396 THAXTER. — MONOGRAPH OF THE LABOULBENIACE^E 
Laroulbenu fusiformis Thaxter. Plate LXIV, fig. 4. 
and Sci., Vol. XXXVIII, p. 39. June, 1902. 
Proc. Am. Acad. Art 
Perithecium relatively long and slender, becoming nearly opaque and marked by scattered blackish 
points more conspicuous near the base, sometimes nearly obsolete, erect, or slightly divergent above the 
stalk, straight, subfusifonn; the basal wall-cells forming a short hyaline stalk; the tip often rather 
abruptly differentiated, darker, often curved outward; the lips suffused, or the edges hyaline. Receptacle 
wry long and slender; the basal cell short, nearly hyaline; the rest pale dull brownish, indistinctly trans- 
versely striate-punctate ; cell 1 1 very long, isodiametric, throughout, except where its distal end is obliquely 
overlapped for a short distance by cell VI, separated by a short horizontal septum from cell III, which is 
much elongated and is separated from cell IV by an oblique septum, above which the receptacle shows 
a slight but abrupt contraction in diameter; cell IV more than twice as long as cell V. Insertion-cell 
black and thick, the blackening involving the greater portion of the basal cell of the outer appendage. 
Appends s very similar to those of L. pcrpkxa, the basal cells of the branches somewhat darker, the 
distal part somewhat shorter. Spores 90 X 7 } x. Perithecia 450-580 X 60-75 p including stalk (40 a). 
Receptacle 500 a to over 1 mm. X 70-75 p. Appendages 275-375 p. Total length to tip of perithecium 
1.05 nun. 
On the inferior surface of the prothorax of GaMa carbonaria Mannerh., Brazil; Berlin Museum, 
No. 960. 
This species is so large that it has been necessary to reduce to X 150 the magnification (X 2G0) 
used in figuring its allies. Although apparently so well distinguished, especially by its very peculiar, 
usual! distinctly punctate, perithecium, I feel uncertain whether it may not possibly prove no more than 
a vanetj ..I /.. ferpUxa, brought about, perhaps, by more abundant nutrition, afforded by its position of 
growth on the host It was found associate! with /, prrplexa, L. incerta, L. earn In, lata, and L. birohr 
on the saine individual. 
I.abouuii:ma perplexa Thaxter. Plate LXIII fi„ 18 
Proc - Al " AraA Arts a" d Sci., Vol. XXXVIII, p. 49. Jone, 1902. 
Kntliconun very large and long, not twice as long as the receptacle, dull translucent olive-brown, 
or becoming btacbah brown, straight, usually , rect) miMy isodiam , tri( . or oft ,.„ subchlvnto , , . ri 
b,s- v M n Y , T 7 T"' '' Va ' ine ™ ntrasti "g <*>to f»™*d by the oasal wall-colls; the sub- 
tu ■ 1 n, 1 f r V 1 "" ' m ^ mg fr ° m ° nC I"*** t0 <"* hillf » tl ™i *« tiP **. blunt, blackish, 
" i I v h - ' l,St, " g " lslu " - sometimes !»"• rather abruptly inwari. Receptacle short, the basal 
I.. 1 o" S0 " W f , °T tC ' ' hc * - °' " ,e r "'"P tade hm "y ««*<*°g t i» length, dWy olive 
brown, be,„„„„g more deeply suffuse,! with bmwi, or H...U.1. t „ „_., "„ ... . _°J. .... „ 
•ell II 
cc 
II III VI ™,i „,, .,, ' ,.„ . ' J 0DI >que si-iMu, its lower third or fourth, only, free; colls 
pit ,'t , „,n . "o <hf ering greatly in size, their inner angles often converging to a common 
™ ,.- . ; , ;; '■ , of "r'''r al r* - of the n -^ «» m •***" -Ska**,. «. 
I li V b I , I "" „' , ""' f, i """' li0n -". -■ ''»«nw„r,l often nearly to the h,l of cell 
h ,'» I ,"" ^ "' an ° l ' IV - J-rtion-eell slightly oblique, Well Lined, rather thick, 
<livergen, ; the outer consi in. If ^'^ br ° Wn; «* «— »"» "nor «« above the base, usually 
which Ik.,,,-, oxler IvT 7 k T " "'""'^ *"" " r '" OK Mi 1^ snperposcd cells each of 
hyaline toward it, extn-ini \ Y ' *" br ? U " ; " W dlstal P*" long, becoming slender, flesuous and 
«B of the inner appera ,, • Y'Y' " eV " n rxm < ""' «!' of *» P-ith,,iu,„. The basal 
'-lag similar S£ t^££?» ">> * -«- - «• outer appendage, and 
200-300 
