TRICHOPHYTONEAE 529 



Colony irregular, not elevated, but with a slight boss, avellaneous, margin of thick 

 irregular branched rays which become powdery where they reach the sur- 

 face, suggesting islands of an archipelago. 



Favotrichophyton avellaneum (p. 525). 

 Colony white with yellow jjeak in center which becomes folded in age. 



T. soudanenfic. 

 Colony (at 37° C.) white central peak surrounded by a perielinal furrow, two con- 

 centric zones and marginal fringe usually with four slight radial folds; 

 closterospores veiy rare, chlamydospores abundant. 



Ateleothylax Currii (p. 431). 



Trichophyton flavum Bodin, Champ. Paras. Homme 119, 120, 1902. 



Trichophyton a culture jaune, craquelee, vermiculaire, Sabouraud, Ann. 

 Derm. Syphiligr. Ill, 4: 815, 1893. 



Trichophyton cerehriforme Sabouraud, Maladies du cuir ehevelu 3: 321- 

 330, 1910. 



Neotrichophyton flavum Castellani & Chalmers, Man. Trop. Med. ed. 

 3, 1002, 1919. 



Causes tinea barbae and rarely prepubertal tinea capitis or herpes of 

 glabrous skin; seven eases on conjunctiva (Deuchler 1930) in man, not yet 

 found spontaneously in animals, but inoculable into guinea pig. The early 

 report by Sabouraud of finding it on horse, was probably incorrect, being 

 furnished by a series of misunderstandings, the cultural characters sometimes 

 quoted by later authors for T. depilans Megnin. Common in England, France, 

 Italy, Germany, rare in Sao Paulo in Brazil and in Uruguay. 



Terminal and intercalary chlamydospores and lateral aleurospores pres- 

 ent; arthrospores abundant. 



Colonies folded, cerebriform with a crater when young which disappears 

 as the folds become prominent, white at first then cream color, finally yellow- 

 ish in the center, crackled, marginal rays distinct and unequal, suggesting 

 moss shoots when seen by transmitted light, powdery only where they reach 

 the surface. 



Trichophyton ochropjrrraceum Muijs apud Papegaaij, Pathogene Huid- 

 schimmels 50-56, 1924; Papegaaij, Nederl. Tijdschr. Geneesk. 69: 885, 1925. 



Trichophyton crateriforme var. ochropyrraceum Keller, Derm. Zeitschr. 

 49: 49, 1927. 



Producing tinea capitis of the Malmstenia type, changing color of hair. 

 Holland and Germany. 



In hair, arthrospores 4.5-5/x,. 



Colony a small white hemisphere with long velvet, divided by a broad 

 deep furrow, becoming light yellow, then deep sulphur yellow. In third week, 

 cerebriform, light brown, becoming red brown, 6-7 cm. in diameter in 6 weeks, 

 never pleomorphic. 



Differs from T. sulfureum in being cerebriform and red brown, never with 

 a red nodule in the center. 



Trichophjrton plicatile Sabouraud, Maladies du cuir ehevelu 3: 330-333, 

 1910. 



