34 G. O. Sars. 
Explanation of the Plates. 
ET: 
Apus australiensis, Spencer & Hall. 
Fig. 1. Young (male?) specimen, drawn from life, and 
viewed from above; magnified about 9 diameters. 
» la. Same, natural size. 
» 2. Leg of Ist pair; magnified 19 diameters. 
» 8. Leg of 2nd pair. 
» 4. Leg of 11th pair. 
» 5. Extremity of tail with bases of the caudal fila- 
ments; dorsal view. 
» 6. Left dorsal sensory knob of the terminal segment; 
highly magnified. 
Pl 
| Estheria elliptica, G. O. Sars. 
Fig. 1. Shell of adult female, viewed from left side: 
magnified about 16 diameters. 
» 2. Same, dorsal view. 
» 8. Part of left valve, more highly magnified, to show 
the peculiar sculpturing of the shell. 
» 4. Right valve with enclosed animal (the left valve 
being removed), lateral aspect; magnified 22 dia- 
meters. 
» 5. Tail with adjoining part of trunk, seen from left 
side; magnified 52 diameters. " 
