PLATE 6. 
Fig. 1. (?) Thysanopoda cornuta Ituic. Young. 
Fig. la. Anterior part of the single young specimen, 14.5 mm. long, from above; X 15. 
Fig. 1b. Peduncle of right antennula, from above; X 31. “ 
Fig. 1c. Left maxillula, from below; X 34. 1. first joint; l'. lobe from first joint; 2. seco 
joint; 3. third joint; }*. lobe of third joint; 4. fourth joint or palp; ex. exopod. ; 
Fig. 1d. Left maxilla, from below; X 34. 1. first joint; ex. exopod. 
Fig. le. Posterior part of abdomen, from above; X 7. 
Fig. 2. Nyctiphanes simplex H. J. Hansen. 
Fig. 2a. Anterior part of an adult male, from above; X 16. 
Fig. 2b. Left antennula of a male, from the outer side; X 27. 
Fig. 2c. Right antennula of a male, from above; X 26. 
Fig. 2d. Left antennula of an adult female, from the outer side; X 28. 
Fig. 2e. Right antennula of an adult female, from above; X 27. 
Fig. 2f. Left antennula of an immature specimen, from the outer side; 28. 
Fig. 2g. Left maxillula of a female, from below; X 58. : 
Fig. 2h. Left copulatory organ, unrolled and seen from behind; X 80. li. inner lobe; Im. mediai 
lobe; p'. spine-shaped process; p*. lateral process. 
Fig. 2i. Major distal part of the inner lobe of the same organ, from behind; X 143. 
Fig. 3. Nyctiphanes australis G. O. Sars. 
Fig. 3a. Left antennula of the adult male, from the outer side; X 22. 
Fig. 3b. Right antennula of the same male, from above; X 22. 
Fig. 3c. Left antennula of the adult female, from the outer side; X 27. 
Fig. 3d. Right antennula of the same female, from above; X 24. 
Fig. 3e. Left copulatory organ, unrolled and seen from behind; X 58. Im, median lobe; 
lateral process, 
