MONOGRAril OF THE LABOULIJENIACE.E. 201 
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Chitonomyces uncinatus Tliaxtcr. Plate XXVT, fig, 23-24. 
IlKniATOAiYCKS UNCINATUS * Proc. Am Arnd. Arts aud Sci. Vol. XXVII, p. 33. 
Evenly suffused with pale amber-brown, rcrithccium large, curving evenly inward to the 
somewhat pointed apex. Basal cells of the receptacle rather blender, tlic terminal cell pushed 
to one side and bent past the apex of the peritheciuni by a somewhat i]iduratcd,Munt oufgroAvth 
from the sub-terminal cell, the tip of whicli it nearly equals, rcrilhecia, 75-85 x 20 /i. Total 
length, 110-130 fx. Basal cells of receptacle, 37 /i. 
On Laccopliilus maculostis Germ., and Ilydropoms spvrhni Lee, Connecticut. 
A rather rare species, occurring in groui)s on the inferior surface of the abdomen of its host, 
and distinguished by the peculiar development of the sub-terminal cell of the receptacle, which 
gives its extremity a somewhat hooked appearance. 
Chitonomyces affinis Thaxter. Plate XXYI, figs. 12-14; Plate VIII, figs. 29-30. 
Heimatomyces apfims; Proc. Am. Acad. Arts and Sci. Vol. XXVil, p. 31, 
Rather strongly suffused with amber-brown. Peritheciuni commonly slightly curved inward, 
or nearly straight, the tip often sliglitly bent outward. Basal cell of receptacle large, sub-lri- 
angular, suffused laterally and terminally with deep black-brown: sub-bnsal cell very flat; 
terminal cell small, its axis bent strongly inward. Spores, 50-55 x 3/i. Perithecia, 100-110 x 
30 /Lt. Basal and sub-basal cells of receptacle, 40-45 /i. Total length to tip of pcrithccium, 
150-170 )u. 
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On LaccopTiilus maculosus Germ., and Ilydroporus sp., Connecticut, 
This species occurs near the margin of the right elytron toward its tip, and is distinguished 
from other species of the more simple forms by its large, blackened basal cell and the position 
of the terminal cell of the receptacle, which is bent against the perilliccium on the left side, and 
is partly concealed by it when viewed from the right. It is one of the commonest species, and 
is easily detected from its dark color. 
CHJT0N03IYCES HYALTNUS ThaxtcF. Plate XXVI, figs. 10-11. 
HEniATOMYCES HTALiNus : Proc. Am. Acad. Arts and Sci. Vol. XXVII, p. 31. 
Hyaline or very faintly tinged wilh yellowish brown. Perithecium large; at first himchcd 
externally and bent inward near the apex ; at maturity becoming nearly straight, tapering 
slightly to the rather narrow apex, which is bent somewhat abruptly outward ; one or two 
oblique ridges more or less distinct below the apex on the inner margin, the walls of the cells 
composing the outer margin greatly and often very abruptly thickened below the tip. Lat>al 
portion of the receptacle rather short and stout, the two lower cells nearly equal. Spores, 30 x 
2.5 /i. Perithecia, 75-90 x 20 /i. Total length to tip of perithecium, 110-120 /x. 
On Laccophilus maculosus Germ., Connecticut. 
This species, although it possesses few striking characteristics, is yet quite distinct from nny 
of the others, its chief peculiarity consisting in the fact that the walls of the cells composing the 
