TRICHOPHYTONEAE 539 



Colony straw or citrou yellow to yellowish brown, center chocolate brown, moist more 



or less cerebrif orni with numerous irregular radial furrows ; with marginal 



rays. M. japonicaim. 



Glosterospores rare, slender and abortive, pleomorphism absent or very rare, growth slow, 



causing tinea capitis before puberty without inflammation, not attacking domestic 



animals, not inoculable or only with great difficulty inoculable into guinea pig. 



EUMICROSPORUM. 

 Colony reddish with eoreiiiiuiu formation; lanuginous with numerous radial ridges. 



Colony on potato, grayish white becoming intense reddish brown; Northern Italy. 



M. iris. 

 Colony on potato snow white, ''furry," England. M. iris var. Craikii. 

 Colony grayish or white, sometimes slightly brownish, never yellowish or orange. 



Colony umbonate, a flattened cone at first, finally divided by a few radial furrows; 

 on potato reddisli colony, Russia, Hungary. 



M. itmbonatwrn. 

 Colony with tiny umbo, flat, soon divided by 3-4, rarely 6, radial furrows; on potato 

 gray then reddish brown, smooth, moist, finally forming velvet; world-wide. 



M. Audovmi. 

 Colony thicker, dryer, divided into 5-6 sectors; on potato drier, thicker with 

 velvety tufts; no closterospores observed. 



var. velvetioum. 

 Colony smaller, velvet shorter; closterospores present but degenerate; some 



spiral mycelium; France, Montreal. var. tardv/m. 



Colony slightly powdery, flat disc without furrows; closterospores very rare but 

 less degenerate; chlamydospores common; aleurospores rare. 



var. depa/wperatv/m. 

 Colony similar, mycelium more slender, more submerged ; Germany. 



f. pert&nue. 



NEOMICROSPORUM 



Neomicrosporum Sabouraud, Maladies du cuir chevelu, 1910. 



Closterospores abundant in most species, chlamydospores present ; aleuro- 

 spores rare ; often on several hosts, mostly domestic animals but inoculable 

 to man, causing inflammatory lesions. 



Microsporum rubrum Cazalbou, Premier Cong. Internat. Path. Comp. 1912 ; 

 2: 306, 307, 1914. 



]\Iicrosporic lesions on horse from Cherbourg, France ; not reported since 

 original case. 



On maltose peptone, circular colonies, glabrous, 5 cm. in 15 days at 25° C, 

 wine red, center with slight puckering surrounded by a raised fold, from which 

 radiate many straight folds to the margin. Part way to the margin, another 

 circular ridge connects these radial ridges and gives rise to intermediate radial 

 ridges ; reverse wine red, with a narrow margin of yellowish color. On glucose 

 peptone, colonies groAv equally well and are similar, but circular ridges are 

 closer together and central area more folded. On malt (3% maltose), colony 

 somewhat similar, but glabrous and grayish. No pleomorphism noted. 



Microsporum equinum (Delacroix & Bodin) Gueguen, Champ. Paras. 

 Homme Anim. 144, 1904. 



