MOXOGKAni OF THE LABOULBENIArFK. 307 
the w'liolc family, its spiral termination? being invarin]>ly present nnd of very regular form. 
It is possible that the lo-^rer stalk-ccU of the pcrithccium is morphologically a part of ihc 
receptacle and not homologous with the ordinary stalk-cclls. Its early dcrivalion, however, has 
not been determined. 
CoMPSOMVCES VEHTiciLLATUS Thaxtcr. Tlnto XL fl'j< n-15. 
? 
Proc. Ana. Acad, Art? and Sci. Vol. XXIX, p. 97 ; Cantharomi/rts vrrticillatns ThiiNtor L c. Vol. XXI V, p. 9* 
Nearly hyaline, becoming jiale straw-ycUow. rcrithecvum, very rarely more than one, not dift- 
tinguishrd from its basal cells, inflated below, its ^lender, terminal portion laprnng gradnnlly 
to the blunt symmetrical apex, the eight l.tnsal and »ub-basnl wall-colls producing a corrr^pond- 
ing number of more or less conspicuous prominencies, llcceptaclc two^elled, the hnf^al cell 
sometimes furnished ^vith a partly blackened outgrowth from its base. A]»)iendngrs two or 
three to eight or more, arising sub-verticillatcly from the sub-basal cell, Bimjile or sparinc'ly 
branched, the cells short and usually distally expanded* Spores, 20-22 x *^M- rerithecia, 90^ 
150 X 20-S5/1; its two stulk-colls (longest), 185 /i. Hcccptacle, 18-80 /i. Total length to tip 
of pcrithecium, 140-400 fi. 
On Siinius lonjiuaculus Mann., Anna, Illinois and Kittcry Point, Maine. 
This graceful form was first received from i*roL S. A. Forbes, ^vho kindly sent me two 
»pecmien 
) 
[it its really essential characters (the form and position of 
Its general structure, however, seemed so like that of <^<rn- 
tharoynyce^ Bledii^ received at the same time from the same source, that the two were united 
under a common generic name. Later, more abundant n)atenal of C. Bledii and the discovery 
of two additional species offered an opportunity for a more exact characterization of the gonus 
Cantharomyccs on a basis of these three species, the C, vcrticlllatns of my first paper being 
still in doubt until an abundance of material was obtained at Kittcry. 
The species varies very considerably in size according to its position on the host, specimens 
on the elytra and near the tijis of the logs being often very small. The length of tlie r<^'-^p- 
tacle also varies very considcraldy, and the hoof-like modification of the foot (fig. 13), whieh 
finds a parallel only In L^iloulhenia Philouild (Plate XXll, fig. 28) sometimes occurs. The 
rounded projections from the lower cells of the perithecial wall (fig. 11), arc also very varial)le 
in form and are often hardly apparent. Tn very rare cases the lower stalk-cell of the pcrithe- 
cium may bear two appendages from its distal end, which though almost invariably simj^le, 
may sometimes produce short branchos. Two perithecia (fig. 8) have been observed in only two 
instances. The antheridia (fig. 14) are produced in small numbers, one or two from the distal 
ends of some of the lower cells of the appendages. 
The hosts are common in dry rubbish in cultivated fields. 
