ASPERGILLACEAE 629 



to this organism should be regarded witli suspicion, as it is widespread and 

 common. Thom characterizes the species group as follows: 



"Colonies rapidly growing, with abundant submerged mycelium, hyaline, 

 aerial hyphae usually scanty; conidiophores rising directly from the sub- 

 stratum, hyaline or yellow to brown near the vesicle, smooth, wall thick, with- 

 out pits, but frequently uneven on the inner surface, splitting lengthwise into 

 strips when broken, not septate or with occasional thin septa, varying greatly 

 in length on different media ; conidial heads deep brown to black, spherical, 

 radiate ; vesicles spherical or subspheric, thick-walled, commonly 20-50/x in 

 diameter, hyaline or yellow brown ; phialides usually in two series, the primary 

 covering the vesicle, 20-30/* in length ; secondary phialides 6-10 x 2-3/i, brown 

 to black ; conidia spherical, thin-walled, smooth with diffuse brown or fuscous 

 color then rough or spinulose from coloring matter deposited as tubercles 

 or bars between the outer and inner walls, 2.5-4/i, in diameter." 



Aspergillus giganteus (Mattlet) Dodge, n. comb. 



Stcrigmatocystis gigantens Mattlet, Ann. Soc. Beige Med. Trop. 6: 31, 32, 

 1926. 



Sterigmaiocystis cas V ]\Iattlet, Ann. Soc. Beige Med. Trop. 4: 167-176, 

 3 figs., 1924. 



Along with this species a Parasaccharomyces irritans was isolated from a 

 case of severe bronchomycosis in the Belgian Congo. Animal inoculations 

 not reported. 



Colony yellow saffron at first, then becoming black from the conidia. My- 

 celium variable, 1.5-6/a in diameter, with dark granules ; conidiophore hyaline 

 12-13/x in diameter, 800-1,000/1 long; vesicle 50/i in diameter, about 50 phialides 

 per great circle, covering the whole vesicle ; primary phialides about 30/i long, 

 rarely 2-celled, bearing 3-4 secondary phialides about lOfx long, heavily pig- 

 mented; conidia in chains, 3/a in diameter, echinulate, black, thick-walled, 

 finally 4-5/* in diameter. Optimum temperature 37° C, growth slow at 21°- 

 23° C. 



There is little to distinguish this species from the preceding. 



Aspergillus Macfiei Dodge, n. sp. 



Sterigmaiocystis sp. Maefie, Ann. Trop. Med. Parasitol. 15: 279-281, 1921. 



Isolated from a case of otomycosis in the ear of a European. Caused 

 irritation but no serious damage or deafness. Nonpathogenic in scarified ear 

 of pouched rat (Cricetomys gambianus) , sheep, or monkej^ (Cercopithecus 

 patas). No effect on intraperitoneal injection in rat. 



Hyphae hyaline, conidiophores about 1 mm. long, 14/t in diameter, white, 

 then darkening. Vesicle slightly broader than long, 40 x 37/i-, almost com- 

 pletely covered by phialides. Primary phialides 12/x, long (average of ten), 

 secondary phialides 8/t long (average of ten). Conidia dark brown, spherical, 

 4-5.2/A in diameter, average 4.5/i. 



On Sabouraud maltose agar, growth is rapid and spreading, yellowish 

 white and feltlike, then fluffy as conidiophores are produced. These are brown 

 to black. On glucose agar at 28° C, there is a white, puckered, and wrinkled 



