324 MONOGRAPH OF TEE LABOULBENIACE^ 
aiithcridia tcnninallj or laterally. Receptacle long and slender, but slightly expanded distally, 
the large basal and sub-basal cells forming a sub-cylindrical stalk. Spores, 46x7/t. Peri- 
thecia, 110-125 X 60 ft. Appendages (longest), 425 yu.. Total length to tip of perithecium, 
300-330 /i. 
On AnUodadylus nigerrimus Dej., Cambridge, Mass. 
This graceful species was at first taken for a variety of L. elegam ; yet it seems so constant 
in its diilerenccs that I have concluded to distinguish it as a separate species, the structure of 
the tips of its perithecium (fig. 8) being its most essential character. Its slender, flcxuous 
nppcndagcs, from their form as well as from their mode of branching, also serve as a means of 
distinguishing it, and seem to vary but slightly from the type represented in the figure. Its 
position on the host is, singularly enough, exactly the same as that occupied by its near ally, 
X. elegans. It has been found in a single locality only, near the margin of Fresh Pond, where a 
dozen or more infested hosts have been from time to time obtained. 
Laboulbenia elegans Thaxter, Plate XIV, figs. 3-6. 
Proc. Am. Acad. Arts and Sci. Vol. XXIV, p. 13. 
Hyaline, becoming finally more or less tinged with yellowish brown. Perithecium more or 
less inflated abruptly constricted below the deep black apex, the lip-cells very promincni. bent 
strong y outward from a rounded inner jet-black prominence to the hyaline tips, mouth-like 
about the pore Out.r appendage arising from a rather lar.o basal cell, above which it produces 
branches, the outer simple, rigid, divergent, tapering, the inner producing from its basal cell 
in l^^^rf l^T^'^T" '"^^'^^^^ '^^•*^^^' ^-^'^'"^^ - ^-^' ^^^^^^-^ -ngly o' 
two usually somewhat inlate Zl:^J^t\^:r'''''ff' ^^"^^" ^^^^" '''^ ''''"'' *^'^ 
-O0X4 5 Per.hecia, 110-150 x^:^CeS^^^^ ~^' ''''^ '^^^ 
Total length to tip of perithecium, 290 ;. (larger, 335 ,) ^ 
On Ilarpalus pennsghanicus DcG., New England. 
A common and verv nrpffyr c,,«^,v. iu_„ , 
50-75 
graceful 
preceding. It is one of tho few form, in whiol, t ' , , , ^"'"" '" "' ""■"' "'™ "" 
though not absolutely, invanablo It i Tr\ ^""l "^ "^ *''° "'"'' ""'^■"'"S" '^ ''''"°''' 
Tery old individuals, and is vcrv constantt f '"t -^^ "'''"■''''• '"''""'"S '"•"»'"'■'' ""'^ "' 
thorax of its host on the ri-rht'sidp ' 1, r " """'""'"^ '" ""^ '"""'"' f"™ "' *'«' P™' 
■•••g n>a..gi„; but very rard/it ^ctr 12!^ "*" ''°'"'^'''^' '''" ^"^' '*"'">' "'^ '""j^^*- 
corresponding left side, and has been once'noZ,,'" """"""^ '""' ^- "'"■'''"''"' "" "'" 
mon,.-,nd may bo found in late Au-^ust and oJV\ , '""'"''" '"*'''''■ "^'"^ '"'■^' '^ ™''->' """'- 
rag weed ^Amiro^ia aHemuicfau-) ,„ open 60^7 ' ''"""''"= "" P"""^" "^ "'* "=°°"""" 
