PLATE 8. 
Fig. 1. Euphausia brevis H. J. Hansen. 
Fig. la. Anterior part of the body of a male, from above; X 32. 
Fig. 1b. Left antennular peduncle of a male, from the outer side; X 47. 2 
Fig. le. Major part of right antennular peduncle of a male, showing the terminal part of first 
joint with its lobe, and the whole second joint, from above; X 47. 
Fig. 1d. Left copulatory organ, unrolled and seen from behind; X 87. 
Fig. le. Proximal process of the organ shown in the preceding figure, from behind; X 150. 
Fig. 1f. Inner lobe of left copulatory organ of another male, seen from the inner side; X 141. 
Fig. lg. Distal part of thé terminal process of the lobe exhibited in fig. 1f, seen from the inner 
side and a little from in front; x 141. 
Fig. 2. Euphausia gibba G. O. Sars. 
Fig. 2a. Left antennular peduncle of a male, from the outer side; X 25. 
Fig. 2b. Left copulatory organ, unrolled and seen from behind; X 52. p*. terminal process; p*. 
proximal process; p‘. lateral process; lm. median lobe, with its finger-like distal part. 
Fig. 3. Euphausia distinguenda H. J. Hansen. 
Fig. 3a. Anterior part of the body of a male, from above; X 20. The setae on left antennula 
omitted. 
Fig. 3b. Anterior part of the body of a male, from the left side; X 17. 
Fig. 3c. Left antennular peduncle of the same male, from the left side; X 35. p. ear-like process 
at the distal outer upper angle of second joint. 
Fig. 3d. Major part of right antennular peduncle of a male, showing the distal part of first joint 
and the whole second joint, from above; X 35. p. ear-like process at the distal outer upper angle of 
second joint. 
Fig. 3e. Left copulatory organ, unrolled and seen from behind; X 77. 
Fig. 3f. Proximal process, p*., and median lobe with the lateral process; p*‘., of left copulatory 
organ of another specimen, seen from the inner side; X 90. 
Fig. 4. Euphausia lamelligera H. J. Hansen. 
Fig. 4a. Anterior part of the body of a male, from above; X 23. 1. movable lamella from second 
joint. 
Fig. 4b. Anterior part of the body of a male, from the left side; X 18. 
Fig. 4c. Left antennular peduncle of a male, from the outer side; X 38. 
Fig. 4d. Right antennular peduncle of a male, from above; X 36. 1. movable lamella from the 
end of second joint. The setae omitted. . 
Fig. 4e. Inner and median lobes of left copulatory organ, seen from the inner side; X 84. p*. 
terminal process; p*. proximal process; p*‘. lateral process. 
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