MONOGKArU OF THE LABOULBENIACE^. 277 
colls of which end in papillate enlargements, ^vhilc one of them produces posteriorly a clavnte 
outgrowth bent abruptly upward near its base and extending free above the apex. Below the 
base of this projection^ and on the same side, the pcritliecium is j)rominently hunched. Basal 
cells of the perithecium often rounded and bulging. Receptacle consisting of from fifteen to 
) twenty superposed cells, somewhat longer than broad, the two lowest always sterile, the third 
always producing a perithecium, the sixth, more commonly the seventh, producing an anthe- 
ridium; the cells immediately above the third producing perithecia or remaining sterile ; those 
immediately above the sixth or seventh producing perithecia or antlicridia or remaining sterile, 
the total number of anthcridia rarely exceeding three; the i)erithccia rarely ]»i'oduced two from 
a single cell The terminal cells of the receptacle, usually five or six in number, benring 
septate, simple, lateral, sterile appendages. The latter slraight, usually two borne on op- 
posite sides of a given cell, but sometimes three or four from iho same cell, deeply blackened 
and somewhat constricted in the region of their basal septum, consisting more commonly of 
seven cells, the fourth and sixth, and notably the fifth, broader and shorter than the others, 
the terminal cell longer than the rest and tapering to a blunt tip. Similar appendages rarely 
produced even below the uppermost perithecium. Spores, rery long and slender, 120-130 x 5 fi. 
Perithecia, 140-lGO x 50-60 /z; the outgrowth, 85xJ0^; the stalk-cell, 50-85x25-30/1- 
Receptacle, 400-G80 x 25-35 ^ ; average, 500 x 28 /x. Appendages, 140-200 x 20 fx. 
On PheropsopJius sp., Booloo Valley, banks of the Ceeas Uiver, Northwest India. 
Sufficiently abundant material of this fine species was obtained from the inferior surface of 
the thorax and abdomen of an undetermined Pheropsophus from the above-mentioned locality in 
the collection of the Museum of Comparative Zoology. Although varying somewhat in the 
number of perithecia developed, it seems to be an unusually constant form. Even the sterile 
appendages, although they vary in number in different individuals, arc remarkably uniform, and 
rarely vary in respect to the number of cells which compose them. In many cases the first, and 
sometimes others of the perithecia become aborted, as a result of the nou-fcrtilization of their 
trichogynes; and there may be three or even more such undeveloped perithecia on the same in- 
dividual, with from one to three or even four which liave reached maturity (Plate iV, fig. 8), so 
that although there are more commonly not more than two perithecia in a given individual, there 
may be six to eight, developed and undeveloped, in exceptional cases. In their color, habit, and 
peculiarly blackened bases, the sterile a])])endagcs, curiously enough, recall those of the Lal)oul- 
bcnia (Z. Fheropsophi)^ which infests a similar host in Africa and South America; so much so 
that a young specimen, which was the first examined, was for the moment mistaken for an 
abnormal condition of this species. Owing to the large size of the sexual organs, this form ofifers 
unusually good opportunities for a closer study of the sexual processes, and it is to be regretted 
that it should occur in so remote a localitv- 
It seems doubtful whether the lower half of tlie two-celled body described as the trichogyne 
is not morphologically a portion of the trichophoric cell, since, though it is separated from the 
latter by a constriction, no septum is visible between them. In one instance, a second 
trichogvne was seen developed from the base of this basal half, the first trichogyue having failed 
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to become fertilized. 
