480 MEDICAL MYCOLOGY 



Epidennophyton pedis (Ota) Dodge, n. comb. 



TricJiophyton pedis Ota, Bull. Soc. Path. Exot. 15: 594-596, Fig. 4, 1922. 



Trichophyton sp. Kaufmann-Wolf, Derm. Zeitsclir. 21: 385-396, Pis. 8, 9, 

 1914. 



Trichophyton niveum Hodges (1921) pro parte. 



^.Trichophyton purpureum var. I Takahaslii, Jap. Jour. Derm. Urol. 25: 

 [73.] 1925. 



Isolated from lesions on the foot in man, inoculable into guinea pig, pro- 

 ducing ectothrix type of lesion. 



Aleurospores 3-4. 5/^, pyriform on simple hyphae, occasionally on compound 

 thyrses ; arthrospores ovoid, or spherical, 3-8/x in diameter. 



Colony small, center elevated, yellowish cream color; reverse violaceous 

 or brownish; growth rapid, pleomorphism in 2-3 weeks. 



The species seems intermediate in most of its characters between E. 

 niveum and E. gypseum, perhaps the "arthrospores" should be considered 

 chlamydospores. No cytologic details given. 



Epidermophyton gypseum MacCarthy, Ann. Derm. Syphiligr. VI, 6: 37- 

 41, PI. 3, 1925. 



^Trichophyton interdigitale var. 4, Ota, Arch. Derm. Syphilol. 5: 708, 709, 

 1922. 



f Trichophyton interdigitale var. II Takahashi, Jap. Jour. Derm. Urol. 25: 

 [74], 1925. 



Isolated from two cases of pseudodysidrosis with extended lesions on the 

 palms of the hands and the soles of the feet and invading the interdigital 

 spaces; chronic and resisted all treatment; another case of Carrion (1930) 

 either this species or closely related, from Porto Rico. Inoculable in rabbits 

 and guinea pigs. In 6 days, point is red, infiltrated and scaly; fourteenth day 

 thick yellowish crust, surrounding several hairs, falls leaving an erythematous 

 infiltrated surface. Lesions completely healed in 21 days. 



Aleurospores 3-4/^, pyriform and attached by very thin sterigmata to fila- 

 ments of medium length ; compound thyrses numerous ; chlamydospores termi- 

 ual or intercalary, other types of reproductive organs absent. 



Colony at first white disc, slightly powdery, slightly depressed in the 

 center and cut by flexuous radial folds ; second week clear cafe-au-lait color, 

 fourth week 10 cm., flat disc, color slightly deeper than earlier, powdery. 

 Pleomorphism after 35 days on Sabouraud conservation agar, colony nearly 

 circular, depressed in the center, cut by slight irregular furrows, white and 

 velvety, never more than 5 cm. in diameter. On potato at 3 Aveeks, colony an 

 irregular mass scarcely raised, velvety, 2 cm. in diameter. 



The colony resembles Ectotrichophyton lacticolor but is less powdery, less 

 like curdled milk in appearance. 



Epidennophyton interdigitale (Priestley) MacCarthy, Ann. Derm. Syphi- 

 ligr. VI, 6: 24, 1925. 



Epidermophyton inguinale Sabouraud pro parte. Arch. Derm. Syphilis 

 113: 923-934, Pis. 36-40, 1912. 



