PLATE 7. 
Fig. 1. Nyctiphanes simplex H. J. Hansen. Young. 
Fig. la. Anterior part of a young specimen measuring 7 mm. in length, from above; X 33. The 
setae of left antennula omitted. 
Fig. 1b. Left antennula of the specimen shown in the preceding figure, from the outer side; X 48. 
Fig. 2. Euphausia eximia H. J. Hansen. a 
Fig. 2a. Anterior part of the body of an adult male, from above; x 14. The setae on left an- 
tennula omitted. 
Fig. 2b. Peduncle of left antennula of an adult male, from the outer side; x 25. 
Fig. 2c. Major part of the peduncle of right antennula of a male, from above; X 25. ; 
Fig. 2d. Distal part of second joint of the peduncle of right antennula of another specimen, a 
female, from above; X 27. " 
Fig. 2e. Left copulatory organ, unrolled and seen from behind; x 47. p®*. terminal process; p 
proximal process; p*. lateral process. 
Fig. 2f. Inner lobe of left copulatory organ of another specimen, from the inner side; X 50. 
Lettering as in fig. 2e. 
Fig. 2g. Median lobe of left copulatory organ of a large specimen, from the inner side; X 42. ph 
lateral process. 
‘ 
Fig. 3. Euphausia recurva H. J. Hansen. 
Fig. 3a. Anterior part of the body of an adult male, from above; X 23. The setae on left a 
tennula omitted. 
Fig. 3b. Left antennular peduncle of an adult male, from the left; x 39. 
Fig. 3c. Major part of the peduncle of right antennula of an adult male, from above; X 36. j 
Fig. 3d. Left antennular peduncle of an adult female from Lat. 34° 50’ S., long. 25° 30’ E., from 
the outer side; X 25. 
Fig. 3e. Major part of the peduncle of right antennula of the adult female from Lat. 34° 50’ 8. 
long. 25° 30’ E., from above; X 22. 
Fig. 3f. Left copulatory organ, unrolled and seen from behind; X 77. . 
Fig. 3g. Distal part of the terminal process of the organ shown in fig. 3f, from behind; X 140. 
Fig. 3h. Terminal process of left organ of another male, from the inner side; X 130. 
Fig. 3i. Terminal part of the proximal process of the organ shown in fig. 3f, from behind; X 150. 
Fig. 3k. Terminal part of the proximal process of the left organ of another male from Sta. 4576, 
from behind; x 150. 
Fig. 31. Proximal process of left copulatory organ of a male from Lat. 34° 50’ S., long. 25° 30’ E., 
from behind; > 80. Bs 
Fig. 3m. Terminal part of the proximal process shown in fig. 31, from behind; X 150. " 
Fig. 3n. Terminal part of the proximal process of left copulatory organ of another male from Lat. 
34° 50’ S., long. 25° 30’ E., from behind; x 150. £ 
» 
Fig. 4. Euphausia diomedeae Ortmann. 
a 
Fig. 4a. Anterior part of the body of a male from Sta. 4721, having the rostral plate strong) ly 
expanded and the rostrum short; from above; X 15. i 
Fig. 5. Euphausia pacifica H. J. HANnsEN. 
Fig. 5a. Anterior part of a slightly more than half-grown specimen, from above; X 19. 
Fig. 5b. Terminal part of the proximal joint with the basal part of second joint of right antenn ular 
peduncle of the specimen shown in fig. 5a, from above; X 50. 
Fi 
= 
ig 
‘2 
