360 MONOGRAPH OF THE LABOULBENIACE^. 
The perithccium is but slightly flattened, its cell-rows composed of four cells, and contains 
four ascogcnic cells at maturity. The trichogyne, which has been observed in a few instances, is 
rather short and sparingly branched and septate (Plate II, fig. 6). The sterile appendages are 
very cliaracteristic in appearance, being invariably simple, usually quite opaque, except along 
thoir upper margin, and more or less distinctly septate. 
The species occur on beetles belonging to the Carabida3 and Staphylinida), two of them on 
ca/e beetles, and are found in Europe, Africa, and North America, including Mexico. 
Ehachomyces lasiophorus Thaxter. Plate II, fig. 6; Plate XII, figs. 7-11 and 17-19. 
Proc. Am. Acad. Arts and Sci. Vol. XXX, p. 467 ; Acanthomjces lasiophorus Thaxter 1. c. Vol. XXVII, p. 37. 
More or less suffused with blackish brown. Perithecimn sessile, becoming brown, somewhat 
inflated, nearly symmetrical, tapering to a rather blunt apex. Appendages arranged in two rows 
m 
of larger bristle-like members, hyaline-tipped, blackish below, running from the sub-basal cell to 
the apex of the receptacle, where they surround the base of the peritliecium, which exceeds them 
by about half or one-third its length ; from the cells of the receptacle between these two rows arise 
smaller appendages, which become more numerous towards its extremity. Receptacle slender 
at the base, expanding upward, consisting of a main axis of about twelve superposed vertebra- 
like cells, at first hyaline, becoming blackish, and of a series of smaller cells almost completely 
concealed by the appendages. Spores, 30 x 3/i. Perithecia, 140-145 x 50 /x. Larger append- 
1 
ages, 76-90 /i. Receptacle, 175 /a. 
On Atranus puhescens Dej. New Hartford, Connecticut; Stony Brook, Mass.; Virginia. On 
Badister micans Lee, Acupalpm earns Lee, and ^e??. indet, Kittery Point, Maine. 
A few specimens of a species apparently identical with this were found on a small species 
of Platyuus captured in swampy woods at Kittery, but these as well us the liost have been 
unluckily lost. The usual host of the species is quite rare, and I have found but four specimens, 
two of which were infested. The Virginia specimens were collected near Washington by Mr. 
Pergande. The compact form, brown inflated perithecium, short, stout, and closely apprcsscd 
appendages serve to distinguish the species from its allies. 
Within the past year further material of this form has been collected at Kittery on the 
two additional hosts above mentioned, from which it is apparent that the species is subject to 
considerable variations in size and form. Figures 17-19 of Plate XJI were drawn from this 
material, and fig. 17 represents the greatest divergence from the type observed in any of the 
mature individuals. 
Rhachomyces speluncalts Thaxter. Plate XI, figs. 23-25. 
Proc. Am. Acad. Arts and Sci. Vol. XXX, p. 468. 
Perithecium more or less deeply suffused with brown ; short and stout, with a broad, bluntly 
rounded apex. Receptacle slender, the main axis constricted stron-ly ut the septa, its cells 
rather small, the basal slender and cyhndrical ; the remainder, about nine' in number, all evenly 
and rather deeply suffused with brown, and more or less uniform in size. Appendages mostly 
