654 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 49. 



EXPLANATION OF PLATE 83. 

 Euphausia fallax. 



Fig. la. Male copulatory organ of first left pleopod, unrolled and seen from behind; 



X42. 

 16. Inner and median lobes of the organ shown in fig. In, from behind; X 64. 



p2, terminal process; p^, proximal process; p*, lateral process. 

 Ic. Inner and median lobes of the same organ, from the inner side; X64. The 



lettering as in fig. lb. 

 Id. Distal part of the terminal (p^) and the proximal process (p^) of the same organ, 



from the inner side; X 100. 



Nematoscelis lobata. 



Fig. 2a. Anterior part of carapace, eyes, and the proximal half of the antennular 



peduncles of an adult female, from above; X 13. 

 26. Anterior part of carapace, eyes, and the proximal half of the antennular 



peduncles of an adult male, from above; X 13. 

 2c. Male copulatoiy organ of first left pleopod, unrolled and seen from behind; 



X64. Zm, median lobe. 

 2d. Inner lobe and proximal inner part of the median lobe of the organ shown in 



fig. 2c, from behind; X 105. p', spine-shaped process; p^, terminal process; 



p'\ proximal process; p'*, lateral process. 

 2c. Inner lobe of another organ; X 105. 

 2/ Inner and median {Im) lobe of a third organ, from in front; X 106. 



I 



