300 
THAXTER. — MONOGRAPH OF THE LABOULBENIACE^ 
in „„. n,^ figures; since it seems probable that in the specimens examined the whole mass 
k ,s >,,,„ dispZ*d from a position lower do™, nearer the base of the tomel-shaped cav,ty below. As 
detenu 
cells in u single prritluTiuni, and perhaps more in some individuals. ..,.',, ,-,-.. 
Further knowledge of this very peculiar type is much to be desired, and it is to be hoped that English 
ol)M ,. V(TS m;lv | )e able to obtain material of young individuals which will make it possible to determine 
the uature of the antheridium. The host of the unique species is a staphylmul allied to rachinus and 
appears to be rare in collections, although it is well represented in that of Dr. Sharp, in which, however, 
much to my regret, I was unable to discover any individuals that were infested. 
Polyascomvces Trichophy.e Thaxter. Plate XXXVII, figs. 1-2. 
Proc. Am. Acad. Arts and Set, Vol. XXXV, p. 415. April, 1900. 
Pale dirty brownish. Perithecium broadest in the aseigerous zone, tapering thence to the distinctly 
differentiated neck-like tip, the subterminal wall-cells enlarged distally, externally and laterally, the re- 
sultant rounded protuberances forming a ridge about the tip just above its middle, the distal port.on, 
formed by the lip-cells, of which that on the right is slightly longer than the rest, broad blunt brownish, 
the other three somewhat shorter terminating in narrow blunt extremities which lie on three sides of the 
first. The stalk-cell similar to and lying beside the subbasal cell of the receptacle to which it is united 
throughout, its base being in contact with the distal end of the basal cell, while from its distal end the 
large basal cells of the receptacle curve abruptly outward and upward. The appendage consisting of 
from three to six flat superposed darker brown cells, constricted at the septa, looking as if they had been 
made irregular by crushing, the terminal portion (antheridium?) blunt, slightly longer than broad, with 
evidences of lateral apertures. Spores 28 X 2.5 p. Perithelia 175 X r " nr n ~~~ 1 "*""" An ~ A(t ^ 
30 p. Stalk 38 /i. Receptacle 70 fi. Appendage 48-60 X 20-24 p. 
' On the superior surface of the abdomen of Trichophya pffieornu Gyll., British Museum, No. 453, 
50-05 it. Basal cells 40-48 
England 
ACALLOMYCES Thaxter. 
Proc. Am Acad. Arts and Sci., Vol. XXXVIII, p. 23. June, 1902. 
Receptacle consisting of two superposed cells, the lower sometimes obsolete or indistinguishable 
from the foot, the upper bearing a single perithecium and an antheridial appendage. Appendage clearly 
differentiated, simple and without branchlets, consisting of an adnate stalk-cell and five cells super- 
posed above it, the two terminal ones each bearing a single antheridium, the terminal antheridium spinose, 
the subterminal one adnate to the terminal cell of the appendage. 
A very simple generic type closely allied to Acompsomyces and also resembling Stiy matomyces in the 
characters of its appendage. The latter appears to be similarly distinguished by the presence of a stalk- 
cell, a basal cell and several (four) cells superposed above it. The two antheridia are superposed and 
appear to have been separated from the terminal and subterminal cells. Although it is difficult to point 
out crucial differences which separate this appendage clearly from that of Stigmatomyces, unless it be 
the sterility of the four lower cells, there can be no question of the distinctness of the generic type, which 
is in reality nearer that of Acompsomyces. In this, however, the subterminal cell of the appendage is 
sterile and the cell below this bears more than a single antheridium. The type bears a very strong re- 
semblance to Pdyascomyces] but, since nothing is known as to the true character and disposition of the 
antheridial cells in this genus, the relationship remains problematical. 
Acallomyces H-OMALOTJE Thaxter. Plate XXII, figs. 1-4. 
Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 24. June, 1902. 
Hyaline becoming faintly tinged with straw-yellow. Receptacle very small the lower half becoming 
tinged with smoky brown; the basal cell hardly distinguished from the foot, and commonly obliterated 
by a thickening of the walls in this region, so that the receptacle appears to be one-celled. Basal cell of 
I 
