506 FOOT. 
EXPLANATION OF PLATE XXXVIII. 
Fic. 1. Anterior segments of two copulating worms, slime-tube encircling the 
pair from the 8th to the 33d segments. X 3%. Seminal fluid between the two 
worms coagulated by the reagents. At the distal ends of the tube an aggregation 
of spermatophores. 
Fic. 2. Slime-tube containing seminal fluid and spermatophores. Preserved 
after the copulating worms have been disturbed and allowed to withdraw. X 3%. 
Fic. 3. Freshly deposited cocoon, surrounded by one-half of a slime-tube. 
xe: 
Fic. 4. Older cocoon, probably containing eggs in the pronuclear stages. 
Fic. 5. Section of an unfertilized egg, from a freshly deposited cocoon. 
X about 687. 
