MUSEUM OF COMPARATIVE ZOOLOGY, 103 
EXPLANATION OF THE PLATES. 
PLATE I. 
Cirolana polita Harger ex Stimpson. Lateral view of female, enlarged 
three diameters. 
. Antennula of another specimen, enlarged twelve diameters. 
. Antenna of same, enlarged twelve diameters. 
. Lateral view of pleon of C. polita as in fig. 4, enlarged five diameters. 
Cirolana spinipes Bate & Westwood. Lateral view of female, enlarged 
three diameters. 
. Antennula of another specimen, enlarged ten diameters. 
. Antenna of same, enlarged ten diameters. 
. Pleon of C. spinipes as in fig. 4, enlarged five diameters. 
. Pleopod of the second pair of C. spinipes, male, enlarged eight diameters. 
Cirolana impressa Harger. Lateral view of female, enlarged three diam- 
eters. 
. Antennula of another specimen, enlarged twelve diameters. 
. Antenna of same specimen, enlarged twelve diameters. 
. Pleon of C. impressa as in fig. 4, enlarged five diameters. 
. Pleopod of the second pair of C.impressa, male, enlarged eight diameters. 
Pleon of Cirolana concharum Harger ex Stimpson, showing the first five 
segments in a lateral view, with dotted outline of last thoracic seg- 
ment and its epimeron, enlarged five diameters. 
PLATE II. 
Cirolana spinipes Bate & Westwood. Last segment of pleon with uro- 
pods, enlarged six diameters. 
. Leg of the first pair, enlarged eight diameters. 
. Leg of the fourth pair, enlarged six diameters. 
. Leg of the seventh pair, enlarged six diameters. 
Cirolana polita Harger ex Stimpson. Last segment of pleon with uro- 
pods, enlarged six diameters. 
. Leg of the first pair, enlarged eight diameters. 
. Leg of the fourth pair, enlarged eight diameters. 
Cirolana impressa Harger. Last segment of pleon with uropods, enlarged 
six diameters. 
