THAXTER. — 



MONOGRAPH OF TIIK LABOTJLBENIACEiE. 



351 



cell; cell V r small and roundish, the dark portions indistinctly punctate. Outer appendage consisting of 

 a divergent main axis of three cells, broadly and deeply blackened externally and at the septa; the two 

 lower bearing a single, usually simple, divergent branch distally From the inner side; the upper bearing 

 two such branches terminally, the outer deeply suffused with blackish brown, especially toward its base, 

 ami directly continuous with the suffused portion of the main axis; the basal cell of the inner appendage 

 half as large as that of the outer, giving rise to a rather short simple branch on either side, or often itself 

 simple, bearing one or two solitary antheridia near its base. Spores about 85 X 5 /i. Perithccia 1 50— 

 165 X 40-55 fi including the stalk (20 /jl). Receptacle 185-220 X GO /<. Longest appendages 290 //.. 

 Total length to tip of perithecium 360 [i. 



On Hettuodes Nebrioides Nietn., Ceylon; Berlin Museum, No. 1050. 



This striking species seems most nearly related to L. Ceyloncnsis, L. spiralis and L. Planetis, the ap- 

 pendages of which are very similar. Its typical form illustrated in fig. 11, is very clearly distinguished 

 by its free perithecium, and the peculiar conformation and coloration of the receptacle. The types were 

 associated with a few mostly broken specimens of L. spiralis which, however, is distinguished from it by 

 the form and coloration of the perithecium and receptacle, and the relation which the former bears to the 

 latter. 



Laboulbenia Planetis Thaxter. Plate LVIII, fig. 6. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 50. June, 1902. 



Perithecium large and stout, clear transparent brown, except the subhyaline base, which is separated 

 by a more or less clean-cut line of demarcation; the wall-cells with a slightly spiral twist, the tip abruptly 

 distinguished, symmetrical or nearly so, black, except the evenly rounded subhyaline symmetrical lip- 

 edges. Receptacle rather slender, subhyaline with pale brownish shades; cell II twice as long as the 

 basal cell; cell IV bulging rather prominently externally and more deeply suffused with brown. The 

 insertion-cell deep black, broad, thick. The appendages erect, their branches curved toward the perithe- 

 cium: outer appendage normally consisting of a main axis of three superposed cells, externally broadly 

 blackened, the blackening involving the septa and adjacent external portions of the cells; the distal cell 

 bearing three branches; an outer and an inner simple, and a median one, once branched, the outer deeply 

 suffused about its base, which forms a direct continuation of the suffused external area of the main axis; 

 the remaining cells each producing a usually simple branch distally on its inner side; all the branches 

 long, slender, distally thin-walled and hyaline, curved toward the perithecium, the lower somewhat con- 

 stricted, and more or less deeply suffused at the lower septa: basal cell of the inner appendage half as 

 large as that of the outer, bearing a branch on either side, from the basal cells of which arise often two 

 branchlets, similar to those of the outer appendage. Spores 65 X 5 ii. Perithecia 155-165 X 55-60 fi. 

 Receptacle 290 ji. Appendages 360-435 /x. Total length to tip of perithecium 400-425 p.. 



On the thorax of Planetes biniaculatus MacLeay, Java; Berlin Museum, No. 1047. 



A beautiful species, closely allied to L. Helluodis, but having a very different receptacle and perithe- 

 cium. Three specimens, only, have been examined, two of which are in nearly perfect condition. 



Laboulbenia Rougetii Robin. 

 L. Europcea Thaxter. 



It seems quite certain that what I previously described as L. Earopa>a is in reality the species figured 

 by Robin, although the plates are quite misleading, apparently representing individuals in which the 

 appendages have become more or less abnormal through injury. So large a number of European 

 Brachini have been examined, however, on which L. " Europaea" is the common species, that there seems 

 no question as to the correctness of the reference. 



The typical form, as it occurs on Brachinus, and also on Apt inns, Leistus and Chken ins, is distinguished 

 by its almost obconical receptacle, which is relatively broad distally; the form of the perithecium, which 

 normally tapers very evenly from its base to the blunt apex, the outer and inner margins often nearly 



