542 PYCNOGONIDA CHAP, xxi 



with, Sars' P. prodncta, a species that scarcely differs from P. brevirostris, 

 save in its greater attenuation ; the same species has also been recorded from 

 Millport and from Port Erin. 



P. spectrum, Dohrn : Plymouth (A. H. Norman). 



Besides the above, all of which are littoral or more or less 

 shallow-water species, we have another series of forms, or, to 

 speak more correctly, we have two other series of forms, from the 

 deep Atlantic waters within the British area. In the cold area 

 of the Faeroe Channel we have Boreonymphon robustum, Bell; 

 Ni/mphon elegans, Hansen ; N. sluitcri, Hoek ; N. stenocheir, 

 Norman ; Colossendeis proboscidea, Sabine ; C. angusta, Sars. In 

 the warm waters south and west of the Wyville-Thomson ridge 

 \vc have Chaetonymphon spinosissimum, Norman ; Nymphon 

 <jrarilipes, Heller (non Fabr.) ; J\ r . kirtipes, Bell ; N. longitarse, 

 Kr. ; N. macrum, Wilson ; Pallenopsis tritonis, Hoek ( = P. holti, 

 Carpenter); Anoplodactylus oculatus, Carpenter, and A. typhlops, 

 G. 0. Sars ; and to the list under this section Canon Norman 

 has lately made the very interesting addition of Paranymphon 

 spinosum, Caullery, from the Porcupine Station XVII., S.S.E. of 

 Eockall, in 1230 fathoms. Lastly, and less clearly related to 

 temperature, we have Chaetonymphon tenellum, Sars ; N. gracilipes, 

 Fabr.; N. leptocheles, Sars ; JV. v/mrn ////,':, Sars ; N. serrnf inn, Sars ; 

 ;iinl Cordyloclide malleolata, Sars. 



Of the species recorded in the above list as a whole, AnojJn- 

 dactylus virescens, Nymphon gracilc, and Pallene spectrum reacli 

 thcii- northern limit in the southern parts of our own area; 

 Ammothea echinata, Anoplodactylus petiolat-us, Pallene brevirostris. 

 .Mid Phoxichilus spinosus (or very closely related forms) range from 

 the Mediterranean to Norway, the last three also to the other 

 side; of the Atlantic; Nymphon brevirostre and N. rubrum range 

 from Britain, where they are in the main East Coast species, to 

 Norway. Of the Atlantic species, other than the Arctic ones, 

 the majority are known to extend to the New England coast. 



