THE AMERICAN LOBSTER. 
239 
Plate 8. 
Fig. 9. Immature female lobster, dorsal view; length 44 mm. (1.73 inches). From photograph, life- 
size. Caseo Bay, Maine, October, 1893. See table 32, No. 2, for further details. 
This and the immature or adolescent lobsters represented by plates 8-13, figs. 9-18, were collected 
in Casco Bay, Maine, in Small Point Harbor and vicinity, from August 31 to October 19,1893. 
The photographs were all made from the alcoholic specimens. They are described in table 
32, pp. 163-165. All are life-size. 
Fig. 10. Immature male lobster ; length 40.3 mm. (1.59 inches). See No. 1, table 32. The right cutting- 
claw is smaller than is normal, due to the fact that it has been recently cast off and is 
now only partially restored. (See Chapter IV.) 
Fig. 11. Immature female lobster; length 64 mm. (2.5 inches). No. 7, table 32. 
Fig. 12. Immature male lobster; length 58 mm. (2.28 inches). No. 5, table 32. 
Plate 9. 
Fig. 13. Immature female lobster ; length 75.6 mm. (2.98 inches). No. 16, table 32. The right cutting- 
claw is smaller than normal. See fig. 10, pi. 8, with description given above. From 
photograph ; life-size. 
Fig. 14. Immature male lobster; length 67 mm. (2.64 inches). No. 8, table 32. From photograph; 
life-size. 
Plate 10. 
Fig. 15. Immature female lobster ; dorsal view; length 86.5 mm. (3.41 inches), 
photograph; life-size. 
Plate 11. 
No. 21, table 32. 
From 
Fig. 16. Ventral view of immature female lobster shown in plate 10. Length 86.5 mm. (3.41 inches). 
No. 21, table 32. From photograph; life-size. The seminal receptacle is seen between the 
third pair of walking legs. The normal rudimentary condition of the first pair of swim- 
merets is also well shown. Compare with plate 7. 
Plate 12. 
Fig. 17. Immature male lobster; length 92.3 mm. (3.64 inches), 
life-size. 
Plate 13. 
No. 23, table 32. 
From photograph; 
Fig. 18. Immature male lobster ; length 110 mm. (4.34 inches), 
life-size. 
Plate 14. 
No. 32, table 32. 
From photograph; 
Fig. 19. Male lobster showing abnormal, symmetrical development in large claws. Instead of the 
usual differentiation of the great claws, one for crushing, the other for cutting (well 
shown in fig. 6, pi. 5), both are here similar and belong to the cutting type. Length 10 
inches ; taken at Woods Hole, Massachusetts. See p. 144. From photograph from alcoholic 
specimen ; about four-fifths life size. 
Plate 15. 
Fig. 20. Right crushing-claw of lobster, probably a male, preserved in the museum of the Peabody 
Academy of Science, Salem, Massachusetts : Estimated weight of live lobster, about 25 
pounds; weight of skeleton of claw (including the fifth joint or carpus), the parts shown 
in the drawing, 16f ounces. Natural size. 
Fig. 20a. Right crushing-claw of female lobster, of about average size; length 11 inches; weight Im- 
pounds; shell fairly hard. Captured at Woods Hole, Massachusetts, July 24, 1894. Natural 
size. 
This drawing of the claw of a lobster of average size, placed by the side of the mammoth speci- 
men for the sake of comparison, shows more forcibly than words or figures can the great 
difference in size which may exist between adults of the same species. Both drawings 
are life-size, and to insure accuracy their outlines were carefully traced from the objects 
themselves. The living weight of the smaller claw (including tho entire limb) was about 
10 ounces, that of the larger about 10 pounds. (See p. 115.) 
