N ARR ATI YE OF THE CRUISE. 
523 
anticipated the discovery of nearly every characteristic form belonging to the group 
of animals that I have had. to examine. 
“In this order the new species amount to more than one hundred and fifty — 
about thirty in the Trichobranchiata, sixty in the Dendrobranchiata, and eighty in the 
Phyllobranchiata. But the great value of the Expedition consists not so much in the 
number of new genera and species added to our knowledge, as in the large amount of 
Fig.182. -Polycheles crucifera , Sulim ; twice the natural size. From 450 fathoms, off Sombrero, Westlndies 
information which has been obtained concerning the earlier stages of many Crustaceans 
and the conditions under which they exist. 
“ The family Polychelidse bears a general appearance and close anatomical relation 
to that of the fossil Eryon from the lithographic limestones of Bavaria and the 
Lias of England. Polycheles, Willemoesia, and their congeners are inhabitants of the 
deepest parts of the ocean that have been explored with the dredge or trawl, and I believe 
