MONOOnAPir OF THE LABOULBEXTACE/R. 311 
B 
ropo 
The above aescription is quoted fr,mi Feyritsch (1. c), although it is quite useic- for pur- 
poses of identification. The figures given by Robin nppcar at first sight to be good, and to 
furnish a means of ideniifyiug the species ; but some of them arc alnuKst cerfainlv incorrect in 
their anatomical details, and it is doubtful whether any of them are fo be depended upon, cifhor 
as exact reproductions of the originals or as exhibiting the essential characters of the species. I 
have examined specimens of a Laboulbenia from 7?.?3r;?W^wx, taken in Germany, but in all cnses 
they correspond to the rather well marked type which I have called L, curopcca (Plalo XVI, fig. 
lo), a form which is known to occur on sevei-al other hosls. 
In a previous paper (1. c.) I have doubi fully reforrcl to this species a form found growing 
densely crowded on the legs of riaf>jrms cwrtimnis in this country ; but a comparison of nlmost 
unlimited material of the various forms which T have placed together under L. ehngata makes 
it clear that our form cannot be considered to be the s})ccics of Ilubin, unless, p('rhn]»s,the whole 
'' flaycUata'' series should be united under his name. Whether L. Rougdii, whicli is unfortu- 
type of the genus, is really distinct from citluM- L.elmjala, L. f 
le men- 
has been examined to make clear what is really infemled by Roln'n's name. It should I 
tioned, however, that I have never seen a specimen of L.flarjellaia on any of the very numerous 
specimens of American Brachinus examined, even from situations where species of riafvnus 
infested by L. elomjaia 
(Plate XX, fig. 2) 
first sight seem identical with some of the varieties of L. elongata, cannot be confused, on care- 
Eur 
A few old specimens of L.'e^iropcea in my possession, fi-om European material of Brachinus, 
in which the ap[>enilages have been broken and have produced a few abnormal branches at the 
base, bear, it must be admitted, a distinct resemblance to the dark brown figure of Robin's 
Plate X. 
Lahoulbknta europ.ea Thaxtcr. Plate XVI, figs. 15-17. 
Amber-brown. Perithecium darker amber-colored, rather narrow, but sometimes infiated, its 
tip nearly straight, broad, black except the c<lges of the coarse lips, which arc turned slightly 
outward, an olive shade extending below the blackened portion. Outer appendage hyaline, 
suffused below with olive-brown, deeply colored externally near tlie base, simple or more com- 
monly consisting of a basal and a sub-basal cell which bears two long slender tapering branches; 
more rarely the basal cell l)earR two branches directly, the inner simple, the outer bearing two 
branches from its basal cell. Inner appendage consisting of a basal cell which may bear two 
branclite, directly, or more commonly is followed by a sub-basal cell bearing a long, simple, ster- 
ile branch and a shorter fertile branch, producing several antheridia and one or two sterile 
divisions, which sometimes become elongate. Receptacle normal, a very slight olive suffusion on 
the external surface of cell IV. Spores, 55-59 x 4-4.5 fx. Perithecia, 1^0-140 x 55 fi. Append- 
ages (longest), 250 /x. Total length to tip of perithecium, 250-300/*. 
On Chlcenius ceneocepJialus Dcj., C. chryHocephahis Rossi, Callistus lunatus Fabr., Apilnus 
mutilatua Fabr., Brachinus explodens Duft., Europe. 
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