500 MEDICAL MYCOLOGY 



Ectotrichophyton multicolor (Magalhaes) Dodge, n. comb. 



Trichophyto7i multicolor Magalhaes & Neves, Mem. Inst. Oswaldo Cniz 

 20: 271-298, Pis. 45-56, 1927. 



Lesion on the left temporoparietal region of a white male of 10 years, 

 scales not hard, easily detached, covering microvesicles with or without pus; 

 lesion had been pruriginous for 8 months. Experimentally inoculated on a 

 white male (18 years). After 9 days, a small circinate plaque with micro- 

 vesicles, becoming 3.2 cm. in diameter in 18 days and 5.5 x 6.6 cm. in 32 days, 

 when it was treated and promptly cured by the application of an ointment 

 (chrysarobin 0.3 gm., salicylic acid 0.1 gm., zinc oxide 1 gm., vaseline 5 gm., 

 and lanolin 5 gm.). The lesion had disappeared by the fifty-sixth day. 



Mycelium and some aleurospores appear on the seventh day after germi- 

 nation. Thyrses and both terminal and lateral chlamydospores on the eighth 

 day, compound thyrses and varicose hyphae on the ninth day. At one month, 

 closterospores 5-8-celled, 48-70 x 5.5-9/i,, mycelium 2-4/a, rarely Q^i in diameter; 

 chlamydospores 10-20/t, aleurospores 4-5/*. 



Colony cerebriform, pulverulent, rose color with ochraceous tints, toward 

 the center, becoming vinous except in the center which remains ochraceous. 

 On Sabouraud conservation agar, intensely velvety, j^ellow ochre. On malt 

 agar, yellow ochre, slightly folded. On potato glycerol, growth is poor. 



Ectotrichophyton erioton (Cazalbou) Dodge, n. comb. 



Trichophyton erioton Cazalbou, Bull. Soc. Centr. Med. Vet. 91: 118-120, 

 1914. 



Lesions as in Megatrichophyton. 



In the scales filaments are S/x in diameter, septate, also in follicles, arthro- 

 spores 3-6/t, polyhedral to spherical. Closterospores present ; aleurospores not 

 observed. 



On maltose peptone, velvety disc, 5 cm., grayish, woolly, central area 

 slightly raised, about 12 furrows ; margin of immersed hyphae ; reverse brown 

 with a red orange ring about 3 mm. wide. On glucose, the colony is similar, 

 but furrows fewer, more definite, central dome less developed, reverse uni- 

 formly pale yellow. Odor of urine more marked than in Megatrichophyton 

 equinum. 



Ectotrichophyton Otae Dodge, n. nom. 



Sahouraudites ruber var. blanche Hashimoto, Irizawa & Ota, Jap. Jour. 

 Derm. Urol. 30: 1-9 [1, 2], 1930. 



Isolated from trichophytic lesions of the glabrous skin and nails. Japan. 

 Inoculable to guinea pig, producing lesions of the T. neoendothrix type. 



Arthrospores 3-5/i, in the hair, reaching 8/a. Closterospores, aleurospores 

 singly and in racemes, but no spirals produced in cultures. Colony a finely 

 felted disc or even powdery with furrows radiating from an elevated irregular 

 plateau covered with velvet, reaching 7-8 cm. in 3 weeks, chalk white, some- 

 times with a faint rose or lilac tone. On maltose, more pigment production 

 than on glucose, disc sometimes white, surrounded by a zone of purple or 

 greenish yellow. 



