74 MISSOURI BOTANICAL GARDEN. 
the other species of Ceratostomella studied. The peri- 
thecia are globose, varying from 904 to 200m in diameter, 
and averaging 1204. The lengthened beak measures from 
.9 to 2 mm. in length, and 104 to 30m in diameter, aver- 
aging 1.5 mm. by 254. Some of the necks, in addition to 
the ring of bristles ordinarily found at the terminus of the 
beaked ostiolum, have one or two whorls at some distance 
below the end (pl. 8, f.7). This character has never 
been noted in cultures of C. pilifera. The terminal 
bristles are tapering and average 20 in length by 2y in 
width. The asci have not been measured. The ascospores 
are reniform in shape, hyaline, and measure 4p to 5y in 
length, and 1.54 to 1.7 in width, averaging 4.54 by 1.54 
(pl. &, £..2). 
This species penetrates pine wood when inoculations are 
made, nearly as readily as C’. pilifera. The mycelium in 
the wood cells follows the medullary rays in pine wood, 
but in red gum wood it penetrates also numerous tracheary 
vessels, and sometimes the wood fibres. It is most abun- 
dant, however, in the medullary rays of the latter wood. 
Ceratostomella minor, n. sp. 
During the year 1905 some specimens of pine wood 
stained with a dark blue color, from Pinus Arizonica Eng., 
were received from Dr. A. D. Hopkins. From these there 
were isolated two species of wood-staining fungi; one 
a species of Ceratostomella, the other a Graphium. The 
Ceratostomella proved to be smaller than the species from 
Pinus Virginiana, and differed in other points. The fun- 
gus gained entrance through the galleries of wood beetles, 
the stain radiating from cavities made by these insects. 
When grown in pure culture the fungus possessed conidia 
and ascospores. As the specific characters do not agree 
with any previous description of Ceratostomella, the name 
