366 



THAXTER. MONOGRAPH OF THE LABOULBENIAC'E.E. 



with that in which the individual is flattened. A somewhat smaller variety, which closely resembles 

 this species, was found on the legs of a species of Brachinus from Port Natal, Africa (Berlin Museum 

 No. 983), but the material is too scanty and not in sufficiently good condition to determine definitely. 



Laboulbenia rhinophora Thaxter. Plate LXV, figs. 8-9. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 199. Dec, 1899. 



Perithecium large and stout, dirty smoky brown, the lower half much deeper and united to the recep- 

 tacle, the base nearly opaque, one of the subterminal wall-cells forming a terminal blunt finger-like brown 

 outgrowth, close beside the rather small internally blackened tip, which it exceeds in length. Recep- 

 tacle stout, the basal cell small hyaline; a blackish brown suffusion becoming opaque involves the upper 

 part of cell II, cells III, VI, and VII, as well as the basal cells of the perithecium ; cells IV and V very 

 large and nearly parallel, translucent; the suffused parts, when not opaque, marked by darker trans- 

 verse dots and striae. Insertion-cell very large, triangular, quite unmodified. Appendages consisting of 

 two basal cells concolorous with insertion-cell, the outer usually somewhat larger, both protruding up- 

 ward and slightly overlapping, producing directly numerous branches (four to eight from each cell) which 

 arise in more than one row from their outer surfaces; all the branches once to twice branched, the lower 

 segments deeply constricted at the purplish septa, the distal cells without constrictions at the hyaline septa. 

 Spores 75 X 5 p.. Perithecia to tip of protuberance 275-300 X 85 /<; to insertion-cell 300-340 [i. Ap- 

 pendages about 200 fi. 



On the legs of Bracliinus sp., Hope Coll. No. 252, Madagascar. 



Three mature and one young individual of this peculiar species have been examined, the former 

 all considerably injured. It is most nearly allied to L. Japonira from which it is distinguished by the 

 form and peculiar modification of its perithecium, as well as the relation of the latter to the receptacle 

 and by the monstrous development of cells IV and V of the receptacle. 



Laboulbenia concinna Thaxter. Plate LVIII, fig. 4. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 31. June, 1902. 



Perithecium opaque, nearly symmetrical, rather long and slender, straight, the lower half slightly 

 inflated; tapering very gradually distally to the broad, truncate often symmetrical tip, which is barely 

 differentiated above an inconspicuous elevation; the flat lip-edges slightly translucent brown: the basal 

 cells forming a well distinguished short hyaline stalk, the curvature of which bends the perithecium away 

 from the appendages at an angle of nearly 45°. Appendages forming a dense rather short slightly spread- 

 ing tuft, the axis of which is coincident with that of the receptacle, copiously branched, the branchlets 

 unilaterally disposed, rather closely septate; the septa mostly dark brown, except the very numerous 

 paler slightly tapering extremities, which hardly reach the middle of the perithecium. Receptacle sub- 

 clavate, the basal cell rather large, hyaline narrower below; the cells above yellowish brown, incon- 

 spicuously punctate; cells III and IV bulging symmetrically and prominently below the well-defined 

 insertion-cells; cells IV and V separated by a nearly vertical septum. Perithecia, exclusive of stalk, 

 15-180 X 33-45 ;i, stalk 25 X 30 p. Receptacle 150-185 X 55-65 fi. Appendages (longest) 125 ;i. 

 Total length to tip of perithecium 325-375 /i. 



On Casnonia sp., Buitenzorg, Java. 



A small group of mature individuals of this very pretty and distinct species was found on one of 

 several hosts kindly collected for me by Professor H. M. Richards, growing at the tip of the abdomen 

 on the upper side, and conspicuous for their large size and dark color. The tuft of appendages is so 

 dense that it has been almost impossible to determine the exact origin of the main branches. Several 

 of the latter appear to arise in radial series from the basal cell of the outer appendage, and that of the 

 inner appears to give rise as usual, to single branches on either side which are very copiously and closely 

 branched. Although the perithecium is too deeply suffused to determine this point, there seems to be 

 a twist in its wall-cells which makes the anterior and posterior lip-cells lateral in position, and gives the 

 tip its characteristic nearly symmetrical habit. 



