THAXTER. — MONOGRAPH OF THE L A |t< »l I.I? \I.V! 1. Ill* 
n s|m 
Icevis 
ilic insertion-) II and 
i 
even divided, as in L. proliferans. Its color is very pair, and the ap}xndages an too much broken for 
comparison, but it hardly seems distinct. The type is most readily distil _ lislu d by its nan r cptach 
cells III and IV being especially large, and its relatively very small perithecium, which i.« almost wholly 
adnate to the receptacle, except the tip. The tyj>e is derived from a host collected by Charles Darwin on 
his famous "Voyage of the Beagle." 
Laboulbenia Ozaense nov. sp. Plate LXIII, Fig- 11. 
Rather evenly suffused with dirty yellowish, faintly shaded with brown. Perithecium mote than 
half free, relatively small; the tip relatively large; the lips prominent, transparent, subtcndi I by black 1 
brown suffusions. Receptacle normal, cells I and II subequal, cells 111 IV not much smaller and sub- 
cqual, the external walls suffused with brown; cell V triangular, its upper margin oblique. < Mm r append- 
age consisting of usually three cells obliquely superposed, the u | ) | >e r 1 )caring two, tin n t l>carin« i rnally 
single tapering simple branches about equal to the perithecium in length, distally hyalim below, externally 
and at the base, suffused with rather deep blackish brown: inner appendage consisting of a basal << II 
which gives rise to an antheridial branch, occasionally on both sides, which onetinx aria at the ba «• 
a short sterile branch; the antheridial branch consisting of a single stalk-cell, constricted at it- deeply 
blackened base, above which it is abruptly inflated, assuming a spherical form and bearing tin- e or four 
large antheridia side by side in a fan-like fashion, their slender tips reaching to the apex of the peritb i ium. 
Insertion-cell translucent reddish brown, rather broad and oblique. Total length to tip of perithecium 
220 ft; greatest width about 00 ft. Perithecium 90 100 X 30-32 ft. Receptacle to ajx x of cell \ . about 
150 ft. Antheridia 36 ji. Spores about 55 X 5 ft. 
On Ozccna mujuVwoUis Schm., Berlin Museum. No. 044, Venezuela. This species occurred ai tin 
tips of the elytra of its host and is very clearly distinguished, by its peculiar antheridial brand,, and lai 
antheridia, from the other forms (L. Pachytdis, L. pmctalata and I. torfuosa) occurring on PachyteU* 
and its allies. The types show very little variation in form, size or color. In a tew individuals the mi r 
appendage gives rise to two sterile branches, one on either side, from the bases of which the antheridial 
f 
branchlets arise. 
Laboulbenia tortuosa Thaxtcr. Plate LXIII, fig. 10. 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 206. 
]>< 
Perithecium with hardly more than the tip free, relatively small, externally suffused with i ky 
brown and concave through the presence of a well defined subterminal hunch, above which the some- 
what pointed well defined outwardly oblique blackish-brown tip is abruptly differentiated, tl lip-rdgj-s 
pale brown translucent. Receptacle very pale reddish or yellowish, variously bent, sunn tin* s at rtgh 
angles or at an angle of forty-five degrees above cell II; cells I and II straight or mon frequentty eel 1 
curved strongly, while there is often a less pronounced curvature in the opposite Arection^immediatei) 
above it. Insertion-cell horizontal, about opposite the external hunch of the perrtheemm. Ou r append- 
age consisting of a very large basal and somewhat broader subbasal cefl, the two commonly as broad as 
or broader than any portion of the receptacle with which they are concoterous; the upper oute angle 
of both cells marked by the black insertion of a short simple branch, usually broken off. the aibfcj a I- I 
ptum. Perithecia 85 X 27 ft 
uiucivciieu uasai septum, x eimtecu* ot> /\ -• /<•• *" — » * ,• -.i,. ,.;, m ,N 
pendage, to upper blackened septum 50 ft, by 28 ft wide. Spores about 55 X 5 J (m pent ■ . n • 
tc si ace us 
Arizona 
ins 
