CRU8TACBA MALACOSTRACA. HI. jfc, 



Fig. 4 c. Head and first thoracic segment - most of its legs omitted - - of the male, from below ; 



x8s 



.pi Right antennula of the head shown in fig. .} r, from below; x 195. 

 4e. Fifth left leg of the male, from in front; x 125. 

 4! Distal part of sixth right leg of the male, from behind; x 125. 

 4g. Seventh right leg of the male, from in front; x 125. 



Fig. 5. Cumoffhus insignis n. gen., n. sp. 



Fig. 58, Female from Diastylis polaris G. O. Sars (the "Ingolf" StaL 138), from below; x 12. tr*. se- 

 cond pair of thoracic legs; ab, abdominal area. 



5 b. Anterior right part of an emptied skin of a female from Diastylis echinala Hate, from below ; 

 x 28. a', antennulx; /". apparently unpaired lamella; /'. lamella, |x>ssibly the empty skin of 

 the antenna; A. lamella projecting a little more backwards and partly overlapped, probably 

 first marsupial lamella; tr'. first thoracic leg; If. second thoracic leg. 



5C. Male from Diastylis polaris (the "Ingolf StaL 113), from above; x 46. 



5<1. Head and first thoracic segment - - most of its legs omitted - of the male from /'.///- 

 nata, from below; x 133. 



51- Right anteunula of the head shown in fig. 5 <1. from below; x 133. Most of the long setse 

 totally omitted (comp. fig. 5<li. 



5t Third left thoracic leg of the male from D.echinata. from in front; x i2a 



5g. Sixth left leg of the same male, from in front; x 120. 



5 h. Seventh left leg of the same male, from in front; x 120. 



5 i. Posterior part of fifth abdominal segment, sixth segment and uropods of the male from D. 

 polarts, from above; x 130. The terminal setae on the rami of the uropods nearly or totally 

 omitted. 



S k. Larva in first stage taken within the skin of a female from /). rchinala, from below; x 146. 

 Thoracic legs and plcopods omitted on the right half of the figure. 



Fig. 6. Gnathia robust a G. O. Sars. 



Fig. 6 a. Left mandible of a male from LaL 7o32' N., from the outer side; x 22. 

 6b. Outline of the head, with the proximal joints of left antennula and antenna, of a female 

 from Lat 6o, 25' N., from above; x 21. 



Fig. 7. Gnathia hirsute G. O. Sars. 

 Fig. 7 a. Head of a male from the "Ingolf" StaL 25, from above; x n. 



7 b. Posterior part of abdomen with left uropod of the same male, from above; x 27. 



Fig. 8. Gnathia abyisorum G. O. Sars. 

 Fig. 8 a. Anterior part of the head with mandibles and the proximal joints of the antcnnulse of 



male from LaL 64 N., from above; x 25. 

 8b. Front part of the lower side of the head of the same male, from below; x 25. 



