THAXTER. — NEW LABOULBENIACEAE. 409 



last named species ; although the conformation of the tip of the perithe- 

 cium has apparently been incorrectly reproduced in Peyritsch's plate. 



Arthrorhynchus Eucampsipodae nov. sp. 



Hyaline throughout. Perithecium straight or distally slightly curved, 

 tapering gradually from the middle, or lower, to the broad tip ; the apex 

 consisting of a slight median projection surrounded by a crown consisting 

 of four slightly shorter, broad, blunt, distinctly divergent projections, which 

 show indistinct marks of lobing and are symmetrically placed ; the stalk- 

 cell about one half as long as the perithecium or less. The basal cell 

 of the appendage constricted in the middle as in the preceding species, 

 the lower half irregularly rounded and four or five times as large as the 

 upper half, which is very small, colorless, and less than half as wide as the 

 cell above it ; the fertile cells three in number, the lower bearing four or 

 (?) five antheridia, the upper three in addition to the terminal one, which 

 is furnished with a short hyaline basal spine ; the necks of the antheridia 

 large, tapering, divergent. Receptacle as in the preceding species. 

 Spores about 45-50 X 4 /x. Perithecium: venter 250-325 X 65-75 it; 

 the stalk-cell 110-150 X 55 it. Appendage, 75-90^, the stalk-cell 

 35 X 25 (the upper half X 10^). 



On the abdomen of Eucampsipoda Hyrtli Kol., Egypt. Berlin 

 Museum, No. 855. 



Rhizomyces gibbosus nov. sp. 

 General habit more or less sigmoid. Perithecium amber brown, con- 

 colorous, with its relatively large basal cells, from which it is hardly dis- 

 tinguished, asymmetrically inflated, bent, and tapering somewhat distally ; 

 a subterminal abruptly rounded enlargement, beyond which the short 

 asymmetrical tip is clearly distinguished, bearing a large two-celled out- 

 growth posteriorly, the lip-cells being otherwise unmodified : stalk-cell 

 hyaliue, variably, sometimes greatly elongated, separated from the basal 

 cells by a more or less distinct constriction. Appendage nearly hyaline, 

 except the small deep brown sterile basal cell, the remaining cells, three 

 to seven in number, bearing short one- to two-celled brunches distally 

 and laterally on which the free flask-shaped antheridia are borne singly 

 or several together. Receptacle short and stout, the upper cell several 

 times as large as the basal cell, which appears to penetrate the host di- 

 rectly by means of a rhizoidal apparatus. Spores about 35 X 3//. Peri- 

 thecium, including basal cells, 85-108 X 30-36 /x; the stalk 60-160 X 

 18-20 fi. Appendage 65-110^. Total length to tip of perithecium 

 180-325 p. 



