PLATE 11. 
Fig. 1. Nematobrachion sexspinosus H. J. Hansen. 
Fig. la. -Anterior part of the body of a male, from the left side; X 73. 
Fig. 1b. Left antennular peduncle of the same male, from the outer side; X 13. 
Fig. 1c. Distal part of second peduncular joint with the basal part of third joint of left antennula 
of the same male, from above; X 20. ; 
Fig. 1d. Left maxilla of a male, from below; X 25. 
Fig. le. The four posterior abdominal segments of a male, from the left side; x $. 
Fig. lf. Major part of the same segments as shown in fig. le, from above; X 7. 
Fig. lg. The inner, the median, and the auxiliary lobes of left copulatory organ, unrolled and seen 
from behind; xX 40. 
Fig. 1h. Inner lobe with its processes of the same copulatory organ, from behind;  X 78. 
Fig. li. Distal half of the terminal process of the same organ, seen from the outer side; X 80. 
Fig. 2. Stylocheiron carinatum G. O. Sars. 
Fig. 2a. Left maxillula of a female, from below; X 58. 
Fig. 2b. Left maxilla of the same female, from below; X 48. 
Fig. 3. Stylocheiron suhmii G. O. Sars. 
Fig. 3a. Left eye with stalk of a male, seen with the light transmitted and the lower half somewhat 
diagrammatic, from the outer side; X 46. 
Fig. 3b. Sixth abdominal segment of a male, from the outer side; X 46. 
Fig. 4. Stylocheiron longicorne G. O. Sars. 
Fig. 4a. Left maxillula of a female, from below; X 42. 
Fig. 4b. Left maxilla of the same female, from below; X 42. 
Fig. 5. Stylocheiron abbreviatum G. O. Sars. 
Fig. 5a. Anterior part of an adult male (from Sta. 4734), from the left side; X scarcely 9. a?. 
last peduncular joint of the endopod of the left antenna; 1°. second left thoracic leg—the distal half 
with the chela omitted; mxp. left maxilliped. 
Fig. 5b. Third peduncular joint with both flagella of left antennula of the same male, from the 
outer side; x 15. 
Fig. 5c. Third peduncular joint with the whole upper flagellum and the major part of the lower 
flagellum of the male left antennula shown in fig. a, from above; X 15. 
Fig. 5d. Left maxillula of a female from below; X 38. s. the distal spine on the end of the palp 
more highly magnified, viz. > 128. 
Fig. 5e. Left maxilla of the same female, from below; X 38. 
Fig. 5f. The inner and the median lobes of left copulatory organ, unrolled and seen from behind; 
> 185. p!. spine-shaped process; p*. terminal process; p*. proximal process; p*‘. lateral process. 
