The Voyage of H M S "Challenger," 



Pycno^onida PI XV 



1-7 NYMPHON MACRONYX, GO Sars 8-0 N, LON G I COX A, Hoek. 10 N. CO MPACTUM, Hoek II N. LON G I C O LLUM, Hoek 

 12-13 N. BREVICOLLUM. Hoek U-13 ASCORHYNCHUS ORTHORHYNCHUS, Hoek IG A. GLABER, Hoek. 



