332 OBSERVATIONS ON THE CHLORAEMIDAE, 



backwards. There are forty-three segments, which are quite distinct 

 behind, but in front are not to be distinguished but for the 

 bundles of setae. The latter are situated on slight transverse 

 elevations ; there are four slender dorsal setae directed forward 

 and three curved ventral seta? ; the latter first appear on the fifth 

 segment. The head-lobe is similar to that of specimen A, but its 

 extremity with the tentacles and the branchiae has been lost ; it 

 is separated into two parts by a distinct narrow annular groove. 

 The large setfe surrounding the head are twelve in number. 



The total length, inclusive of the setae, is 1 decimetre ; that of 

 the long setae 4 cm. The remnant of the head-lobe is 1 cm. in 

 length. 



II. Position and relations of Coppingeria. 



There can be no doubt of the relationship of this remarkable 

 Polychaet to the members of the family Chloraemidae, both in 

 external features, and, as will subsequently be shown, in internal 

 structure. But there can I think be little more doubt that it is 

 sufficiently far removed from its nearest relative — Stylarioides — 

 to require a distinct generic appellation. The anterior seta? 

 constitute the most striking feature ; but perhaps a more 

 important characteristic is the bifid and produced branchial 

 apparatus with its numerous branchial filaments. I propose, 

 to call the new genus Coppingeria* and the species longisetosa. 

 The characteristic features of the genus may be thus summarised: — 



Body not greatly elongated, swollen in front, composed of a 

 moderate number of segments which are not distinct except in 

 the posterior portion of the body. Parapodia not prominent, 



* After my friend Dr. R. W. Coppinger, M.D., Fleet-Surgeon, R.N., 

 surgeon of H.M.S. "Discovery," during the Arctic Expedition of 1875-6, 

 and of H.M.S. "Alert" during her southern cruise. In the account 

 which he published of the latter voyage Dr. Coppinger thus refers to the 

 worm under consideration : — "Among the Annelids was one with long 

 glassy opalescent bristles surrounding the oral aperture and projecting 

 forwards to a distance of one and a half inches from the praestomium. " — 

 (Cruise of the "Alert," p. 187.) 



