328 



MONOGRAPH OF THE LABOULBENIACEJE. 



Laboulbenia filifera Thaxter. Plate XIV, figs. 19-22. 



Proc. Am. Acad. Arts and Sci. Vol. XXVIII, p. 165. 



Perithecium tinged with olive-brown, the apex deeply blackened, broad, more or less evenly 

 rounded, or nearly truncate, often symmetrical. Appendages consisting of two basal cells, the 

 inner minute, the outer large, usually followed by a sub-basal cell, from which arise two very 

 elongate, simple, erect, rather closely septate branches, at first dark brown above their nearly 

 hyaline basal cells. The inner appendage consists of two short, hyaline, fertile branches, one 

 of which may produce a long and sterile branch. Receptacle short, about equalling the peri- 

 thecium in length, the anterior margin rather abruptly diverging above cell II. Spores, about 

 50 x 4 /x. Perithecia, average, 25 x 90 fi. Appendages, longest, 550 Total length to tip of 

 perithecium, 150-190 /a. 



On Anisodactylus Harrisii Lee, A. nigerrimus Dej., A. interpunctatus *K\vhy , Harpalus pleuri- 

 ticus Kirby, and H. erythrop>us Dej., Maine, Massachusetts, Pennsylvania. 



A common species found usually densely crowded along the outer margin of the elytra 

 towards their base, less frequently elsewhere. The very long outer appendage is usually broken 

 off in part. The two specimens figured are type forms, but the tip of the perithecium is not in 

 all cases so abruptly truncate, and the lip-cells are sometimes distinctly turned outward with a 

 sub- hyaline area about the lateral pore. The hosts are common everywhere about ponds and in 

 fields. 



Laboulbenia Hageni Thaxter. Plate XVII, figs. 20-22 ; Plate III, fig. 4. 



Proc. Am. Acad. Arts and Sci. Vol. XXX, p. 470. 



More or less deeply tinged with brown. Perithecium slightly inflated, tapering to the blunt 

 outwardly oblique apex, which is blackened below the hyaline lips. Appendages ainsing from an 

 outer and an inner basal cell, the outer of which is followed by a squarish cell of about the same 

 size, from the end of which project four rather short, rigid, slightly divergent hyaline branches, 

 which taper to blunt tips, and, as a rule, hardly exceed the tip of the perithecium : the inner 

 basal cell gives rise to two squarish cells, one on either side, each of which bears usually a pair 

 of branches similar to those just described. Receptacle short and stout, normal in form, the 

 lower portion of the basal cell hyaline. Perithecia, 55x18/*. Appendages (longest), 65 m- 

 Total length to tip of perithecium, 100 p. 



On Termes bellicoms var. mozambica Hagen, Africa. 



The occurrence of a most typical and decidedly insignificant looking species of this genus on 

 a larva of the worker of a species of white ant is certainly quite unexpected in view of the 

 wide difference which exists between this neuropterous host and the usual insects infested 

 by the genus. But for the four stiff branches arising from the sub-basal cell of the outer 

 appendage, and suggesting the roots of a molar tooth, it would be difficult to specify its dis- 

 tinguishing characters unless it be the fact that it is the smallest species of the genus. The 

 species is dedicated to the memory of the late Professor Hagen, by whom it was observed many 

 years since on the same specimen examined by the writer, collected by Dr. Peters in Africa, 

 from all parts of which sufficiently abundant material was obtained. 



