PLATE 6. 



Fig. 1. (?) Thysanopoda cornuta Illig. Young. 



Fig. la. Anterior part of the single young specimen, 14.5 mm. long, from above; X 15. 

 Fig. lb. Pedvmcle of right antennula, from above; X 31. 



Fig. Ic. Left maxiUula, from below; X 34. 1. first joint; 1'. lobe from first joint; 2. second 

 joint; 3. third joint; P. lobe of third joint; 4. fourth joint or palp; ex. cxopod. 

 Fig. Id. Left maxilla, from below; X 34. 1. first joint; ex. exopod. 

 Fig. le. Posterior part of abdomen, from above; X ^. 



Fig. 2. Nyctiphanes simplex H. J. Hansen. 



Anterior part of an adult male, from above; X 16. 

 Left antennula of a male, from the outer side; X 27. 

 Right antennula of a male, from above; X 26. 

 Left antennula of an adult female, from the outer side; X 28. 

 Right antennula of an adult female, from above; X 27. 

 Left antennula of an immature specimen, from the outer side; X 28. 

 Left maxiUula of a female, from below; X 68. 

 Left copulatory organ, vmrolled and seen from behind; X 80. 

 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 



li. inner lobe; Im. median 



Fig. 3. Nyctiphanes australis G. O. Sars. 



Left antennula of the adult male, from the outer side; X 22. 



Right antennula of the same male, from above; X 22. 



Left antennula of the adult female, from the outer side; X 27. 



Right antennula of the same female, from above; X 24. 



Left copulatory organ, unrolled and seen from behind; X 58. 



Im. median lobe; p'. 



