TRICHOPHYTONEAE 525 



Isolated from tinea tonsurans, Sabouraudia type, on child, Loochoo Islands. 

 Jnocnlable into guinea, pig, rabbit, dog, and cat, found only in hair of guinea 

 pig, in scales of other experimental animals. 



Hyphae 3^ in diameter, branching scarce ; racquet mycelium present. In- 

 tercalary and terminal chlamydospores abundant. Arthrospores abundant in 

 old cultures. Katoh reports rudimentary sporiferous thyrses in pleomorphic 

 colonies. 



Colony grayish white becoming chestnut or dark brown, surface of small 

 glabrous nodules, humid. In 3 weeks, the colony is surrounded by a broad 

 crown of rays, forming a disc 4-5 em. in diameter. The mass of central nodules 

 is still evident, the surface either still smooth or covered by a short, whitish 

 powdery lanugo. On Sabouraud maltose and on peptone agar, colonies simi- 

 lar but pleomorphism develops with long white hyphae. On Pollacci agar, it 

 forms a rounded colony, mammillate, glabrous, humid. Surface chestnut with 

 a whitish bloom, but reverse wine red color diffusing into substrate. 



Close to F. vioJacenm, differing principally in color. 



Favotrichophyton avellaneum Dodge, n. nom. 



Trichophyton Langeroni Milochevitch, Ann. Parasitol. Hum. Comp. 9: 456- 

 461, 1 pi., 1931, not Grubyella Langeroni Baudet, Favotrichophyton Langeroni 

 (Baudet) Dodge. 



Dry lesions with scales and broken hairs, on Jewish boy in Belgrade. 

 Inoculable into guinea pig, monkey, and calf (Catanei 1932). 



In hair, arthrospores very small (endothrix microi'de of Ota & Kawatsure, 

 1931, resembling tropical Endodermophyton concentricum) . 



In faviform colonies, hyphae 2.5-5/x, tortuous at the extremity, septate, 

 branched, tips clavate, arthrospores and intercalary or terminal chlamydo- 

 spores present, favic candelabra, and lateral buds suggesting aleurospores 

 (?) of Trichophyton; (Afunctional) chlamydospores (more normal in appear- 

 ance), filled with sudanophile granules. Probably none of the media tried 

 were really favorable to best growth. 



Colonies irregular, not elevated, slight avellaneous boss, margin of thick 

 irregular, branched rays, surface smooth, dry, with marginal rays reaching 

 surface in places and suggesting islands of an archipelago around the central 

 mass very different from the delicate transparent rays forming a halo around 

 the usual dermatophyte. Initial cultures developing very slowly, subcultures 

 more rapidly. On horse dung, only slight development, none on barley, slight 

 flakes on wheat water, very slight on soluble starch and dextrin. No trace of 

 pleomorphism. 



Favotrichophyton verrucosum (Bodin) Neveu-Lemaire, Precis Parasitol. 

 Hum. 55, 1921. 



Trichophyton faviforme a culture grise [de Vane] Bodin, Les teignes ton- 

 dantes du cheval, 101-110, These Paris, 1896; C. R. Soc. Biol. 48: 711-713, 1896. 



Trichophyton verrucosum Bodin, Champ. Paras. Homme 121-124, 1902. 



