432 



THAXTER. MONOGRAPH OF THE LABOULBENIACEjE. 



main body; the cell rows consisting of but five cells, including the very small lip-cells, and the cells of the 

 sterile base; the three upper tiers of cells forming an abruptly differentiated, thick walled, long, tapering 

 beak-like termination, curved outward or inward, often at right angles; below which the distal end of the 

 outer wall-cell forms a slight rounded prominence, the very small lip-cells forming a slight enlargement. 

 Appendage similar to and continuing the axis of the receptacle directly, or diverging very slightly; the 

 cells giving rise to a double series of branches, which are subtended by small cells obliquely separated at 

 the distal angles, those from the lower cells short (anthcridial ?), those from the upper long and several 

 times branched; the main appendage usually broken, but in young individuals consisting of from twenty 

 to twenty-five superposed cells. Spores 48 X 3 /«. Perithecia, ascigerous portion 175 X 45-50 p., beak- 

 like termination 140-100 /*, sterile basal portion about 100 /i. Receptacle 270-430 X 30-35 /i. Ap- 

 pendage (young individuals) 350 ji, the branchlets 200 X 6 /i. 



On legs and inferior surface of Phwnonotiun estriatum Say. Eustis, Florida, October. 



Although but a small percentage of individuals of this host were found to be infested, abundant 

 material was obtained, the beetles occurring in large numbers on the under side of pieces of board floating 

 along the margin of Lake Eustis. In two individuals the parasite was attached to the inner surface of 

 the elytron near its tip, all the individuals being remarkable for the monstrous development of the peri- 

 thecium which reached a maximum length of one millimeter. It is possible that the following species 

 may also be a similar variation due to its position of growth. Although the branches of the appendage 

 are originally opposite in two rows, the latter become as a rule approximated on the inner side, as a result 

 of greater external growth in the cells of the main axis. 



Hydrophilomyces reflexus nov. comb. Plate LXIX, fig. 3. 

 Ceratomyces reflexus Thaxter. Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 447. April, 1900. 



Hyaline with a few purplish or reddish suffusions on the receptacle, which is composed of from about 

 twenty-five to fifty superposed cells with occasional longitudinal septa; the foot hyaline, or slightly yellow- 

 ish, much enlarged, bladder-like or spherical; the distal portion distinctly broader, its axis coincident 

 with that of the erect appendage which forms a direct continuation of it. Perithecium small with few 

 asci, abruptly recurved at the base, its apex thus sometimes touching the inflated foot; nearly straight, 

 tapering almost symmetrically to the blunt slender tip; the ascigerous cells situated at the base just above 

 the small angular stalk-cell. Appendage usually flat and broader than the receptacle toward its base, 

 the superposed flat cells of which it is composed producing appendages on either side much as in C. rhyn- 

 chophorus. Spores 70 X 4 /i. Perithecia 140 X 20 ji. Receptacle 140-280 fi. Appendage 200-400 fi, 

 Foot about 30 X 30-38 /z. 



On Phccnonotum estriatum Say. Eustis, Florida, October. 



Specimens of this species were found on several individuals, but never fully matured, growing on the 

 soft integument of the upper surface of the abdomen just beneath the elytra, from under which they may 

 be seen projecting. The branches of the primary appendage remain opposite and the basal cell of the 

 receptacle assumes a bulbous form. The cells of the receptacle, in fresh material, were characterized by 

 reddish suffusions suggesting phycoerythrin. The great elongation of some of the specimens is note- 

 worthy, the receptacles comprising from forty to fifty superposed cells. As previously mentioned this 

 species may prove to be nearly an abnormal form of H. rhyncophorus . 



RHYNCHOPHOROMYCES nov. gen. 

 Ceratomyces Thaxter pro parte. 

 Receptacle indeterminate, consisting of a considerable and variable number of supeq)osed cells 

 terminated directly by the perithecium. Perithecium consisting of a well defined venter and clearly 

 distinguished neck in which the wall-cells are very numerous and indeterminate The base of the append- 

 age indistinguishable from the venter of the perithecium, from the walls of which it appears to arise at 

 maturity, together with its basal branches. Antherozoids extruded and abjointed distally and laterally, 

 and for the most part singly, from cells composing the branchlets of the appendage. 



