84 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Chaetomium subspirale, sp. nov. 



Griseum vel roseo-griseum. Peritheciis majoribus, longioribiis, 

 314 X 213 M (300-337 X 206-224), sporidiis irregulariter conglobatis 

 gerentibus; pilis lateralibiis numerosis, tenuibus, regulariter et dis- 

 tincte septatis, levibus, l)asi rectis, apice arete spiraliter eonvolutis; 

 pib's terminalibus tenuibus, obscure septatis, pallide-olivaceis, le\ibus, 

 primum arete dein laxe spiraliter eonvolutis; aseis clavatis, oetosporis, 

 45 X 9.7 /i, p. sporif. 24 /x; sporidiis subdistiehis, pallide olivaeeis, 

 limoniiformibus, utrinque apieulatis, 6.4 X 5.2-5.6 ju. 



Frequent in cultures of various substrata from New England. 

 Appearing in cultures of dung from Holland and South America. 



The species may be distinguished by its characteristic hairs; the 

 lateral ones of which are short, straight, dark below; tightly coiled, 

 hyaline and "refractive at the tips; the terminal slender, at first 

 tightly coiled in a delicate spiral, later elongated, twisted rather than 

 coiled and giving the appearance of wooly threads. 



Chaetomium sphaerale, sp. nov. 



Griseo-flavis, olivaceo-flavis, aetate aureo-flavis. Peritheciis maj- 

 oribus, subglobosis, basi rotundatis, apice subconstrictis, 312 X 276 ix 

 (300-329 X 262-300), sporidiis regulariter conglobatis gerentibus 

 vel cirrhis instructis; pilis lateralibus numerosis, gracilibus, levibus, 

 regulariter et distincte septatis, successive olivaeeis, aureofiavis, 

 pallide flavis, hyalinis, apice collabentibus; aliis subrectis, longiori- 

 bus, 1-2-ramosis, basi 3.7 /i diam., aliis flexuosis, brevioribus, non 

 ramosis, basi 2.8 /i diam.; pilis terminalibus longis, gracilibus, pilis 

 lateralibus concoloribus, le\"ibus, irregulariter flexuosis vel subspiral- 

 iter eonvolutis, 1-5-ramosis, basi distincte septatis, apice obscure 

 septatis vel subcontinuis; ascis clavatis, oetosporis, 48 X 13 ^t, p. 

 sporif. 26 yu; sporidiis subdistiehis, dense olivaceo-brunneis, utrincjue 

 umbonatis, limoniiformibus, 7.3-8.1 X 6.4 ;u. 



In a culture of caterpillars from Reading, Mass. 



The perithecium, globose below, with a tendency to narrow above 

 into a neck, distinguishes this species from all others which the writer 

 has studied. The slender delicate hairs and the entire absence of 

 differentiated rhizoids are also significant characteristics. 



