HOMOLOGY OF THE RECENT PHYLLOCARIDA. 



In the following pages I propose to discus, more in detail the homologies of the 

 several r L the NebaliidJ, as compared with those in other recent Crns aeea As 

 ZZl indicated at the beginning ef this Report my view as to the reWao^np ot 

 the .enns Nebdia to other known Crustaeea somewhat differe from that set forth by 

 most other naturalists, and the examination ef the two related new generic types pre- 

 Tred IV the Challenger Expedition, aad described above, has confirmed me s ill mere m 

 theopinion at first adopted from a thorough investigation of our common northern form, 



" eS^hing that the great resemblanee of N**a to certain Copcpoda, 



Fig. %—Diosaccus tenuicornis (Clans), mare. 



^ escaped the attention of most naturalists ^ZlXo^^Z 



examination, whereas the much more remote affinity to the n J 



been dwelt upon, and even Professor Clans to whom w are a* *w ed hn 



for an admirable work on the free living Copepoda doe not seem to ^ 



„f this unmistakable resemblance ; I think it may be readily toun y 



parison, that the afflmty of SMb to the Copepoda is "*£■£££ the sevcral 



Podophthalmia, both as regards the external appeurance and the struct. 



appendages. In some other important points it exhibi Ma * * »£ n , 



.agreement with the Phyllopoda, and for that reason it ought to be, y 



