360 THAXTER. — MONOGRAPH OF THE LABOULBENIACE^E. 
serves to distinguish this form, a somewhat similar conformation occurring only in L. Taekyia. Three 
specimens, only, have boon examined. 
Laboulbenia Tachyis Thaxter. Plate LVI, fig. 15. 
Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 38. June, 1902. 
Form slender. Perithecium tinged with brown, relatively small, narrow, erect, very slightly curved 
outward distally, about three quarters free, tapering slightly to the relatively broad, hardly differentiated 
lip; the lip-cells coarse, outwardly oblique, with hyaline edges. Receptacle slender, the basal and sub- 
basal cells hyaline, elongate, nearly equal in length; the distal portion tinged with brown. Basal cell 
of the outer appendage forming a well defined prominence distally and externally; its upper surface 
horizontal, the outer half free, the inner half bearing a solitary branch which may be rather elongate, 
oder t;i|>ering; its basal evil short, somewhat inflated, distinguished by dark septa; the basal cell of the 
inner appendage giving rise to an ereet branch on either side similar to the outer. Perithecia 00-75 X 
10-25. Receptacle 110-100. Appe 
Total length to tip of perithecium 155-220 fi. 
< >n Tackys incurvus Say, Cambridge. On Tachys sp., Cocoanut Grove, Florida, December. On 
Taekfft sp., Kilfery Point, Me. 
This small and slender species is peculiar for the conformation of the basal cell of its outer appendage, 
the external projection of which varies somewhat in different specimens. It resembles L. microscopica 
in this respect, but is otherwise quite different. It appears to be a rare species, occurring singly, or in 
pairs, on a given individual of its minute host. Specimens on the legs may be much shorter and more 
lompaet in habit. 
Laboulbenia olivacea Thaxter. Plate LV, fig. 3. 
Proc. Am. Acad. Arts and Sci., Vol. XII, p. 315. July, 1905. 
Perithecium nearly free, broader distally, olivaceous brown, paler and subhyaline distally on the 
abruptly outward to the tip, 
inner side; 
which forms a flat blunt hyaline papilla, turned outward and hardly distinguished "from the body of the 
perithecium, and wholly subtended by a wide blackish suffusion, the outer margin forming a slight curva- 
ture eontmuous with that of the receptacle. Receptacle relatively small, the basal cell small, narrow, 
and quite hyaline, except distally, where it is partly involved in the dark olive-brown suffusion of the rest 
of the receptacle, winch is coarsely punctate in the region of cells II and III, sometimes becoming wholly 
opaque and mdistinguishabk from the base of the perithecium, with the exception of cell V and a corre- 
sponding cell of about equal size which lies external to it, being cut off distally from cell IV, the receptacle 
being abnormal in tins respect. These two cells hyaline or translucent, the whole anterior margin, from 
tne base of cell D to the tip of the perithecium, forming a nearly symmetrical continuous curvature. Outer 
appendage consisting of a small slightly prominent basal cell, slightly constricted above, where it is sepa- 
rated by a blackish septum from a hyaline en- ct slender nearly straight distal portion or branch: the basal 
cell of the inner appendage somewhat smaller, giving rise to several erect branches, like the outer, which 
■va<-h about to the tip of tin. perithecium, or may be longer. Perithecia 80-100 X 32-40 a. Receptacle 
"<>/(. Appendages 75-110 u. r " r 
85-220 
On legs ami on the inferior surface of the abdomen of Lrhia sp., Java; Rouyer, No. 1390. 
< loselv resembling L. emUjms in general form, but unlike all other species' in the regular secondary 
dms.on of eell I\ by a horizontal septum, a condition which appears to be the normal one, as it is present 
n all oi the ten examples examined. This condition is approached in /, Anapfo^ii in which, however, 
the dms.on is not m van ably present, and results from a distal proliferation 
