Fig. 
~~ 
6. 
10. 
le 
118 
Transverse section of pore-canal at the base 
of the mouth. x 590. 
Prate IIT. 
Le peo phtheirus pectoralis. 
Female, ventral view, showing the nervous 
system in setu. x 17. 
The nervous system from the ventral aspect. 
Female, nearly median longitudinal section. 
x UT. 
One of the antennules, showing the nerve 
endings. x 76. 
Median longitudinal section of the ganglha, 
showing the “pinhole” cesophagus passing 
through between the supra and sub-cesophageal 
parts. x 77. 
Transverse section in the region of the eyes. 
x 38. 
Transverse section in the region of the supra- 
and sub-cesophageal ganglia. x 39. 
Transverse section in the region of the second 
maxillipedes. x 30. 
Transverse section through the genital segment, 
female. x 30. 
Transverse section through the genital segment, 
male. x 38. 
Part of a transverse section of the intestine. 
x 76. 
Horizontal section of the dorsal aspect of the 
supra-cesophageal ganglion, showing the cross- 
ing of the fibres of the optic nerves. x 152. 
Transverse section of the eyes. x 152. 
