COPEPODA. 257 



Other organs similar to those of S. pagm%, with the exception of the inner 

 branch of the 4th natatory legs, which in this sjsecies is 2-jointed (rig. 16). Caudal 

 segments short, their length not much exceeding the width ; the anterior inner 

 corner of each is marked off by a dividing line. One specimen only was found in the 

 general washings of Ceylon Invertebrates. 



The form of the furcal rami is sufHcientlv diagnostic to distinguish this from 

 other species of the genus. The fact that this species has the inner branch of the 

 fourth pair of legs only 2-jointed may, sometime, necessitate its removal to a new 

 genus. 



Longipedia coronata, Claus. 



Occurred at 2 stations in the Mediterranean and once in the Siiez Canal. Usually 

 a littoral species. Found also in washings from Sponges, Gulf of Manaar. 



Longipedia minor, T. Scott. 

 A few specimens of this form were obtained in the tow-net off Marichchukaddy. 



Canuella perplexa, T. and A. Scott. 

 One specimen was taken between Port Said and Suez. 



Ectinosoma atlanticum (Brady and Robertson). 



The most abundant species throughout the collection. Occurred at 6G stations, from 

 the Mediterranean throughout the Red Sea and Indian Ocean and all around Ceylon. 



Ectinosoma roseum, Dana. 

 Hardly less common than E. atlanticum. Fifty-nine stations, similarly distributed. 



Ectinosoma normani, T. and A. Scott. 



Ectinosoma propinquum, T. and A. Scott. 



Both species found in washings from young pearl oysters and in the general 

 washings from Ceylon Invertebrates. 



Setella gracilis, Dana. 

 Occurred at 44 stations fairly continuously, from the Mediterranean to Ceylon. 



Miracia efferata, Dana. 



Was obtained in the Indian Ocean, twice off Minikoi, and between the Maldives 

 and the Gulf of Manaar. 



Miracia minor, T. Scott. 

 Was taken off Gibraltar, and was also found at 2 stations in the northern Indian 

 Ocean. Scott's specimens were taken in the Gulf of Guinea. 



1 L 



