THAXTER. — LABOULBENIACEiE. 479 



prominence. Basal cell of the receptacle often bent, expanding dis- 

 tally, much longer than the flattened sub-basal cell : the distal portion 

 of the receptacle with greatly thickened external walls, and consisting 

 of the usual four cells, the terminal one short, with a broad base and 

 bent towards the apex of the perithecium. Three small cells are dis- 

 tinct below the perithecial cavity, from the outer of which is produced 

 externally a prominent spur-like process. Peritliecia 55 X 15 //., 

 Total length to tip of perithecium 88-90 fi. Spur-like process 12- 

 30 fji long. 



On Laccophilus maculosus Germ. Connecticut. 



Distinguished from all other species by the spur-like process from 

 the base of the perithecium. The septa are all defined with unusual 

 clearness, the external walls being greatly thickened. Apparently 

 among the rarest of the twelve species inhabiting this host. 



DiCHOMTCES PRINCEPS, nOV. Sp. 



Nearly hyaline, becoming slightly and uniformly tinged with pale 

 reddish brown, sometimes narrowly edged with blackish near the 

 base. Receptacle large, consisting of a single small squarish basal 

 cell, above which are three successive transverse rows of cells placed 

 side by side, the upper margin of each series convex : the lower series 

 consisting of a long narrow axial cell, with three or four more or less 

 obliquely superposed cells on either side : the middle series consisting 

 also of an axial cell, with five to eight cells on either side, which 

 extend obliquely upwards and outwards to form a free rounded pro- 

 jection, each cell of which bears a short bladder-like appendage, the 

 antheridia prominent at the base of each projection : the third or dis- 

 tal transverse series like the second, the cells often slightly more 

 numerous, forming projections in a similar fashion on either side 

 which bear the same bladder-like appendages. The axial cell of the 

 terminal series is followed by two small cells, each bearing a short 

 appendage, on either side of which a large somewhat flattened ?ell 

 forms the base of the perithecium. Perithecia two, more or less 

 divergent, elongate, slightly inflated and tapering gradually to the 

 blunt apex. Perithecia 110-165 X 22-30 fx. Spores 38 X 4 //. Re- 

 ceptacle 150-180 X 70-75 jx. 



On PhilontJms sordidus Grav. Massachusetts. 



A conspicuous species, occurring on all parts of the host, but espe- 

 cially on the inferior surface of the abdomen. 



