MONOGRArn OF THE I ABOrUiENlACKJE. 279 
cept that there appear to be not more than four anthcriJial cells (Plate 11, fig. 12), which dis- 
charge into a common cavity above. Tlie latlcr foi-ins llu^ slighll) iuflatcd base of the iorniinal 
conical portion of the organ, the anthcrozoids, which are comparatively minute, making their 
way through a pore at its apex. 
The ])crithccia, except in F. geminatn^ are usually solitary, and arise normally from the dis- 
tal cell-series ; but in abnormal cases they mny be produced, externally from the sub-distal or 
even the lower series (P. gem'inata). In structure, the pcrithccia i)rcscnt no great peculiarities ; 
the cell-row-s containing each four cells, the lip-cells being usually charart<M istically pnpiilute, 
and symmetrical or nearly so. The ascogenic cell is cojiunonly solidiry (Plate 1. figs. 27-81); 
but in some instances there a}>poar to be two. The trichogyne, in fhe few cases in which it has 
been observed, is very rudimentary, consisting of a vesicular prominence, sometimes shouing a 
tendency to produce slight protuberances, as in the case of Campt<»myce8. 
The four known species all occur on terrestrial beetles belonging to <he Carubidaj and 
Staphylinidaj, and on account of their small size and apprcsscd habit arc n5?nally detecit d with 
difTiculty. 
In the following dcscriptiona the side which bears the anthcridia is spoken of ns the anterior, 
the opposite ns the posterior face of the individual. The anthcridium mny thus be described as 
occurriuiT on the left side. 
Peyritschiell.4 cubvata Thaxter. Plate 11, fig. 12; Plate IV, figs. 11-18. 
Proc. Am. Acail. Arts and Sci. Vol. XXIV, p. 8. 
Pcritliccia hyaline, nearly straight, tapering to the symmetrically four-lobed apex, bent at an 
angle to the axis of the receptacle, the curvature of "which it continues. Receptacle consisting 
of two superposed cells, followed by two transverse series of cells of variable numbers (four to 
seven) ; the terminal bearing one, rarely two, pcrithccia, with a group of sterile appendages on 
eitlier side, the sub-terminal })roducing on one side, the sharply pointed anthcridium with or 
without one or more adjacent sterile appendages ; on the other side a group of from one to 
three similar appendages. Appendnges simple, cylindrical, continuous, or pseudoscptate, hya- 
line, sometimes becoming tinged with brownish. Spores, 20 x 3.5-4 ytt. Perithecia, 90-100 x 
22-29 /x. Appendages (longer), 60^. Total length to tip of perithecium, 280-300 /(. 
On Platynus eincticollis Say. Vicinity of New Haven, Conn., of Cambridge, Mn*==s., and of 
Kittery Point, Maine. 
The more common species of the genus occurring on the right shoulder of its host, and 
sometimes on the adjacent edge of the elytra. It is distinguished from the three remaining 
species by the absence of the lower transverse series of colls, the sub-l>asal cell of its receptacle 
remaining undivided at maturity. In very rare instances, two perithecia may be borne on a 
single individual; but I have seen but two cases of this kind among some dozens of si)ecimcns. 
The curved habit of the species is doubtless due to its position of growth upon the host, and is 
a character of little importance. The beetle on which it is found is common in the localities 
mentioned, along small brooks, where it may be found, concealed beneath stones, sticks, and r\ib- 
bish generally, in shady places. 
