PLATE 12. 



Larval Stages of Euphausiacea. 

 Fig. I. Thysanopoda sp. (T. monacantha Ortmann. aff.). 



Fig. la. First Furciliia-stage; length .3.7 mm. The animal, from the left; X 21. mxp. maxilliped. 



Fig. lb. Anterior part of the same larva, from above; X 37. Setae and antenna on the right 

 side omitted. 



Fig. Ic. Posterior part of abdomen with right uropod of the same larva, from above; X 30. 



Fig. Id. Posterior part of telson of the same larva, from above; X 80. 



Fig. le. Last Furcilia-stage; length 5.0 mm. The animal, from the left side; X 21. mxp. 

 maxiUiped. 



Fig. If. Anterior part of the specimen shown in fig. le, from above; X 28. The distal part of 

 left antennula, right antenna, and most setae omitted. 



Fig. Ig. Distal part of telson of the specimen shown in fig. le, from above; X 87. 



Fig. 2. Euphausia distinguenda H. J. Hansen. 



Fig. 2a. Anterior half of a larva in the last Furciha-stage; from the left; X 35. The animal is 

 2.8 mm. long. 



Fig. 2b. Anterior part of the same specimen, from above; X 49. The setae on right antennula 

 omitted. 



Fig. 2c. Distal part of telson of the same specimen, from above; X 82. 



Fig. 3. Nyctiphanes simplex H. J. Hansen. 



Fig. 3a. Cephalothorax and the tlu-eo anterior abdominal segments of a larva in the intermediate 

 Furcilia-stage, from the left; X 26. mxp. maxilliped. The animal is 3.2 mm. long. 



Fig. 3b. Anterior part of the same specimen, from above; X 30. 



Fig. 3c. Posterior part of abdomen of the same specimen, from above; X 30. Right uropod 

 omitted. 



Fig. 3d. Distal part of telson of the same specimen, from above; X 83. 



Fig. 3e. Posterior part of abdomen with left uropod of a larva in last Furcilia-stage, from above; 

 X 29. The animal is 3.7 mm. long. 



Fig. 3f. Distal part of the telson shown in fig. 3e, from above; X 83. 



Fig. 4. Pseudeuphausia latifrons G. O. Sars. 



Fig. 4a. Anterior part of a larva in a Cyrtopia-stage, from above; X 32 The animal is 3.2 mm. 

 long. 



Fig. 4b. Posterior part of abdomen with right urojiod of the same larva, from above; X 32. 



Fig. 5. Nematoscelis microps G. O. Sars. 



Fig. 5a. Larva in the first Cyrtopia-stage, from the right; X 25. The anim.al is 3.5 mm. long. 

 Fig. 5b. Head with eyes and antennulae of the same specimen, from above; X 39. 

 Fig. 5c. End of telson of the same specimen, from above; X 93. 



Fig. 6. Stylocheiron carinatum G. O. Sars. 



Fig. 6a. Larva in the intermediate Furciha-stage, from the right; X 30. The animal is 2.8 mm. 

 (On possible inaccuracies in the figure see page 293). 



Fig. 6b. Head with eyes and antennulae of the same specimen, from above; X 46. The setae 

 omitted. 



Fig. 6c. Posterior part of telson of the same specimen, from above; X 140. 



Fig. 6d. Cephalothorax and first abdominal segment of a larva in the last Furciha-stage, from the 



right; X 30. The animal is 3 mm. long. 



