NOTES ON COPEPODA FROM FIRTH OF FORTH 91 



LONGIPEDIA, ClailS. 



Longipedia coronata, Claus, Plate II., Figs. 4-6. 



1863. Longipedia coronata, Claus, "Die freilebenden 

 Copepoden," p. 1 1 o, t. xiv. 



1880. Longipedia coronata, Brady (in part), " Mon. Brit. 

 Copep," vol ii. p. 6, Plates XXXIV and XXXV. 



Female. — Secondary branch of posterior antennae nearly 

 as long as the primary branch, six-jointed, all the joints 

 rather longer than broad. Inner branches of second pair of 

 swimming-feet in both sexes conspicuously elongate, being 

 much longer than the outer branches, or fully two and a half 

 times longer. Fifth pair of feet foliaceous : those of the 

 female consist of a moderately long inner segment, obovate 

 in outline, bearing three setae of moderate length and two 

 very small ones on the outer distal margin, and one long 

 and two short terminal setae ; a long stout and curved seta 

 with a minute hair, arising from its inner aspect and near 

 the proximal end, springs from the inner part of the basal 

 joint ; this spine-like seta is distinctly articulated to the 

 basal joint. The rounded posterior dorsal margin of the last 

 abdominal segment bears three spiniform processes, the central 

 one large and easily observed, the lateral ones smaller. The 

 postero-lateral angles of the cephalo-thoracic and abdominal 

 segments acutely angular. Caudal stylets short, slightly 

 divaricate. Length, 1-5 mm. (^yth of an inch). One 

 ovisac. 



One of the most prominent characters of this species, and 

 one by which it is readily distinguished, is the very long 

 inner branches of the second pair of swimming-feet. 



Longipedia coronata is common all over the Forth, and 

 especially so off Musselburgh. 



CANUELLA, 1 gen. nov., provisional name. 



Longipedia, Brady (in part). 



Anterior antennae less robust and less plumose than 

 those of Longipedia coronata, five -jointed, first and second 



1 So named by us in compliment to Dr, Eugene Cann, author of "] 

 Copepodes du Bpulonnais." 



