PLATE XX 
Fig. 1—7. Balanus compressus n. sp. 
Fig. 
ga ga aq ga Wa vO 9a’ UO 
ts 
aia 
AY Bw wp 
7: 
a and 4, scutum and tergum, internal view; magnified 8 diameters. 
c and d, scutum and tergum, external view; magnified 10 diameters. 
Labrum; magnified 64 diameters. 
Mandible; magnified 144 diameters. 
Edge of mandible of the other side; magnified 144 diameters. 
Edge of maxilla, with spines; magnified 206,5 diameters. 
Maxillae; magnified 44,5 diameters. 
Third cirrus, 5th segment; magnified 144 diameters. 
Sixth cirrus, one of the middle segments; magnified 44,5 diameters. 
Balanus longirostrum n. sp. 
8. 
Q. 
10. 
Il. 
12. 
132 
Tee 
14. 
I5. 
Wis 
16. 
Animal, lateral view; magnified 10 diameters. 
Rostrum, external view; magnified 10 diameters. 
a and 4, scutum and tergum, internal view; magnified 13 diameters. 
c and d, scutum and tergum, external view; magnified 13 diameters. 
Labrum, with right-hand palpus; magnified 64 diameters. 
Mandible; magnified 64 diameters. 
Maxilla; magnified 64 diameters. 
Maxilla, edge with spines; magnified 206,5 diameters. 
Outer maxillae; magnified 64 diameters. 
Fourth cirrus, lower part; magnified 64 diameters. 
Same cirrus, segments of pedicel and 3 segments of cirrus; magnified 144 diameters. 
Sixth cirrus, 16th segment; magnified 64 diameters. 
Balanus terebratus Darwin. 
17 
18. 
ic. 18%. 
19. 
20. 
21. 
Group of specimens; magnified 10 diameters. 
a and 6, scutum and tergum, internal view; magnified 10 diameters. 
c and d, scutum and tergum, external view; magnified 10 diameters. 
Tergum, internal view; magnified 30 diameters. 
Mandible; magnified 144 diameters. 
Fourth cirrus, 4th segment; magnified 206,5 diameters. 
Sixth cirrus, one of the middle segments; magnified 144 diameters. 
