902. 



Synonym. — Trichophyton equinum Gedoelst, 1902. 



Endo-ectothrix, megalosporon, downy-culture type. Mycelial 

 spores of oval shape, 4 to 6 in length, 2 to 4 in breadth. On 

 maltose agar the growth is orbicular, with abundant duvet; later 

 on, the portion of the growth which is in contact with the medium 

 becomes yellowish and afterwards dark red. It is parasitic in 

 the horse, and may infect man. 



Ectotrichophyton nodoformans Castellani, 1912. 



Synonym. — Trichophyton nodoformans Castellani, 1912. 



Found in Ceylon in cases of dhobi itch and tinea barbae; not 

 very abundant in the lesions. On Sabouraud's agar the growth is 

 white, with a powdery surface and a central small knob. The 

 growth deepens in the medium, and the submerged portion has a 



