LIST OF ILLUSTRATIONS. 
Plate 
No. 
1. (Fig. 1) The Belfast Lobster; dorsal view of Male Lobster; living weight a little over 23 pounds 
2. (Fig. 2) Ventral view of large Lobster shown in Plate 1. (Fig. 3) Ventral view of small Lobster for comparison 
with Fig. 1. Egg-bearing Female 
3. (Fig. 4) Profile view of living Red Lobster; Female 
4. (Fig. 5) Adult Male Lobster; dorsal view 
5. (Fig. 6) Adult Male ; ventral view of Lobster shown in Plate 4 
6. (Fig. 7) Adult Female Lobster with external Eggs; dorsal view 
7. (Fig. 8) Adult Female; ventral view of Lobster shown in Plate fi 
8. (Fig. 9) Immature Female Lobster; dorsal view. (Fig. 10) Immature Male Lobster. (Fig. 11) Immature Female 
Lobster. (Fig. 12) Immature Male Lobster 
9. (Fig. 13) Immature Female Lobster. (Fig. 14) Immature Male Lobster 
10. (Fig. 15) Immature Female Lobster ; dorsal view 
11. (Fig. 16) Ventral view of immature Female Lobster shown in Plate 10 
12. (Fig. 17) Immature Male, Lobster 
13. (Fig. 18) Immature Male Lobster 
14. (Fig. 19) Male Lobster, showing abnormal symmetrical development in large Claws 
15. (Fig. 20) Right crushing-claw of Lobster, probably a Male ■ estimated weight about 25 pounds. (Fig. 20a) Right 
crusliing-claw of Female Lobster of about average size 
16. (Fig. 21) Red Female Lobster, colored from life. (Fig. 22) Adult Male Lobster, colored from life 
17. (Fig. 23) Eggs of Lobster, showing an unusual color variation. (Fig. 24) Cluster of fresh Eggs of Lobster, colored 
from life. (Fig. 25) Cluster of Egg Embryos from swimmerets of Female, shown in Plate 7. (Fig. 26) 
Profile view of Embryo released from eggshell. (Fig. 27) Side view of Embryo, as seen through the 
transparent Shell. (Fig. 28) Dorsal view of Embryo, shown in Fig. 27 
18. (Fig. 29) Lobster Hatching. (Fig. 30) Lateral view of a Lobster teased from an Egg about to Hatch. (Fig. 31) 
Profile view of Lobster in Fifth Stage 
19. (Fig. 32) First swimming stage of the Lobster 
20. (Fig. 33) Profile view of the first Larva of the Lobster 
21. (Fig. 34) Second Larva; profile view 
22. (Fig. 35) Third Larva; lateral view 
23. (Fig. 36) Fourth Larva; dorsal view 
24. (Fig. 37) Sixth stage; dorsal view 
25. (Fig. 38) Young Lobster in sixth stage; profile view 
26. (Fig. 39) Young, immature Lobster; Male 
27. (Fig. 40) Right first antenna of first Larva, from below. (Fig. 41) Left first antenna of second Larva, from below. 
(Fig. 42) Left first antenna, of third Larva, from below. (Fig. 43) Left first antenna of fourth Larva, from 
above. (Fig. 44) Left first antenna of fifth stage, from below. (Fig. 45) Right first and second antenna- 
of first Larva, from above. (Fig. 46) Right second antenna of second Larva, from above. (Fig. 47) Left 
second antenna of third Larva, from above. (Fig. 48) Left second antenna of fourth Larva, from below. 
(Fig. 49) Proximal portion of left first and second antenme of Lobster in fifth stage, seen from below- 
28. (Fig. 50) Left first and second antenme of fifth Larva, as seen from above. (Fig. 51) Right first maxilla of first 
Larva, from anterior face. (Fig. 52) Terminal joint of left fifth pereiopod of first Larva, from anterior 
side. (Fig. 53) Tip of endopodite of first maxilla of first Larva. (Fig. 54) Front view of mouth and sur- 
rounding parts of first Larva. (Fig. 55) Right mandible of fourth Larva, from behind, showing groove 
and cutting edge. (Fig. 56) Left mandible of fourth Larva, from outer side. (Fig. 57) Mandibles of fourth 
Larva, from anterior side 
29. (Fig. 58) Left first maxilliped of first Larva, from the inner side. (Fig. 59) Left first maxilliped of fourth Larva, 
from outer side. (Fig. 60) Right second maxilla of first, Larva, from outer side. (Fig. 61) Right first 
maxilla of fourth Larva, from inner side. (Fig. 62) Right first maxilla of fifth Larva, from outer side 
30. (Fig. 03) Left second maxilliped of first Larva, from anterior face. (Fig. 64) Left second maxilliped of fourth 
Larva, from anterior face. (Fig. 65) Right third maxilliped of fourth Larva, from dorsal surface, natural 
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VII 
