402 THAXTER. — MONOGRAPH OF THE LABOULBENIACE^E. 
to tip of ])erithecium varying from 150 to 900 /i or more); in color; in the development of the outer append- 
ago, which may he short and compact or elongate, consisting of only one or two cells or many celled; 
and in the relation of the perithecium to the receptacle, to which it is variably united. 
Additional material has been examined as follows: British Museum No. 572 on Ozarna parallela 
\V., Rio Janeiro; No. 574 on Pachyteles sp., Ega, Amazon; No. 573 on Ozcena Rcichii Guer., Columbia; 
No. <»72 on r<t<'lit/f< !<s Mexican us Chaud., Toxpain, Mexico; No. G71 on P. seriatoporus Chaud., Bugaba, 
Mexico. Hope Collection No. 281, on Goniotropis rufipes Hope, New Grenada; No. 280 on P. Brazil- 
irnsi.s Gray, Brazil ; No. 285 on Pachyteles sp., Brazil. In the Berlin Museum No. 945 on Ozcena Reichii 
Guar., New Grenada; No. 946 on O. pedestris N., Bogota Columbia; No. 948 on O. glabra Klg., Brazil. 
In U. S. National Museum No. 24 on P. Mexicanus Chaud., Mexico (very typical specimens). 
Laboulbenia puxctulata Thaxter. Plate LXIII, fig. 12. 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 197. Dec, 1899. 
Perithecium about three fourths free, dark brown, translucent, curved toward the appendages which 
topped 
Receptacle short and 
i 
J 2( ) 
stout, the basal cell small, short, hyaline, contrasting, the rest concolorous with the perithecium, but 
darker and distinctly punctate with dark brown spots. Outer appendage consisting of a series of from 
three to about six successively smaller superposed cells, from each of which a simple tapering brown 
branch arises, blackened about its subbasal septum, the successive branches superposed in a vertical 
external row, the basal cell of the inner appendage producing usually a short one-celled antheridial brand 
bearing a single small antheridium. Peritheeia 120 X 45 p. Total length to tip of perithecium 200- 
fi; to insertion-cell 125 /i. Appendages 100-120 p.. 
On Pnrinjieles parallclus Chaud., Brit. Mus. No. 575, Para: on P. por rectus Chaud., Brit. Mus. 
No. 070 (Biologia Coll.), Pantaleon, Guatemala. 
Although obtained from widely separated localities, this form, which occurs on the legs of its host, 
is in both instances very constant in its characters, and quite unlike small short forms of L. Pachytrtis 
which are often found growing in a similar situation. Although its appendages are practically the same, 
its peculiar short hunched form, the shape of its perithecium, and the coarse punctation of its receptacle 
above the hyaline basal cell serve to distinguish it at once. 
Laboulbenia Darwinii Thaxter. Plate LV, fig. 2. 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 170. Dec, 1899. 
Perithedum hyaline becoming pale straw- or amber-yellow, sometimes with a shade of brown, rela- 
tively small, its upper third or less free from the receptacle, the tip black, abruptly distinguished, the broad 
lip-edges translucent purplish brown. Receptacle relatively stout, indistinctly punctate with short lines 
or dot. «.t darker yellowish color, cells II, III, and IV often unusually broad. Insert ion -cell well developed, 
deep purphsh brown or black. Outer appendage consisting of a short angular brownish basal cell, which 
inner mostly simple; 
brown, the rest less deeply colored, rigid, erect. The inner appendage consisting of a smaller basal cell 
Which may produce a single branch, or two placed laterally or antero-posteriorly, short, .simple with lateral 
anthend.a or once branched. Peritheeia 100 X 30-35 /, Total length to tip of perithecium 150-275 //; 
to insi rt.on-cell 135 250 ft. Appendages, longest 200-250 fi 
On O^najandMn W., Brit. Mus. No. 572, Rio de Janeiro (legit C. Darwin); on O. lavis Klg., 
same locality, Berin, Museum No. 947: on Paclnjteles spp.; Paris Mus. No. 137, South America, Hope 
< o leet.on, Nos. 284 and 285, Brazil. Occurring usually at the base of the posterior legs or margins of 
v I \ I 1*1. 
flagellata-\\kv type 
perh a j 
The only 
