MOXOGRAPII OF THE LABOULBEXTACE.f;- 345 
The five types of this shigular species are all in poor condition, the appcnda'^-f'S being. fi>r 
the most part, broken ; yet it luay br recognized without dilhculty In' the peculiar outgruwili 
from one of its lip-cells, which distinguishes it from all oilier species wKh the <^xccption of X. 
Gyrimdarumy all tlic lip-cells of whicli arc ;ipi)endiculate in a somewhat similar faslnon. IL 
appears to be peculiar to the single si>oci|38 of Bembidinm mentioned, and w;is found in two 
instances only on the margin of the riglit elytron near the base, TIic outgrowlh in all <he fypes 
proceeds from one of the lip-cells on tlic right of the pore. The infested beetles were found 
among material kindly collected for the writer by Miss A. M. Parker, 
Laboulbenia fumosa Thaxter. Plate XXTT, figs. 0-20. 
Proc. Am. Acad. Arts and Sri. Vol. XXIV, p. 12; Saccardo S>n<»ge, Vol IX, p. 11.12. 
Smoky brown with a slight olive tinge. Pcrithecium becoming almost opaque, tapering 
rather gradually to the somewhat blunt tip, the lip-cells turned slightly outward. u\[ipendnges 
consisting of two basal cells, the outer followed by a roundish cell which, by successive pro- 
liferation on its inner side, gives rise to a number of branches; the first of which, originally 
terminal, becomes lateral, curv<ul outward, blackiiu'd below, and It^ars Severn! erect, usually 
simple branchlets. The inner basal cell produces on either side a number of branches, often 
once or twice branched near the base, nearly straight, erect, tapering; the whole forming a 
dense tuft. Insertion-cell broad, a hyaline portion projecting up between the two basal cells. 
Receptacle more or less tinged m ith brown, paler below, raiher stout, ncvor elongate, expand- 
ing gradually from below upward. Spores, 65-60 x 5-5.5 /x. Perithccia, 120-^130 X 50-75 /i. 
Appendages, 75-100 >i. Total length to tip of pcrithecium, 250-325 /x; greatest width, 76- 
100/t. 
On Platynus eincticollls Say, New England. 
This species is a common one always occurring at the tips of the elytra and extending to 
the adjacent apex of the abdomen. It is very closely allied to L. luxurianSj which, curiously 
enou<^h, grows in exactly the same position on species of Bcmhidium^ but is distinguished hy its 
large size and straight appendages. The basal cell of its outer appendage bears a proliferous 
cell, the first (oniginallj terminal) branch of which becomes pushed outward by its successive 
proliferation, and the blackened outer half of this Ijranch from which two to four ])ranchlc1s arise 
vertically, is quite characteristic in appearance; the branchlets, however, usually breaking off in 
mature specimens. The next branch found within this primary V)ranch may resemble it to some 
extent, but is more often simple, like those which succeed it. The species grows densely 
crowded, and I have never found it on other species of Platynus commonly associated with the 
one mentioned, which occurs in very wet situations along brooks, where it liidcs under stones or 
in w^et rubbish. A species very similar to this occurs in the same situation on the elytra of 
AnopJitJialmus tenuis Horn in Indiana ; but my material is hardly sufficient to form the basis of 
a diagnosis. 
