Fig. 36. 
Fig. 37. 
Fig. 38. 
Fig. 39. 
SEA-FISHERIES LABORATORY. 261 
Transverse section through the tip of a siphonal 
tentacle passing through an ‘‘eye.” Zeiss 
apo. 1°5 mm., compens. oc. 4. 
A group of secreting alveoli from the nearly ripe 
ovary.  X 25 diam. 
Transverse section through two contiguous 
alveoh from a nearly ripe ovary, showing the 
germinal epithelium and the eggs lying freely 
in the lumina of the alveoli. x 90 diam. 
Transverse section through three alveoli from a 
nearly ripe testis. X 90 diam. 
