50) 
De NEW POSsie. SPONGE PROM TEE COAL 
MEASURES—(With Plate 4). 
H. HERZER. 
Sphenodictya cornigera, a new genus. 
This sponge begins with an obtuse, compressed cup, 
spreading gradually at an angle of 35 degrees and pursuing 
this compressed and widening plan with a gradual thick- 
ening to an inch at its:length of 34 inches. It is perfectly 
wedge-shaped, its margins are obtusely rounded and the 
right margin bears a ridge-like swelling from base to top. 
The body is marked with very faint linear longitudinal 
striae; a heavy cornice more than one-half inch thick 
overtops the structure, projecting at its left end a cornicle 
Sphenodictya cornigera. 
