136 MEDICAL MYCOLOGY 



Gelatin not liquefied, but fine hyphae perpendicular to the line of the stab 

 seen and a tuft of mycelium at the bottom. 



The systematic position of this species is not at all clear. Its behavior 

 on the hair suggests relationships with the European species previously placed 

 in Trichosporuni. On the other hand, this organism caused considerable irrita- 

 tion of the genitalia while the so-called Trichosporuni of Vuillemin and others 

 caused no irritation. Its morphology in culture would relate it to Mycotorula 

 as has already been pointed out by Langeron & Talice (1932), but none of 

 the other species of the group have been reported able to penetrate the hair. 



Trichosporuni equinum Fambach teste Fonseca, Rev. Med. Cirurg. Brasil 

 38: 256, 1930. 



Producing white nodules on hair of horse, becoming yellowish or darker. 



Trichosporum Foxi Castellani, 1908. 



Pichiaceae. — The systematic position of this family is not clear. It may 

 have arisen from Nematospora or Ashhya or, more probably, as another line of 

 degeneration from the Ascoideaceae. The most primitive member is Guillier- 

 mondella which produces considerable mycelium with conidia. Asci 4-spored, 

 either lateral or intercalary, follow isogamous copulation or may develop par- 

 thenogenetically. Spores sickle-shaped [Dekker (1931) figures them as kidney- 

 shaped very close to those of Pichia]. A somewhat more degenerate species, 

 GuilUermondella Vuillemini (Endomyces albicans Vuill. non Johan-Olsen, En- 

 domycopsis albicans Dekker) from a case of thrush, still retains both mycelium 

 and sprout mycelium. The spore number is 4, or fewer. 



In Zygopichia and Pichia there are cylindric cells and some mycelium for- 

 mation, forming a thick, dry pellicle on the surface of liquid media. In 

 Zygopichia heterogamous copulation precedes ascospore formation, in Pichia 

 the degeneration is complete, and the ascospores develop parthenogenetically. 

 Both genera have kidney-shaped, hemispheric, or angular ascospores. 



Guilliermondella Vuillemini (Lindau?) Dodge, n. comb. 



Endomyces albicans Vuillemin, C. R. Acad. Sci. 127: 630-633, 1898; Rev. 

 Myc. 21: 43-45, Pis. 189-190, 1899 not Johan-Olsen 1897 (excl. all syn. based 

 on Oidium albicans Robin). 



Endomycopsis albicans Dekker (excl. syn.), Verhandel. K. Akad. Wetensch. 

 Amsterdam, Afd. Natuurk. 28: 231, 1931. 



Endomyces Vuillemini Lindau?, Mikroscopische Pilze 1912 [cited as 

 Landrieu by Castellani & Chalmers, Man. Trop. Med. ed. 2, 1913, but I am 

 unable to verify this citation]. 



Isolated from a case of thrush. 



Yeast cells abundant at first, giving rise to mycelium with chlamydospores 

 and finally producing asci, spherical or ellipsoid, 4-5/*, 4-spored, rarely 2-3- 

 spored, axes of ascospores 3.8-3.5 x 1.75-2 x 1.2-lA/x, not staining with nuclear 

 stains (i.e., the deeply staining bodies called by Vuillemin the ''globules 

 internes" are probably nuclei, fide unpublished work of Morris Moore). The 

 ascospores cling together in groups for some time after the asci have dis- 

 appeared. 



